{"id":16381,"date":"2026-03-13T11:08:35","date_gmt":"2026-03-13T11:08:35","guid":{"rendered":"http:\/\/quartz-grinding.com\/?p=16381"},"modified":"2026-03-13T11:08:40","modified_gmt":"2026-03-13T11:08:40","slug":"silica-filler-particle-size-control-for-emc-and-pcb-what-the-specification-numbers-actually-mean-and-why-they-matter","status":"publish","type":"post","link":"https:\/\/www.quartz-grinding.com\/ko\/silica-filler-particle-size-control-for-emc-and-pcb-what-the-specification-numbers-actually-mean-and-why-they-matter\/","title":{"rendered":"EMC \ubc0f PCB\uc6a9 \uc2e4\ub9ac\uce74 \ucda9\uc804\uc7ac \uc785\uc790 \ud06c\uae30 \uc81c\uc5b4: \uaddc\uaca9 \uc218\uce58\uc758 \uc2e4\uc81c \uc758\ubbf8\uc640 \uc911\uc694\uc131"},"content":{"rendered":"<p>\ubc18\ub3c4\uccb4 \ud328\ud0a4\uc9d5 \uc5d4\uc9c0\ub2c8\uc5b4\uac00 EMC \uc2e4\ub9ac\uce74 \ud544\ub7ec\uc5d0 \ub300\ud574 D50 \uac12\uc744 5\ubbf8\ud06c\ub860, D98 \uac12\uc744 15\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc73c\ub85c \uc9c0\uc815\ud558\ub294 \uac83\uc740 \uacb0\ucf54 \ubcf4\uc218\uc801\uc778 \uae30\uc900\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uc774 \uc218\uce58\ub294 \ubbf8\uc138 \ud53c\uce58 \uce90\ube44\ud2f0\uc5d0 \uc548\uc815\uc801\uc73c\ub85c \uc8fc\uc785\ub418\ub294 \ubab0\ub529 \ucef4\ud30c\uc6b4\ub4dc\uc640 \uc1fc\ud2b8\uc0f7, \uc640\uc774\uc5b4 \uc2a4\uc715, \ud604\uc7a5 \ubd88\ub7c9 \ub4f1\uc744 \uc720\ubc1c\ud558\ub294 \ubab0\ub529 \ucef4\ud30c\uc6b4\ub4dc\ub97c \uad6c\ubd84\ud558\ub294 \uc815\ud655\ud55c \uc784\uacc4\uac12\uc785\ub2c8\ub2e4. PCB \ub77c\ubbf8\ub124\uc774\ud2b8\uc5d0\ub3c4 \ub3d9\uc77c\ud558\uac8c \uc801\uc6a9\ub429\ub2c8\ub2e4. \ud06c\uae30\uac00 \ud070 \uc2e4\ub9ac\uce74 \uc785\uc790 \ud558\ub098\ub9cc\uc73c\ub85c\ub3c4 \ub808\uc9c4-\ud544\ub7ec \uacc4\uba74\uc5d0 \uacf5\uadf9\uc774 \uc0dd\uaca8 28GHz\uc5d0\uc11c \uc791\ub3d9\ud558\ub294 5G \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc2e0\ud638 \ubb34\uacb0\uc131\uc744 \uc800\ud574\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc6a9\uc735 \uc2e4\ub9ac\uce74 \ud544\ub7ec\uc758 \uc785\uc790 \ud06c\uae30(PSD)\ub97c \uc5c4\uaca9\ud558\uac8c \uc81c\uc5b4\ud558\ub294 \uac83\uc740 \ud488\uc9c8 \ubcf4\uc99d \ucc28\uc6d0\uc758 \ubb38\uc81c\uac00 \uc544\ub2c8\ub77c \uae30\ub2a5\uc801 \ud544\uc218 \uc694\uac74\uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 PSD \uc81c\uc5b4\uac00 \uc81c\ub300\ub85c \ub418\uc9c0 \uc54a\uc744 \uacbd\uc6b0 \ubc1c\uc0dd\ud558\ub294 \uc138 \uac00\uc9c0 \uad6c\uccb4\uc801\uc778 \ubd88\ub7c9 \uc0ac\ub840, \uc2e4\ub9ac\uce74 \ud544\ub7ec\uc758 PSD\ub97c \uc815\ud655\ud558\uac8c \uc77d\uace0 \uc0ac\uc591\uc744 \uc815\ud558\ub294 \ubc29\ubc95, \uadf8\ub9ac\uace0 \ub113\uc740 \ubd84\ud3ec\uc640 \uc881\uc740 \ubd84\ud3ec\ub97c \uad6c\ud604\ud558\ub294 \ub370 \uc911\uc694\ud55c \uacf5\uc815 \ub2e8\uacc4\uc5d0 \ub300\ud574 \uc124\uba85\ud569\ub2c8\ub2e4.<br>EPIC Powder Machinery\ub294 EMC \ubc0f PCB \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc804\uc790 \ub4f1\uae09 \uc6a9\uc735 \uc2e4\ub9ac\uce74 \ubc0f \uc11d\uc601 \ubd84\ub9d0\uc744 \uacf5\uae09\ud558\uba70, \ubaa8\ub4e0 \uc0dd\uc0b0 \uacf5\uc815\uc5d0 \ub300\ud55c \uc2e4\uc2dc\uac04 \ub808\uc774\uc800 \ud68c\uc808 \ubaa8\ub2c8\ud130\ub9c1\uacfc \ubaa8\ub4e0 \ucd9c\ud558\ubb3c\uc5d0 \ub300\ud55c \uc804\uccb4 \ubd84\uc11d \uc778\uc99d\uc11c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"612\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide.png\" alt=\"\uc774\uc0b0\ud654\uaddc\uc18c\" class=\"wp-image-16032\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide.png 1000w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide-300x184.png 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide-768x470.png 768w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide-18x12.png 18w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Silicon-dioxide-600x367.png 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">\uc774\uc0b0\ud654\uaddc\uc18c<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">&#039;\uc5c4\uaca9\ud55c \uc785\uc790 \ud06c\uae30 \uc81c\uc5b4&#039;\uac00 \uc2e4\uc81c\ub85c \uc758\ubbf8\ud558\ub294 \ubc14\ub294 \ubb34\uc5c7\uc77c\uae4c\uc694?<\/h2>\n\n\n\n<p>\uc2e4\ub9ac\uce74 \ud544\ub7ec\uc758 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\ub294 \ucd5c\uc18c \uc138 \uac00\uc9c0 \uc22b\uc790\ub85c \uc815\uc758\ub429\ub2c8\ub2e4. D50(\uc911\uac04 \ud06c\uae30), D90 \ub610\ub294 D98(\ubd84\ud3ec\uc758 \uad75\uc740 \uc785\uc790 \ubd80\ubd84), \uadf8\ub9ac\uace0 \uacbd\uc6b0\uc5d0 \ub530\ub77c D10(\uac00\ub294 \uc785\uc790 \ubd80\ubd84)\uc774 \uadf8\uac83\uc785\ub2c8\ub2e4. \uac01 \uc22b\uc790\ub294 \uc81c\ud615\uc758 \ud2b9\uc131\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>PSD \ud30c\ub77c\ubbf8\ud130<\/strong><\/td><td><strong>\uce21\uc815 \ud56d\ubaa9<\/strong><\/td><td><strong>EMC\/PCB\uc5d0\uc11c IT\uac00 \uc81c\uc5b4\ud558\ub294 \uae30\ub2a5\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/strong><\/td><td><strong>\uc77c\ubc18\uc801\uc778 \ubaa9\ud45c \ubc94\uc704<\/strong><\/td><\/tr><tr><td>\ub51410<\/td><td>10%\uc758 \uc785\uc790\ub294 \uc774 \ud06c\uae30\ubcf4\ub2e4 \ub354 \ubbf8\uc138\ud569\ub2c8\ub2e4.<\/td><td>\ucd5c\uc18c \ucda9\uc804\uc7ac \ud06c\uae30 - \ubbf8\uc138 \uc785\uc790\uac00 \uacfc\ub3c4\ud558\uba74 \ud45c\uba74\uc801\uc774 \uc99d\uac00\ud558\uc5ec \uc810\ub3c4\uac00 \ub192\uc544\uc9d1\ub2c8\ub2e4.<\/td><td>0.5~2 \ub9c8\uc774\ud06c\ub860 (\uc6a9\ub3c4\uc5d0 \ub530\ub77c \ub2e4\ub984)<\/td><\/tr><tr><td>\ub51450<\/td><td>\uc911\uac04 \uc785\uc790 \ud06c\uae30<\/td><td>\ucda9\uc804 \ubc00\ub3c4 \ubc0f \uae30\uc900 \uc810\ub3c4<\/td><td>\ud45c\uc900 EMC\uc758 \uacbd\uc6b0 3~10 \ub9c8\uc774\ud06c\ub860, \uace0\uae09 \ud328\ud0a4\uc9c0\uc758 \uacbd\uc6b0 1~5 \ub9c8\uc774\ud06c\ub860\uc785\ub2c8\ub2e4.<\/td><\/tr><tr><td>\ub51490<\/td><td>90%\uc758 \uc785\uc790\ub294 \uc774\uac83\ubcf4\ub2e4 \ub354 \ubbf8\uc138\ud569\ub2c8\ub2e4.<\/td><td>\uc911\uac04 \uc870\ub300 \uc785\uc790 \uc81c\uc5b4<\/td><td>\uae08\ud615 \ud615\uc0c1\uc5d0 \ub530\ub77c 15~30 \ub9c8\uc774\ud06c\ub860<\/td><\/tr><tr><td>\ub51498 \/ \ub51499<\/td><td>98-99% \uc785\uc790\ub294 \uc774\ubcf4\ub2e4 \ub354 \ubbf8\uc138\ud569\ub2c8\ub2e4.<\/td><td>\ucd5c\ub300 \uc785\uc790 \ud06c\uae30\uc5d0 \uadfc\uc811\ud55c \uc785\uc790 \uc81c\uc5b4 \u2014 \uce58\uba85\uc801\uc778 \uc785\uc790 \uc81c\uc5b4<\/td><td>\ud45c\uc900 \uaddc\uaca9\uc740 20\ubbf8\ud06c\ub860 \ubbf8\ub9cc, \uace0\uae09 \ud328\ud0a4\uc9c0\uc758 \uacbd\uc6b0 10\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc785\ub2c8\ub2e4.<\/td><\/tr><tr><td>\ub514\ub9e5\uc2a4 \/ \ub514100<\/td><td>\uc874\uc7ac\ud558\ub294 \uc808\ub300 \ucd5c\ub300 \uc785\uc790 \ud06c\uae30<\/td><td>\uc5c4\uaca9\ud55c \ud55c\uacc4 \u2014 \uc774 \uac12\ubcf4\ub2e4 \ud070 \uc785\uc790\ub294 \uc5c6\uc2b5\ub2c8\ub2e4.<\/td><td>45\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc740 \ud45c\uc900, 25\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc740 \ubbf8\uc138 \ud53c\uce58, 15\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc740 \ucd08\ubbf8\uc138 \ud53c\uce58\uc785\ub2c8\ub2e4.<\/td><\/tr><tr><td>\uc2a4\ud32c = (D90-D10)\/D50<\/td><td>\ubd84\ud3ec\uc758 \ud3ed<\/td><td>\ubd84\ud3ec \uade0\uc77c\uc131 \u2014 \ubc94\uc704\uac00 \uc791\uc744\uc218\ub85d \ubd84\ud3ec\uac00 \ub354 \ucd18\ucd18\ud574\uc9d1\ub2c8\ub2e4.<\/td><td>\ud45c\uc900 EMC\uc758 \uacbd\uc6b0 2.0 \ubbf8\ub9cc, \uace0\ubc00\ub3c4 \ud328\ud0a4\uc9d5\uc758 \uacbd\uc6b0 1.2 \ubbf8\ub9cc<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\uac00\uc7a5 \ud754\ud788 \uc798\ubabb \uc9c0\uc815\ub418\ub294 \ub9e4\uac1c\ubcc0\uc218\ub294 Dmax, \uc989 \uc808\ub300 \ucd5c\ub300 \uc785\uc790 \ud06c\uae30\uc785\ub2c8\ub2e4. D90\uacfc D98\uc740 \ud1b5\uacc4\uc801 \uce21\uc815\uac12\uc73c\ub85c, \uc785\uc790\uc758 90% \ub610\ub294 98%\uc5d0 \ub300\ud55c \uc815\ubcf4\ub97c \uc81c\uacf5\ud558\uc9c0\ub9cc, \uadf8\ubcf4\ub2e4 \ud070 \ub098\uba38\uc9c0 2%\uc5d0 \ub300\ud574\uc11c\ub294 \uc544\ubb34\ub7f0 \uc815\ubcf4\ub97c \uc81c\uacf5\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. EMC \ubc0f PCB \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c\ub294 \ubc14\ub85c \uc774 2% \ud06c\uae30\uc758 \uc785\uc790\uc5d0\uc11c \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. D98\uc774 18\ubbf8\ud06c\ub860\uc778 \uc2e4\ub9ac\uce74 \ud544\ub7ec\ub77c\ub3c4 Dmax\ub97c \ubcc4\ub3c4\ub85c \uc9c0\uc815\ud558\uace0 \uad00\ub9ac\ud558\uc9c0 \uc54a\uc73c\uba74 50~80\ubbf8\ud06c\ub860 \ud06c\uae30\uc758 \uc785\uc790\uac00 \ud3ec\ud568\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. D98\uacfc Dmax\ub97c \ubcc4\ub3c4\uc758 \uac12\uc73c\ub85c \uc9c0\uc815\ud558\uba74 \uc774\ub7ec\ud55c \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PSD \uc81c\uc5b4\uac00 \ubd80\uc2e4\ud560 \uacbd\uc6b0 \ubc1c\uc0dd\ud558\ub294 \uc138 \uac00\uc9c0 \uc2e4\ud328 \ubaa8\ub4dc<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \uc810\ub3c4 \uae09\uc99d \ubc0f \uc20f\uc0f7(\ubbf8\uc138\uc785\uc790 \ubb38\uc81c)<\/h3>\n\n\n\n<p>\uc2e4\ub9ac\uce74 \ud544\ub7ec\uc5d0 \ucd08\ubbf8\uc138 \uc785\uc790\uac00 \ub108\ubb34 \ub9ce\uac70\ub098(D10\uc774 0.3\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc774\uac70\ub098 \ubd84\ud3ec\uc5d0 \ubbf8\uc138 \uc785\uc790 \uaf2c\ub9ac\uac00 \uae38\uac8c \ub098\ud0c0\ub098\ub294 \uacbd\uc6b0) \ud544\ub7ec\uc758 \ucd1d \ud45c\uba74\uc801\uc774 \uae09\uaca9\ud788 \uc99d\uac00\ud569\ub2c8\ub2e4. \uc218\uc9c0\ub294 \ud544\ub7ec \ud45c\uba74\uc744 \uc801\uc2dc\uae30 \ub54c\ubb38\uc5d0 \ud45c\uba74\uc801\uc774 \uc99d\uac00\ud558\uba74 \uc785\uc790\ub97c \ud604\ud0c1\uc2dc\ud0a4\uace0 \uc724\ud65c\ud558\ub294 \ub370 \ub354 \ub9ce\uc740 \uc218\uc9c0\uac00 \uc18c\ubaa8\ub429\ub2c8\ub2e4. \uadf8 \uacb0\uacfc \uc810\ub3c4\uac00 \uc2ec\uac01\ud558\uac8c \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub3d9\uc77c\ud55c \ud568\ub7c9\uc5d0\uc11c D10\uc774 1\ubbf8\ud06c\ub860\uc5d0\uc11c 0.3\ubbf8\ud06c\ub860\uc73c\ub85c \ubcc0\ud558\uba74 EMC \ucef4\ud30c\uc6b4\ub4dc\uc758 \uc810\ub3c4\uac00 40~60T\uae4c\uc9c0 \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ud45c\uc900 \ud2b8\ub79c\uc2a4\ud37c \ubab0\ub529 \uc628\ub3c4\uc5d0\uc11c, \uc774\ub7ec\ud55c \ub192\uc740 \uc810\ub3c4\ub294 \ucef4\ud30c\uc6b4\ub4dc\uac00 \uac94\ud654\ub418\uae30 \uc2dc\uc791\ud558\uae30 \uc804\uc5d0 \ubbf8\uc138 \ud53c\uce58 \uae08\ud615 \uce90\ube44\ud2f0\uc5d0 \uc644\uc804\ud788 \uce68\ud22c\ud558\uc9c0 \ubabb\ud558\uac8c \ud569\ub2c8\ub2e4. \uadf8 \uacb0\uacfc, \ubd88\uc644\uc804\ud55c \ucda9\uc9c4(\uc20f\uc0f7)\uc774 \ubc1c\uc0dd\ud558\uc5ec \uc644\uc81c\ud488\uc5d0 \uae30\ud3ec\uac00 \uc0dd\uae41\ub2c8\ub2e4. \uc2e4\ub9ac\uce74 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\uc758 \ubbf8\uc138\ud55c \uaf2c\ub9ac \ubd80\ubd84\uc744 \uc81c\uc5b4\ud558\uc9c0 \ubabb\ud55c EMC \ub77c\uc778\uc5d0\uc11c\ub294 5-15%\uc758 \uc20f\uc0f7\ub960\uc774 \ud754\ud788 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ud574\uacb0\ucc45\uc740 D10\uc744 \uc81c\uc5b4\ud558\uace0 \ubbf8\uc138 \uc785\uc790 \ube44\uc728(1\ubbf8\ud06c\ub860 \ubbf8\ub9cc \ubb3c\uc9c8\uc758 \ube44\uc728)\uc5d0 \uc0c1\ud55c\uc120\uc744 \uc124\uc815\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub97c \uc704\ud574\uc11c\ub294 \uc81c\ud488\uc5d0\uc11c \ucd08\ubbf8\uc138 \uc785\uc790\ub97c \uc81c\uac70\ud558\ub294 \ub2e4\ub2e8\uacc4 \ubd84\ub958 \uacf5\uc815\uc774\ub098, \uc560\ucd08\uc5d0 \ucd08\ubbf8\uc138 \uc785\uc790\uac00 \uc0dd\uc131\ub418\uc9c0 \uc54a\ub3c4\ub85d \ud558\ub294 \ubd84\uc1c4 \uacf5\uc815\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \uc640\uc774\uc5b4 \uc2a4\uc715 \ubc0f \ubc15\ub9ac(\uad75\uc740 \uc785\uc790 \ubb38\uc81c)<\/h3>\n\n\n\n<p>\uc785\uc790 \ud06c\uae30\uac00 \ud070 \uacbd\uc6b0, \ub450 \uac00\uc9c0 \ubd84\uba85\ud55c \uace0\uc7a5 \ubaa8\ub4dc\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uccab \ubc88\uc9f8\ub294 \uc640\uc774\uc5b4 \uc2a4\uc715\uc785\ub2c8\ub2e4. \ud2b8\ub79c\uc2a4\ud37c \ubab0\ub529 \uacfc\uc815\uc5d0\uc11c \ud750\ub974\ub294 EMC \ucef4\ud30c\uc6b4\ub4dc\uac00 \ub2e4\uc774\uc640 \ud328\ud0a4\uc9c0 \uae30\ud310\uc744 \uc5f0\uacb0\ud558\ub294 \ubbf8\uc138 \uc640\uc774\uc5b4 \ubcf8\ub4dc\uc5d0 \uc720\uc555\ub825\uc744 \uac00\ud569\ub2c8\ub2e4. \ud06c\uace0 \ub2e8\ub2e8\ud55c \uc2e4\ub9ac\uce74 \uc785\uc790(\uc608: D90=30\ubbf8\ud06c\ub860\uc73c\ub85c \uc9c0\uc815\ub41c \ucef4\ud30c\uc6b4\ub4dc\uc5d0\uc11c 80\ubbf8\ud06c\ub860)\ub294 \ucef4\ud30c\uc6b4\ub4dc\uac00 \ud750\ub97c \ub54c 20\ubbf8\ud06c\ub860 \uae08 \uc640\uc774\uc5b4 \ubcf8\ub4dc\ub97c \ubb3c\ub9ac\uc801\uc73c\ub85c \ud718\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc640\uc774\uc5b4 \uc9c1\uacbd\uc774 5~10%\ub97c \ucd08\uacfc\ud558\ub294 \uacbd\uc6b0 \uc640\uc774\uc5b4 \uc2a4\uc715\uc740 \uc2e0\ub8b0\uc131 \uc800\ud558\ub97c \ucd08\ub798\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ub450 \ubc88\uc9f8 \uace0\uc7a5 \ubaa8\ub4dc\ub294 \ubc15\ub9ac\uc785\ub2c8\ub2e4. \ud070 \uc785\uc790\ub294 \uacbd\ud654\ub41c \ubcf5\ud569\uc7ac\uc5d0 \uc751\ub825\uc744 \uc9d1\uc911\uc2dc\ud0b5\ub2c8\ub2e4. \ud328\ud0a4\uc9c0\uac00 \uc5f4 \uc21c\ud658(\uc608: \uc790\ub3d9\ucc28 \uc778\uc99d \uacfc\uc815\uc5d0\uc11c -55\u00b0C\uc5d0\uc11c +125\u00b0C\uae4c\uc9c0)\uc744 \uac70\uce58\uba74 \ud070 \uc785\uc790 \uc8fc\ubcc0\uc758 \uc751\ub825 \uc9d1\uc911\uc774 \uc218\uc9c0-\ud544\ub7ec \uacc4\uba74\uc758 \uc811\ucc29 \uac15\ub3c4\ub97c \ucd08\uacfc\ud558\uac8c \ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc785\uc790\uc5d0\uc11c \uade0\uc5f4\uc774 \uc2dc\uc791\ub418\uc5b4 \uc804\ud30c\ub418\uba74\uc11c \uacb0\uad6d EMC\uc640 \ub2e4\uc774 \uc811\ucc29\uce35 \ub610\ub294 \uae30\ud310 \uc0ac\uc774\uc5d0 \ubc15\ub9ac\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ub450 \uac00\uc9c0 \ubb38\uc81c \ubaa8\ub450 D90\uc774\ub098 D98\ub9cc\uc774 \uc544\ub2c8\ub77c \uc5c4\uaca9\ud55c Dmax \uc81c\uc5b4\ub97c \ud1b5\ud574 \uc608\ubc29\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc801\uc808\ud55c \ud06c\uae30\uc758 \uc9c4\ub3d9\uccb4\uc640 \ubaa9\ud45c Dmax \uc774\uc0c1\uc758 \ubb3c\uc9c8\uc744 \uc81c\uac70\ud558\ub294 \ud558\ub958 \uacf5\uae30 \ubd84\ub958 \ub2e8\uacc4\ub97c \ud1b5\ud574 \ud544\uc694\ud55c \uc5c4\uaca9\ud55c \uc0c1\ud55c\uac12\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \uc5f4\ud33d\ucc3d \uacc4\uc218 \ubd88\uc77c\uce58 \ubc0f PCB \ud71c \ud604\uc0c1(\uade0\uc77c\uc131 \ubb38\uc81c)<\/h3>\n\n\n\n<p>\uc2e4\ub9ac\ucf58\uc758 \uc5f4\ud33d\ucc3d \uacc4\uc218(CTE)\ub294 \uc57d 3ppm\/\u00b0C\uc785\ub2c8\ub2e4. FR-4 \uc720\ub9ac-\uc5d0\ud3ed\uc2dc PCB \uae30\ud310\uc758 CTE\ub294 \uc57d 14~17ppm\/\u00b0C\uc785\ub2c8\ub2e4. PCB \ub77c\ubbf8\ub124\uc774\ud2b8\uc5d0 \uc2e4\ub9ac\uce74 \ud544\ub7ec\ub97c \ucca8\uac00\ud558\ub294 \ubaa9\uc801\uc740 \uc774\ub7ec\ud55c \ucc28\uc774\ub97c \ud574\uc18c\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \ud544\ub7ec\ub294 \ubcf5\ud569\uc7ac\ub8cc\uc758 CTE\ub97c \uc2e4\ub9ac\ucf58 \uac12\uc5d0 \uac00\uae5d\uac8c \ub0ae\ucdb0 \uc5f4 \uc21c\ud658 \uacfc\uc815\uc5d0\uc11c \uc194\ub354 \uc811\ud569\ubd80\uc5d0 \uac00\ud574\uc9c0\ub294 \uc2a4\ud2b8\ub808\uc2a4\ub97c \uc904\uc5ec\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774 CTE \uac10\uc18c\ub294 \ud544\ub7ec \ud568\ub7c9\uc5d0 \ube44\ub840\ud569\ub2c8\ub2e4. \ud568\ub7c9\uc774 \ub192\uc744\uc218\ub85d \ubcf5\ud569\uc7ac\uc758 CTE\uac00 \ub0ae\uc544\uc9c0\uace0, \uc2e4\ub9ac\ucf58\uacfc\uc758 CTE \uc77c\uce58\ub3c4\uac00 \ud5a5\uc0c1\ub418\uc5b4 \uc194\ub354 \uc811\ud569 \uc218\uba85\uc774 \uc5f0\uc7a5\ub429\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ub192\uc740 \ud568\ub7c9\uc740 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\uac00 \ud5c8\uc6a9\ud558\ub294 \uacbd\uc6b0\uc5d0\ub9cc \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4. \ub113\uace0 \uc81c\uc5b4\uac00 \uc81c\ub300\ub85c \ub418\uc9c0 \uc54a\uc740 PSD\ub294 \ube44\ud6a8\uc728\uc801\uc778 \uc785\uc790 \ucda9\uc9c4\uc744 \ucd08\ub798\ud569\ub2c8\ub2e4. \uc989, \ud070 \uc785\uc790\uac00 \uc791\uc740 \uc785\uc790\ub85c \ucc44\uc6cc\uc9c0\uc9c0 \uc54a\ub294 \uacf5\uadf9\uc744 \uc0dd\uc131\ud558\ub294\ub370, \uc774\ub294 \uc785\uc790 \ud06c\uae30 \ube44\uc728\uc774 \ub9de\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ucd5c\ub300 \ub2ec\uc131 \uac00\ub2a5\ud55c \ud568\ub7c9\uc740 85-90%(\ubc00\uc9d1\ub41c \uc774\uc911 \ubaa8\ub4dc PSD)\uc5d0\uc11c 65-75%(\ub113\uace0 \uc81c\uc5b4\ub418\uc9c0 \uc54a\uc740 PSD)\ub85c \uac10\uc18c\ud558\uba70, \uc774\uc5d0 \ub530\ub77c CTE \uac10\uc18c \ud6a8\uacfc\ub3c4 \uac10\uc18c\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uadf8 \uacb0\uacfc, \uc124\uacc4\ub41c \uc5f4\ud33d\ucc3d \uacc4\uc218(CTE)\ubcf4\ub2e4 \ub192\uc740 PCB \ub77c\ubbf8\ub124\uc774\ud2b8\uac00 \uc0dd\uc131\ub418\uba70, \uc774\ub294 \ub9ac\ud50c\ub85c\uc6b0 \uc194\ub354\ub9c1 \uc911 \ub4a4\ud2c0\ub9bc(\ud328\ud0a4\uc9c0\uc5d0\uc11c\ub294 &#039;\ud31d\ucf58 \ud6a8\uacfc&#039;, \ubca0\uc5b4 PCB\uc5d0\uc11c\ub294 \ubcf4\ub4dc \ud728 \ud604\uc0c1)\uacfc \ud604\uc7a5 \uc0ac\uc6a9 \uc2dc \uc194\ub354 \uc811\ud569\ubd80\uc758 \uc870\uae30 \ud53c\ub85c \ud604\uc0c1\uc73c\ub85c \ub098\ud0c0\ub0a9\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\ube60\ub978 \uc0ac\uc591 \ucc38\uc870: \uc6a9\ub3c4\ubcc4 \uc2e4\ub9ac\uce74 \ucda9\uc804\uc7ac \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD) \ud45c\uc900 EMC(QFP, SOP \ud328\ud0a4\uc9c0): <\/strong><br>D50: 5-10 \ub9c8\uc774\ud06c\ub860 | D98: &lt;25 \ub9c8\uc774\ud06c\ub860 | Dmax: &lt;45 \ub9c8\uc774\ud06c\ub860 | \uc7a5\uc804 \uaddc\uaca9: 70-80%<br><strong>\ubbf8\uc138 \ud53c\uce58 EMC(BGA, \ud50c\ub9bd\uce69): <\/strong>D50: 3-6 \ub9c8\uc774\ud06c\ub860 | D98: &lt;15 \ub9c8\uc774\ud06c\ub860 | Dmax: &lt;25 \ub9c8\uc774\ud06c\ub860 | \uc7a5\uc804 \uaddc\uaca9: 75-85%<br><strong>\ucd08\uc815\ubc00 EMC(\uace0\uae09 \uc6e8\uc774\ud37c \ub808\ubca8 \ud328\ud0a4\uc9d5): <\/strong>D50: 1-3 \ub9c8\uc774\ud06c\ub860 | D98: &lt;8 \ub9c8\uc774\ud06c\ub860 | Dmax: &lt;12 \ub9c8\uc774\ud06c\ub860 | \uc801\uc7ac\ub7c9: \ucd5c\ub300 90%<br><strong>PCB \ub77c\ubbf8\ub124\uc774\ud2b8 \ud544\ub7ec(\ud45c\uc900 FR-4 \ub300\uccb4\ud488): <\/strong>D50: 5-15 \ub9c8\uc774\ud06c\ub860 | D90: &lt;35 \ub9c8\uc774\ud06c\ub860 | Dmax: &lt;50 \ub9c8\uc774\ud06c\ub860 | \uc7a5\uc804\ub7c9: 60-75%<br><strong>\uad6c\ud615 \uc0c1\ub2e8 \ucea1\uc290\ud654\uc81c: <\/strong>D50: 3-8 \ub9c8\uc774\ud06c\ub860 | D98: &lt;20 \ub9c8\uc774\ud06c\ub860 | \uc810\ub3c4 \uc548\uc815\uc131\uc744 \uc704\ud574\uc11c\ub294 \uc881\uc740 \ubc94\uc704(&lt;1.5)\uac00 \uc911\uc694\ud568<br><strong>\uba54\ubaa8: <\/strong>\uc0ac\uc591\uc740 \ud328\ud0a4\uc9c0 \ub514\uc790\uc778, \uc640\uc774\uc5b4 \ubcf8\ub529 \ud53c\uce58 \ubc0f \uc218\uc9c0 \uc2dc\uc2a4\ud15c\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4. \ub2f4\ub2f9 \ud300\uc5d0 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\uc6a9\uc735 \uc2e4\ub9ac\uce74 \uc0dd\uc0b0\uc5d0\uc11c \uc5b4\ub5bb\uac8c \uc815\ubc00\ud55c \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\ub97c \ub2ec\uc131\ud558\ub294\uac00?<\/h2>\n\n\n\n<p>\uc704\uc758 PSD \uc0ac\uc591\uc744 \ub2ec\uc131\ud558\uace0 \uc720\uc9c0\ud558\ub824\uba74 \uc0dd\uc0b0 \uacf5\uc815\uc758 \ub124 \ub2e8\uacc4\uc5d0 \uac78\uccd0 \uad00\ub9ac\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uac01 \ub2e8\uacc4\ub294 \ud488\uc9c8 \ubcf4\uc99d\uc758 \ud55c \ub2e8\uacc4\ub97c \ucd94\uac00\ud558\uc9c0\ub9cc, \uc5b4\ub290 \ud55c \ub2e8\uacc4\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \uc6d0\uc790\uc7ac \uad00\ub9ac<\/strong><strong><\/strong><\/h3>\n\n\n\n<p>\uc6a9\uc735 \uc2e4\ub9ac\uce74 \uc6d0\ub8cc\uc758 \ud488\uc9c8\uc740 \ud6c4\uc18d \uacf5\uc815\uc5d0\uc11c \ub2ec\uc131 \uac00\ub2a5\ud55c \uacb0\uacfc\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4. \uc6d0\ub8cc \ubc00\ub3c4, \uc218\ubd84 \ud568\ub7c9 \ub610\ub294 \ubd88\uc21c\ubb3c \uc218\uc900\uc774 \uc77c\uc815\ud558\uc9c0 \uc54a\uc73c\uba74 \uac00\uacf5 \uc7a5\ube44\uac00 \ucd5c\uc801 \uc791\ub3d9 \ubc94\uc704\ub97c \ubc97\uc5b4\ub098 \uc791\ub3d9\ud558\uac8c \ub418\uc5b4 \uc0dd\uc0b0\ubb3c\uc758 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\uac00 \ub113\uc5b4\uc9d1\ub2c8\ub2e4. \ub530\ub77c\uc11c \ubaa8\ub4e0 \uc6a9\uc735 \uc2e4\ub9ac\uce74 \uc6d0\ub8cc\ub294 \uc0dd\uc0b0 \uacf5\uc815\uc5d0 \ud22c\uc785\ub418\uae30 \uc804\uc5d0 SiO2 \uc21c\ub3c4(\uc804\uc790 \ub4f1\uae09\uc758 \uacbd\uc6b0 99.7% \uc774\uc0c1 \ubaa9\ud45c), \ubd80\ud53c \ubc00\ub3c4 \ubc0f \ubd84\uc1c4 \uc804 PSD\ub97c \uac80\uc0ac\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \uc815\ubc00 \ubc00\ub9c1 - \ud3d0\uc1c4\ud68c\ub85c \uc5f0\uc0ad<\/strong><strong><\/strong><\/h3>\n\n\n\n<p>\uc804\uc790 \ub4f1\uae09 \uc2e4\ub9ac\uce74\uc758 \uacbd\uc6b0, \ud3d0\uc1c4 \ud68c\ub85c \ubd84\uc1c4 \ubc29\uc2dd\uc774 \ud45c\uc900\uc785\ub2c8\ub2e4. \ubd84\uc1c4\uae30\uc640 \ubd84\ub958\uae30\ub294 \uc5f0\uc18d\uc801\uc778 \uc21c\ud658 \ubc29\uc2dd\uc73c\ub85c \uc791\ub3d9\ud569\ub2c8\ub2e4. \ubd84\uc1c4\uae30\ub294 \uc785\uc790 \ud06c\uae30\ub97c \uc904\uc774\uace0, \ubd84\ub958\uae30\ub294 \uc989\uc2dc \uc785\uc790\ub97c \ubbf8\uc138 \uc785\uc790(\uaddc\uaca9\uc5d0 \ubd80\ud569\ud558\uc5ec \ud68c\ub85c\uc5d0\uc11c \ubc30\ucd9c)\uc640 \uc870\ub300 \uc785\uc790(\ubd88\ub7c9\ud488\uc73c\ub85c \ubd84\uc1c4\uae30\ub85c \ubc18\uc1a1)\ub85c \ubd84\ub958\ud569\ub2c8\ub2e4. \uc774\ub294 \uc774\ubbf8 \ubbf8\uc138\ud55c \uc785\uc790\uc758 \uacfc\ub3c4\ud55c \ubd84\uc1c4\ub97c \ubc29\uc9c0\ud558\uace0, \uaddc\uaca9\uc5d0 \ub9de\ub294 \uc7ac\ub8cc\ub9cc \uc81c\ud488 \ud750\ub984\uc5d0 \ud3ec\ud568\ub418\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc81c\ud2b8 \ubc00\ub9c1\uc740 \ubbf8\uc138 \uc785\uc790(D50 5\ubbf8\ud06c\ub860 \ubbf8\ub9cc)\uc5d0 \uc8fc\ub85c \uc0ac\uc6a9\ub418\ub294\ub370, \uc774\ub294 \uae08\uc18d \uc624\uc5fc \uc5c6\uc774 \ub192\uc740 \uc5d0\ub108\uc9c0 \ud22c\uc785\uc73c\ub85c \uc785\uc790 \ud06c\uae30\ub97c \uc904\uc77c \uc218 \uc788\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc555\ucd95 \uacf5\uae30\ub97c \uc774\uc6a9\ud55c \ubd84\uc1c4 \uc6d0\ub9ac\ub85c \uc778\ud574 \ubd84\uc1c4\uae30\uc758 \ud45c\uba74\uc774 \uc81c\ud488\uacfc \uc9c1\uc811 \uc811\ucd09\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ubc18\uba74, \uc785\uc790\uac00 \uad75\uc740 \uc785\uc790(D50 5~15\ubbf8\ud06c\ub860)\uc758 \uacbd\uc6b0\uc5d0\ub294 \uacf5\uae30 \ubd84\ub958\uae30\uac00 \ud3ec\ud568\ub41c \ud3d0\uc1c4 \ud68c\ub85c \ubc29\uc2dd\uc758 \ubcfc \ubc00 \ub610\ub294 \ub9c1 \ub864\ub7ec \ubc00\uc774 \uc5d0\ub108\uc9c0 \ud6a8\uc728\uc774 \ub354 \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \ub2e4\ub2e8\uacc4 \uacf5\uae30 \ubd84\ub958<\/strong><strong><\/strong><\/h3>\n\n\n\n<p>\ub2e8\uc77c \ubd84\ub958 \ub2e8\uacc4\ub294 \ubbf8\uc138 \uc785\uc790\uc640 \uc870\ub300 \uc785\uc790\ub97c \ubd84\ub9ac\ud558\uc9c0\ub9cc, \uae09\uaca9\ud55c \uacc4\ub2e8\ud615 \ud568\uc218\uac00 \uc544\ub2cc \uc644\ub9cc\ud55c \uc804\ud658 \uc601\uc5ed\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4. Dmax\ub97c \uc5c4\uaca9\ud558\uac8c \uc81c\ud55c\ud574\uc57c \ud558\ub294 \uc804\uc790 \ub4f1\uae09 \uc2e4\ub9ac\uce74\uc758 \uacbd\uc6b0 \ub2e4\ub2e8\uacc4 \ubd84\ub958\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. 1\ucc28 \ubd84\ub958\uae30\ub294 D50\uc744 \uc124\uc815\ud558\uace0, 2\ucc28 \ubd84\ub958\uae30\ub294 \ud2b9\ud788 \uc870\ub300 \uc785\uc790 \uc601\uc5ed\uc744 \ub300\uc0c1\uc73c\ub85c Dmax \uc784\uacc4\uac12 \uc774\uc0c1\uc758 \ubb3c\uc9c8\uc744 \ub192\uc740 \ud6a8\uc728\ub85c \uc81c\uac70\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc218\ud3c9\ud615 \uacf5\uae30 \ubd84\ub958\uae30\ub294 \uc218\uc9c1\ud615\ubcf4\ub2e4 \uc785\uc790 \uada4\uc801\uc774 \uc218\ud3c9 \uc720\ub3d9\uc7a5\uc5d0\uc11c \ud070 \uc785\uc790\uc758 \uc911\ub825 \uce68\uac15\uc5d0 \ub35c \uc601\ud5a5\uc744 \ubc1b\uae30 \ub54c\ubb38\uc5d0 \ub354 \uc120\uba85\ud55c \ubd84\ub9ac \uc131\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uace0\uae09 EMC\uc5d0 \ud544\uc694\ud55c 15\ubbf8\ud06c\ub860 \ubbf8\ub9cc\uc758 D98 \uaddc\uaca9\uc758 \uacbd\uc6b0, \uc218\ud3c9\ud615 \ubd84\ub958\uae30 \uad6c\uc870\uac00 \ud45c\uc900\uc73c\ub85c \uc120\ud0dd\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \uc2e4\uc2dc\uac04 \ub808\uc774\uc800 \ud68c\uc808 \ubaa8\ub2c8\ud130\ub9c1<\/strong><strong><\/strong><\/h3>\n\n\n\n<p>\uc0dd\uc0b0 \uacfc\uc815\uc5d0\uc11c \ucd9c\ub825 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\ub97c \ubc30\uce58 \uc2dc\uc791 \uc2dc\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc9c0\uc18d\uc801\uc73c\ub85c \uac80\uc99d\ud574\uc57c \ud569\ub2c8\ub2e4. \uc778\ub77c\uc778 \ub808\uc774\uc800 \ud68c\uc808 \uc13c\uc11c\uac00 30~60\ucd08\ub9c8\ub2e4 \uc81c\ud488 \ud750\ub984\uc744 \uce21\uc815\ud569\ub2c8\ub2e4. D50 \uac12\uc774 \ubaa9\ud45c\uac12\uc5d0\uc11c 5% \uc774\uc0c1 \ubc97\uc5b4\ub098\uac70\ub098 D98 \uac12\uc774 \uc0c1\uc2b9 \ucd94\uc138\ub97c \ubcf4\uc774\uba74 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc791\uc5c5\uc790\uc5d0\uac8c \uacbd\uace0\ub97c \ubcf4\ub0b4 \ubd84\ub958\uae30 \ub9e4\uac1c\ubcc0\uc218\ub97c \uc989\uc2dc \uc870\uc815\ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774\ub7ec\ud55c \uc9c0\uc18d\uc801\uc778 \ubaa8\ub2c8\ud130\ub9c1\ub9cc\uc774 \uc0dd\uc0b0 \uacfc\uc815\uc758 \uccab \ubc88\uc9f8 \ubc31\uacfc \ub9c8\uc9c0\ub9c9 \ubc31\uc758 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\uac00 \ub3d9\uc77c\ud568\uc744 \ubcf4\uc7a5\ud558\ub294 \uc720\uc77c\ud55c \ubc29\ubc95\uc785\ub2c8\ub2e4. \ubc30\uce58 \uc885\ub8cc \uc2dc \uc0d8\ud50c\ub9c1(\uc0dd\uc0b0 \ud6c4 4~8\uc2dc\uac04\ub9c8\ub2e4 \uc0d8\ud50c \ud558\ub098\ub97c \ud655\uc778\ud558\ub294 \ubc29\uc2dd)\uc740 \uc7a5\uae30\uac04 \uc0dd\uc0b0 \uacfc\uc815\uc5d0\uc11c \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \ubc30\uce58 \ub0b4 \ubcc0\ub3d9\uc744 \ud30c\uc545\ud558\uc9c0 \ubabb\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">EMC \ubc0f PCB \ucda9\uc9c4\uc7ac\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uac01\ud615 \uc2e4\ub9ac\uce74\uc640 \uad6c\ud615 \uc2e4\ub9ac\uce74\uc758 \ucc28\uc774\uc810\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n\n\n\n<p>\ud544\ub7ec\uac00 \uc218\uc9c0 \uc2dc\uc2a4\ud15c \ub0b4\uc5d0\uc11c \uc791\uc6a9\ud558\ub294 \ubc29\uc2dd\uc758 \uadfc\ubcf8\uc801\uc778 \ucc28\uc774\uc5d0\uc11c \ucc28\uc774\uac00 \ub0a9\ub2c8\ub2e4. \uad6c\ud615 \uc2e4\ub9ac\uce74 \uc785\uc790\ub294 \ud654\ud569\ubb3c \ub0b4\uc5d0\uc11c \ubcfc \ubca0\uc5b4\ub9c1\ucc98\ub7fc \uc791\uc6a9\ud558\uc5ec \uc11c\ub85c \uc790\uc720\ub86d\uac8c \ud68c\uc804\ud558\ubbc0\ub85c \uc810\ub3c4\uac00 \uc791\uc5c5 \ubd88\uac00\ub2a5\ud574\uc9c8 \uc815\ub3c4\ub85c \ub192\uc544\uc9c0\uc9c0 \uc54a\uace0\ub3c4 \ub192\uc740 \ud544\ub7ec \ud568\ub7c9(\uc911\ub7c9 \uae30\uc900 \ucd5c\ub300 85~90%)\uc744 \ud5c8\uc6a9\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub192\uc740 \ud568\ub7c9 \ub355\ubd84\uc5d0 \uc2e4\ub9ac\ucf58\uacfc \ub3d9\uc77c\ud55c \uc5f4\ud33d\ucc3d \uacc4\uc218(CTE) \uac10\uc18c\ub97c \ub2ec\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n\n<p>\uad6c\ud615 \uc2e4\ub9ac\uce74\ub294 \ud654\uc5fc \uad6c\uc0c1\ud654 \ub610\ub294 \uc878-\uac94 \ud569\uc131\ubc95\uc73c\ub85c \uc0dd\uc0b0\ub418\uba70, \uac01\uc9c4 \uc2e4\ub9ac\uce74\ubcf4\ub2e4 \uac00\uaca9\uc774 \ube44\uc309\ub2c8\ub2e4. \uac01\uc9c4 \uc2e4\ub9ac\uce74\ub294 \ubd84\uc1c4 \ubc0f \uc5f0\uc0ad \uacfc\uc815\uc744 \ud1b5\ud574 \uc0dd\uc0b0\ub418\uba70, \uc774 \uacfc\uc815\uc5d0\uc11c \ubd88\uaddc\uce59\ud558\uace0 \ub4e4\ucb49\ub0a0\ucb49\ud55c \ud615\ud0dc\ub97c \uac16\uac8c \ub429\ub2c8\ub2e4. \uacbd\ud654\ub41c \ubcf5\ud569\uc7ac\ub8cc\uc5d0\uc11c \uac01\uc9c4 \uc785\uc790\ub4e4\uc774 \uc11c\ub85c \ub9de\ubb3c\ub9ac\uba74\uc11c \ud544\ub7ec\uc640 \uc218\uc9c0 \uc0ac\uc774\uc758 \uae30\uacc4\uc801 \uc811\ucc29\ub825\uc774 \ud5a5\uc0c1\ub418\uc5b4 \uad74\uace1 \uac15\ub3c4\uc640 \uade0\uc5f4 \uc800\ud56d\uc131\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ub3d9\uc77c\ud55c \ud568\ub7c9\uc5d0\uc11c \uc810\ub3c4\uac00 \uc0c1\ub2f9\ud788 \ub192\uc544\uc838 \ucca8\uac00\ud560 \uc218 \uc788\ub294 \ud544\ub7ec\uc758 \uc591\uc774 \uc81c\ud55c\ub429\ub2c8\ub2e4. \uc5f4\ud33d\ucc3d \uacc4\uc218(CTE) \uc81c\uc5b4\uac00 \uc911\uc694\ud55c \ub300\ubd80\ubd84\uc758 \ucd5c\uc2e0 EMC \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c\ub294 \uad6c\ud615 \uc2e4\ub9ac\uce74\uac00 \uae30\ubcf8\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uac01\uc9c4 \uc2e4\ub9ac\uce74\ub294 \uae30\uacc4\uc801 \uac15\ub3c4 \ub610\ub294 \ube44\uc6a9 \uc808\uac10\uc774 \uc8fc\uc694 \uace0\ub824 \uc0ac\ud56d\uc778 \uacbd\uc6b0\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">\uc2e4\ub9ac\uce74 \ud544\ub7ec\uc758 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\ub294 PCB \ub77c\ubbf8\ub124\uc774\ud2b8\uc758 \uc720\uc804 \uc0c1\uc218(Dk)\uc5d0 \uc5b4\ub5a4 \uc601\ud5a5\uc744 \ubbf8\uce60\uae4c\uc694?<\/h3>\n\n\n\n<p>PCB \ub77c\ubbf8\ub124\uc774\ud2b8\uc758 \uc720\uc804 \uc0c1\uc218(Dk)\ub294 \uad6c\uc131 \uc694\uc18c\uc758 Dk \uac12\uc758 \ubd80\ud53c \uac00\uc911 \ud3c9\uade0\uc785\ub2c8\ub2e4. \uc5d0\ud3ed\uc2dc \uc218\uc9c0(Dk \uc57d 4.0), \uc2e4\ub9ac\uce74 \ud544\ub7ec(\uc6a9\uc735 \uc2e4\ub9ac\uce74\uc758 \uacbd\uc6b0 Dk \uc57d 3.8), \uadf8\ub9ac\uace0 \uae30\ud3ec \ub610\ub294 \uacf5\uadf9(Dk = 1.0)\uc774 \uc5ec\uae30\uc5d0 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ud575\uc2ec \ubcc0\uc218\ub294 \uae30\ud3ec\uc785\ub2c8\ub2e4. \uc2e4\ub9ac\uce74 \ud544\ub7ec\uc758 \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec(PSD)\uac00 \ub113\uac70\ub098 \uc81c\ub300\ub85c \uc81c\uc5b4\ub418\uc9c0 \uc54a\uc73c\uba74 \uc785\uc790 \ucda9\uc9c4 \ud6a8\uc728\uc774 \ub5a8\uc5b4\uc838 \uc218\uc9c0-\ud544\ub7ec \uacc4\uba74\uc5d0 \uae30\ud3ec\uac00 \ud615\uc131\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ud3ec\ub294 \ubcf5\ud569\uc7ac\uc758 Dk \uac12\uc744 \uc124\uacc4 \uac12\ubcf4\ub2e4 \ub0ae\ucd94\uace0, \uacb0\uc815\uc801\uc73c\ub85c \ub85c\ud2b8 \uac04 Dk \ubcc0\ub3d9\uc744 \uc720\ubc1c\ud569\ub2c8\ub2e4. \uc774\ub294 \uae30\ud3ec \ubd84\uc728\uc774 \ubc30\uce58\ub9c8\ub2e4 \ubcc0\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc785\uc790 \ud06c\uae30 \ubd84\ud3ec\ub97c \uc5c4\uaca9\ud558\uac8c \uc81c\uc5b4\ud558\ub294 \uac83, \ud2b9\ud788 \uc785\uc790 \ucda9\uc9c4 \ubc00\ub3c4\ub97c \uc77c\uc815\ud558\uac8c \uc720\uc9c0\ud558\uae30 \uc704\ud574 \uc2a4\ud32c \uac12\uc744 \uc81c\uc5b4\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uae30\ud3ec \ubc1c\uc0dd\uc744 \ucd5c\uc18c\ud654\ud558\uace0 \ub85c\ud2b8 \uac04 Dk \uac12\uc744 \uc548\uc815\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. 28GHz \uc774\uc0c1\uc758 5G mmWave \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c Dk \ubcc0\ub3d9\uc774 \u00b10.05 \uc774\uc0c1\uc774\uba74 \uc548\ud14c\ub098 \uc18c\uc790\uc758 \ud29c\ub2dd\uc774 \ud2c0\uc5b4\uc9c0\uace0 \uc804\uae30\uc801 \uc0ac\uc591\uc744 \ucda9\uc871\ud558\uc9c0 \ubabb\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#cf2e2e\" class=\"has-inline-color\">\uc5d0\ud53d \ud30c\uc6b0\ub354<\/mark><\/h2>\n\n\n\n<p><strong><a href=\"http:\/\/quartz-grinding.com\">\uc5d0\ud53d \ud30c\uc6b0\ub354<\/a><\/strong>20\ub144 \uc774\uc0c1\uc758 \ucd08\ubbf8\uc138 \ubd84\ub9d0 \uc0b0\uc5c5 \uacbd\ud5d8\uc744 \ubc14\ud0d5\uc73c\ub85c, \ucd08\ubbf8\uc138 \ubd84\ub9d0\uc758 \ubd84\uc1c4, \uc5f0\uc0ad, \ubd84\ub958 \ubc0f \uac1c\uc9c8 \uacf5\uc815\uc5d0 \uc9d1\uc911\ud558\uc5ec \ucd08\ubbf8\uc138 \ubd84\ub9d0\uc758 \ubbf8\ub798 \ubc1c\uc804\uc744 \uc801\uadf9\uc801\uc73c\ub85c \ucd94\uc9c4\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ubb34\ub8cc \uc0c1\ub2f4 \ubc0f \ub9de\ucda4\ud615 \uc194\ub8e8\uc158\uc744 \uc6d0\ud558\uc2dc\uba74 \uc9c0\uae08 \ubc14\ub85c \uc5f0\ub77d\uc8fc\uc138\uc694! \uc800\ud76c \uc804\ubb38\uac00 \ud300\uc740 \uace0\uac1d\uc758 \ubd84\ub9d0 \uac00\uacf5 \uac00\uce58\ub97c \uadf9\ub300\ud654\ud560 \uc218 \uc788\ub3c4\ub85d \uace0\ud488\uc9c8 \uc81c\ud488\uacfc \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\uae30 \uc704\ud574 \ucd5c\uc120\uc744 \ub2e4\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc5d0\ud53d \ud30c\uc6b0\ub354 - \ubbff\uc744 \uc218 \uc788\ub294 \ubd84\ub9d0 \uac00\uacf5 \uc804\ubb38\uac00!\u00a0<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img decoding=\"async\" width=\"602\" height=\"602\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang.webp\" alt=\"\uc655 \uc528\" class=\"wp-image-16219\" style=\"width:150px;height:150px\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang.webp 602w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-300x300.webp 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-100x100.webp 100w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-12x12.webp 12w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-600x600.webp 600w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size\">\uc77d\uc5b4\uc8fc\uc154\uc11c \uac10\uc0ac\ud569\ub2c8\ub2e4. \uc81c \uae00\uc774 \ub3c4\uc6c0\uc774 \ub418\uc168\uc73c\uba74 \uc88b\uaca0\uc2b5\ub2c8\ub2e4. \uc544\ub798\uc5d0 \ub313\uae00\uc744 \ub0a8\uaca8\uc8fc\uc138\uc694. EPIC Powder \uc628\ub77c\uc778 \uace0\uac1d \ub2f4\ub2f9\uc790\uc5d0\uac8c \ubb38\uc758\ud558\uc2e4 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff6900\" class=\"has-inline-color\">\uc824\ub2e4<\/mark><\/strong> \ucd94\uac00 \ubb38\uc758\uc0ac\ud56d\uc774 \uc788\uc73c\uc2dc\uba74 \uc5f0\ub77d\uc8fc\uc138\uc694.&quot;<\/p>\n<cite>                                                                                                                                                 \u2014 <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff6900\" class=\"has-inline-color\">\uc81c\uc774\uc2a8 \uc655<\/mark><\/strong>, <em>\uc5d4\uc9c0\ub2c8\uc5b4<\/em><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f15703-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"15703\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/ko\/wp-json\/wp\/v2\/posts\/16381#wpcf7-f15703-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/ko\/wp-json\/wp\/v2\/posts\/16381#wpcf7-f15703-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"15703\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.4\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f15703-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"keen-form\">\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\ub2f9\uc2e0\uc758 \uc774\ub984*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\uadc0\ud558\uc758 \uc774\uba54\uc77c*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Pnone 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