ʻO ka mea a mākou e ʻōlelo pinepine ai " FR-4 Fiber Papa Material PCB Papa "He inoa code no ka papa o nā mea pale ahi. Hōʻike ia i kahi kikoʻī kikoʻī e hiki i ka mea resin ke hoʻopau iā ia iho ma hope o ke puhi ʻia ʻana. ʻAʻole ia he inoa waiwai, akā he ʻano mea. he nui nā ʻano mea papa FR-4 i hoʻohana ʻia i nā papa kaapuni maʻamau i kēia manawa, akā ʻo ka hapa nui o ia mau mea i hana ʻia me ka mea i kapa ʻia ʻo Tera-Function epoxy resin me ka filler (Filler) a me ke aniani fiber ʻO ka mea i hana ʻia.
Papa kaapuni pa'i ma'alahi (Papa Kaapuni Pa'i Pa'i Pa'i Pa'i Pa'i Pa'i Pa'i Pa'i Pa'i 'ia 'o FPC 'o ia ho'i i kapa 'ia ka papa kaapuni pa'i ma'alahi.ʻO ka papa kaapuni paʻi maʻalahi kahi huahana i hoʻolālā ʻia a hana ʻia ma kahi substrate maʻalahi ma o ka paʻi ʻana. 
ʻElua mau ʻano nui o nā substrate papa kaapuni i paʻi ʻia: nā mea substrate organik a me nā mea substrate inorganic, a ʻo nā mea substrate organik ka mea i hoʻohana nui ʻia.He ʻokoʻa nā ʻāpana PCB i hoʻohana ʻia no nā papa like ʻole.No ka laʻana, 3 a 4 papa papa pono e hoʻohana i nā mea i hana mua ʻia, a ʻo nā papa ʻaoʻao ʻelua e hoʻohana nui i nā mea aniani-epoxy. Ke koho ʻana i kahi pepa, pono mākou e noʻonoʻo i ka hopena o SMT I ke kaʻina hana uila uila me ke alakaʻi ʻole, ma muli o ka piʻi ʻana o ka mahana, ua hoʻonui ʻia ke degere o ka piko o ka papa kaapuni i paʻi ʻia i ka wā wela.No laila, pono e hoʻohana i kahi papa me kahi liʻiliʻi o ka piko i SMT, e like me ka substrate type FR-4.
Ma muli o ka hoʻonui ʻana a me ke koʻikoʻi o ka substrate ma hope o ka hoʻomehana ʻana e pili ana i nā ʻāpana, e hoʻoneʻe ai ka electrode a hōʻemi i ka hilinaʻi.No laila, pono e noʻonoʻo ʻia ka coefficient hoʻonui waiwai i ke koho ʻana i ka mea, ʻoi aku ka nui o ka ʻāpana ma mua o 3.2 × 1.6mm.Pono ka PCB i hoʻohana ʻia i ka ʻenehana hui honua kiʻekiʻe, ke kūpaʻa wela maikaʻi loa (150 ℃, 60min) a me ka solderability (260 ℃, 10s), ka ikaika adhesion keleawe kiʻekiʻe (1.5 × 104Pa a i ʻole) a me ka ikaika kulou (25 × 104Pa), kiʻekiʻe conductivity a me ka liʻiliʻi dielectric mau, maikaʻi punchability (accuracy ± 0.02mm) a me ka hoʻohālikelike me ka hoʻomaʻemaʻe mea hoʻomaʻemaʻe, a me ka mea e pono ai ka helehelena e maʻemaʻe a palahalaha, me ka ʻole o ka warping, nā māwae, nā ʻōpala a me nā wahi ʻōpala, etc. 
PCB mānoanoa koho ʻO ka mānoanoa o ka papa kaapuni i pai ʻia he 0.5mm, 0.7mm, 0.8mm, 1mm, 1.5mm, 1.6mm, (1.8mm), 2.7mm, (3.0mm), 3.2mm, 4.0mm, 6.4mm, nona ka 0.7 mm a me 1.5 Hoʻohana ʻia ka PCB me ka mānoanoa o ka mm no ka hoʻolālā ʻana i nā papa ʻaoʻao ʻelua me nā manamana gula, a ʻo 1.8mm a me 3.0mm ka nui ʻole maʻamau. Mai ka hiʻohiʻona o ka hana ʻana, ʻaʻole e emi ka nui o ka papa kaapuni i paʻi ʻia ma mua o 250 × 200mm, a ʻo ka nui kūpono loa (250~350mm) × (200 × 250mm).No nā PCB me nā ʻaoʻao lōʻihi ma lalo o 125mm a i ʻole nā ʻaoʻao ākea ma lalo o 100mm, maʻalahi ka hoʻohana ʻana i ke ʻano jigsaw. ʻO ka ʻenehana mauna ili e kuhikuhi i ka nui o ka piko o ka substrate me ka mānoanoa o 1.6mm e like me ka warpage luna ≤0.5mm a me ka warpage haʻahaʻa ≤1.2mm 
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