Gutwikwa kw'ibikoresho, bizwi kandi nko kutagira umuriro, kuzimya, kurwanya umuriro, kurwanya umuriro, kurwanya umuriro, gucana no gutwikwa, ni ugusuzuma ubushobozi bw'ibikoresho byo kurwanya inkongi y'umuriro.

Icyitegererezo cyibikoresho byaka byaka hamwe numuriro wujuje ibisabwa, hanyuma urumuri rukurwaho nyuma yigihe cyagenwe.Urwego rwo gucana rusuzumwa ukurikije urwego rwo gutwika icyitegererezo.Hariho inzego eshatu.Uburyo bwa test ya horizontal yicyitegererezo igabanijwemo FH1, FH2, FH3 urwego rwa gatatu, uburyo bwikizamini cya vertical bugabanijwemo FV0, FV1, VF2.
Ikomeye Ubuyobozi bwa PCB igabanijwe mubuyobozi bwa HB na V0.

Urupapuro rwa HB rufite umuriro muke kandi rukoreshwa cyane kubibaho.Ubuyobozi bwa VO bufite umuriro mwinshi.Ikoreshwa cyane kubibaho bibiri kandi byinshi-byujuje ibyangombwa byerekana umuriro wa V-1.Ubu bwoko bwubuyobozi bwa PCB buhinduka FR-4.V-0, V-1, na V-2 ni amanota yumuriro.

Ikibaho cyumuzunguruko kigomba kuba cyaka umuriro, ntigishobora gutwikwa nubushyuhe runaka, ariko gishobora koroshya gusa.Ubushyuhe muri iki gihe bwitwa ubushyuhe bwikirahure (Tg point), kandi ako gaciro kajyanye nuburinganire bwimiterere yubuyobozi bwa PCB.

Nibihe birebire bya Tg PCB byumuzunguruko nibyiza byo gukoresha Tg PCB ndende?
Iyo ubushyuhe bwikibaho kinini cya Tg cyanditse kizamuka mukarere runaka, substrate izahinduka kuva "ikirahuri" ihinduka "reberi".Ubushyuhe muri iki gihe bwitwa ubushyuhe bwikirahure (Tg) bwibibaho.Muyandi magambo, Tg nubushyuhe bwo hejuru aho substrate ikomeza gukomera.

Ni ubuhe bwoko bwihariye bwibibaho bya PCB?
Igabanijwe nu ntera kuva hasi kugeza hejuru kuburyo bukurikira:

94HB - 94VO - 22F - CEM-1 - CEM-3 - FR-4 bisobanuwe mu buryo burambuye ku buryo bukurikira: 94HB: ikarito isanzwe, ntabwo irinda umuriro (ibikoresho byo mu rwego rwo hasi cyane, gupfa gukubita, ntibishobora gukoreshwa nk'ubuyobozi bw'amashanyarazi) 94V0: flame retardant ikarito (mold Punching) 22F: Ikibaho kimwe cya kabiri cya fiberglass ikibaho (gupfa gukubita) CEM-1: Ikibaho cya fiberglass imwe (igomba gucukurwa na mudasobwa, ntupfe gukubita) CEM-3: Ikibaho cya kabiri cya fiberglass ( usibye Ikarito yimpande ebyiri nibikoresho byo hasi-byanyuma kubibaho byimpande zombi. Ikibaho cyoroshye cyibice bibiri gishobora gukoresha ibi bikoresho, ni 5 ~ 10 yuan / metero kare ihendutse kuruta FR-4.)

FR-4: Ikibaho cya fiberglass ebyiri

Ikibaho cyumuzunguruko kigomba kuba cyaka umuriro, ntigishobora gutwikwa nubushyuhe runaka, ariko gishobora koroshya gusa.Ubushyuhe muri iki gihe bwitwa ubushyuhe bwikirahure (Tg point), kandi ako gaciro kajyanye nuburinganire bwimiterere yubuyobozi bwa PCB.

Nibihe birebire bya Tg PCB byumuzunguruko nibyiza byo gukoresha Tg PCB ndende

Iyo ubushyuhe buzamutse mukarere runaka, substrate izahinduka kuva "ikirahure" ihinduka "rubberi", kandi ubushyuhe muriki gihe bwitwa ubushyuhe bwikirahure (Tg) bwisahani.Muyandi magambo, Tg nubushyuhe bwo hejuru (° C) aho substrate ikomeza gukomera.

Nukuvuga ko ibikoresho bisanzwe bya PCB bidatanga gusa koroshya, guhindura ibintu, gushonga nibindi bintu mubushyuhe bwinshi, ariko kandi bikerekana kugabanuka gukabije mubiranga imashini n'amashanyarazi (ngira ngo ntushaka kubona ibyiciro byubuyobozi bwa PCB hanyuma urebe iki kibazo mubicuruzwa byawe.).

Isahani rusange ya Tg irenga dogere 130, Tg muremure muri rusange irenga dogere 170, naho Tg yo hagati ni dogere zirenga 150.

Mubisanzwe PCB yacapishijwe imbaho ​​hamwe na Tg ≥ 170 ° C bita imbaho ​​ndende za Tg.Mugihe Tg ya substrate yiyongera, kurwanya ubushyuhe, kurwanya ubushuhe, kurwanya imiti, gutuza nibindi biranga ikibaho cyacapwe bizanozwa kandi bitezimbere.Hejuru ya TG agaciro, niko arwanya ubushyuhe bwikibaho, cyane cyane muburyo butayobora, aho Tg yo hejuru ikoreshwa cyane.

High Tg bivuga ubushyuhe bwinshi.Hamwe niterambere ryihuse ryinganda za elegitoroniki, cyane cyane ibicuruzwa bya elegitoronike bihagarariwe na mudasobwa, iterambere ryimikorere ihanitse kandi ryinshi rirasaba ubushyuhe bwinshi bwibikoresho bya substrate ya PCB nkingwate ikomeye.Kugaragara no guteza imbere tekinoroji yo kwishyiriraho cyane ihagarariwe na SMT na CMT byatumye PCB irushaho gutandukana no gushyigikirwa nubushyuhe bukabije bw’imiterere ya substrate mubijyanye na aperture ntoya, insinga nziza, no kunanuka.

Kubwibyo, itandukaniro riri hagati ya FR-4 rusange na Tg FR-4 ndende: iri mubihe bishyushye, cyane cyane nyuma yo kwinjiza amazi.
Munsi yubushyuhe, hariho itandukaniro mumbaraga zumukanishi, gutuza kurwego, gukomera, kwinjiza amazi, kubora kwinshi, no kwagura ubushyuhe bwibikoresho.Ibicuruzwa byinshi bya Tg biragaragara ko ari byiza kuruta ibikoresho bisanzwe bya PCB.Mu myaka yashize, umubare wabakiriya basaba kubyara ibicuruzwa byinshi byanditseho Tg byiyongereye uko umwaka utashye.

Hamwe niterambere hamwe niterambere ryiterambere rya tekinoloji ya elegitoronike, ibisabwa bishya bihora bishyirwa mubikorwa byacapwe byumuzunguruko wacapwe, bityo bigateza imbere iterambere ryikomeza ryumuringa wambaye umuringa.Kugeza ubu, ibipimo ngenderwaho byibikoresho bya substrate nibi bikurikira.

Standards Ibipimo by’igihugu Kugeza ubu, igihugu cyanjye mu rwego rw’igihugu mu gushyira mu byiciro ibikoresho bya PCB ku bikoresho by’ubutaka birimo GB / T4721-47221992 na GB4723-4725-1992.Umuringa wambaye umuringa wa laminate muri Tayiwani, Ubushinwa nicyo gipimo cya CNS, gishingiye ku gipimo cy’Ubuyapani JIs., Yarekuwe mu 1983.
TherIbindi bipimo by’igihugu birimo: Ibipimo by’Ubuyapani JIS, ASTM y'Abanyamerika, NEMA, MIL, IPc, ANSI, UL ibipimo, Bs yo mu Bwongereza B, ubudage bwa DIN na VDE, Ubufaransa NFC na UTE, hamwe na CSA yo muri Kanada, AS AS muri Ositaraliya, FOCT ibipimo byahoze ari Leta Zunze Ubumwe z'Abasoviyeti, amahame mpuzamahanga ya IEC, n'ibindi.

Abatanga ibikoresho byumwimerere bya PCB nibisanzwe kandi bikoreshwa cyane: Shengyi \ Jiantao \ International, nibindi.

Inyandiko zemewe: protel autocad powerpcb orcad gerber cyangwa ikibaho nyacyo kopi, nibindi.

Type Ubwoko bwubuyobozi: CEM-1, CEM -3 FR4, ibikoresho bya TG bihanitse;

Size Ingano ntarengwa y'ubutegetsi: 600mm * 700mm (24000mil * 27500mil)

Ness Gutunganya ikibaho cyububiko: 0.4mm-4.0mm (15.75mil-157.5mil)

Inzira ntarengwa yo gutunganya: 16Abalayiki

Umuringa w'umuringa Umuringa: 0.5-4.0 (oz)

● Kurangiza kwihanganira ikibaho: +/- 0.1mm (4mil)

Gukora kwihanganira ibipimo: gusya mudasobwa: 0.15mm (6mil) Gupfa gukubita isahani: 0.10mm (4mil)

Uburebure ntarengwa bwumurongo / intera ： 0.1mm (4mil) Ubushobozi bwo kugenzura umurongo: <+ - 20%

● Ntarengwa umwobo wo gucukura umurambararo wibicuruzwa byarangiye: 0.25mm (10mil) Ntarengwa ya diameter umwobo wibicuruzwa byarangiye: 0.9mm (35mil) Kwihanganira umwobo wibicuruzwa byarangiye: PTH: + -0.075mm (3mil) NPTH : + -0.05mm (2mil)

Wall Umwobo wuzuye urukuta rw'umuringa: 18-25um (0.71-0.99mil)

Acing Umwanya muto muto wa SMT: 0.15mm (6mil)

Ating Ubuso bwo hejuru: zahabu yo kwibiza mu miti, amabati, Ikibaho cyose ni zahabu isize nikel (amazi / zahabu yoroshye), ecran ya silike yubururu, nibindi.

Enc Ubugari bwa mask ya Solder ku kibaho: 10-30 mm (0.4-1.2mil)

Strength Imbaraga zo gukuramo: 1.5N / mm (59N / mil)

● Kurwanya Solder firime ikomeye:> 5H

Ubushobozi bwo gucuruza ibyuma byububiko: 0.3-0.8mm (12mil-30mil)

Constant Dielectric ihoraho: ε = 2.1-10.0

Resistance Kurwanya insulation: 10KΩ-20MΩ

Imp Impedance iranga: 60 ohm ± 10%

Shock Ubushuhe bukabije: 288 ℃, amasegonda 10

Urupapuro rwibibaho byarangiye: <0.7%

Application Gusaba ibicuruzwa: ibikoresho byitumanaho, ibikoresho bya elegitoroniki, ibikoresho, sisitemu yumwanya wisi, mudasobwa, MP4, amashanyarazi, ibikoresho byo murugo, nibindi.

Ukurikije ibikoresho byo gushimangira ubuyobozi bwa PCB, muri rusange bigabanyijemo ubwoko bukurikira:
1. Fenolike PCB impapuro substrate
Kuberako ubu bwoko bwibibaho bya PCB bugizwe nimpapuro, impapuro zimbaho, nibindi, rimwe na rimwe biba ikarito, ikibaho cya V0, ikibaho cya flame-retardant na 94HB, nibindi. ikomatanyirijwe hamwe na fenolike resin.isahani.Ubu bwoko bwimpapuro substrate ntabwo yaka umuriro, irashobora gukubitwa, ifite igiciro gito, igiciro gito, nubucucike buke.Dukunze kubona insimburangingo ya fenolike nka XPC, FR-1, FR-2, FE-3, nibindi. Kandi 94V0 ni iy'ibipapuro byaka umuriro, bikaba bidafite umuriro.

2. Gukomatanya PCB substrate
Ubu bwoko bwifu ya poro nabwo bwitwa ikibaho cyifu, hamwe nimpapuro za fibre fibre cyangwa impapuro za fibre fibre nkibikoresho byongera imbaraga, nigitambara cyibirahure nkibikoresho byubaka hejuru icyarimwe.Ibikoresho byombi bikozwe muri flame-retardant epoxy resin.Hariho uruhande rumwe rw'ibirahuri fibre 22F, CEM-1 hamwe na kabiri-igice cya kabiri cy'ibirahure fibre fibre CEM-3, muribo CEM-1 na CEM-3 nibisanzwe bigize umuringa wambaye umuringa wambaye laminates.

3. Ikirahure fibre PCB substrate
Rimwe na rimwe, iba kandi ikibaho cya epoxy, ikibaho cya fibre fibre, FR4, fibre fibre, nibindi.Ubu bwoko bwumuzunguruko bufite ubushyuhe bwo hejuru kandi ntibwangizwa nibidukikije.Ubu bwoko bwibibaho bukoreshwa kenshi muri PCB zibiri, ariko igiciro gihenze kuruta substrate ya PCB, kandi ubunini busanzwe ni 1.6MM.Ubu bwoko bwa substrate burakwiriye kubibaho bitandukanye bitanga amashanyarazi, imbaho ​​zo murwego rwohejuru, kandi bikoreshwa cyane muri mudasobwa, ibikoresho bya peripheri, nibikoresho byitumanaho.

FR-4

4. Abandi