Nigute ushobora kumenya polarite ya SMT

Nigute ushobora kumenya polarite ya SMT

Byakagombye kwitabwaho cyane kubice bya polarite mugikorwa cyose cyo gutunganya PCBA, kuko ibice biterekezo bitari byo bizatera impanuka zitsinda no gutsindwa kwoseUbuyobozi bwa PCBA.Niyo mpamvu, ni ngombwa cyane ko abubatsi cyangwa abakozi bakora kugirango basobanukirwe na SMT polarite.

1. Ibisobanuro bya polarite

Ubuharike bivuga ko ibyiza n'ibibi cyangwa pin ya mbere yibigize, hamwe nibyiza nibibi cyangwa pin ya mbere ya PCB iri mu cyerekezo kimwe.Niba icyerekezo cyibigize hamwe nubuyobozi bwa PCB bidahuye, byitwa revers mbi.

2. Uburyo bwo kumenya polarite

a.Chip résistoriste idafite polarite

b.Nigute ushobora kumenya polarisiyumu

• Nonpolarity ya ceramic capacitor

• Ubushobozi bwa Tantalum bufite polarite.Ikimenyetso cyiza cya PCB nibigize: 1) ikimenyetso cyamabara;2) ikimenyetso cya “+”;3) ikimenyetso cya diagonal

• Electrolysis na capacitance ya aluminium bifite polarite.Ikimenyetso cyibigize: ibara ryerekana ibara ryerekana nabi;Ikimenyetso cya PCB: ibara ryamabara cyangwa "+" byerekana ibyiza.

3. Nigute ushobora kumenya polarite ya inductor

Are Nta polarite isabwa kugirango ipaki ya chip coil hamwe nizindi ebyiri zo gusudira.

Ind Inductor nyinshi zifite ibisabwa bya polarite.Ikimenyetso: akadomo / “1 ″ bisobanura polarite point;Ikimenyetso cya PCB: akadomo / uruziga / “*” bisobanura ingingo ya polarite.

4. Nigute ushobora kumenya urumuri rusohora diode polarite

Surface Ubuso bwa SMT bwashyizwe kuri LED bufite polarite.Ikimenyetso kibi cyibigize: icyatsi ni kibi;Ikimenyetso kibi cya PCB: 1) umurongo uhagaze, 2) umurongo wamabara, 3) inguni ityaye ya ecran ya silk, 4) “匚” ya ecran ya silike.

5. Nigute ushobora kumenya polarite ya diode

Ÿ SMT yubuso bwa diode ifite polarite.Ikirango kibi cyibigize: 1) ibara ryamabara, 2) igikoni, 3) ibara ryerekana (ikirahure);bibi kubimenyetso bya PCB: 1) umurongo uhagaze kugirango ushire akamenyetso, 2) ibara ryerekana, 3) ecran ya silike yerekana inguni, 4) “匚” gushira akamenyetso

6. Nigute ushobora kumenya polarite ya IC (Integrated Circuit)

Pack Gupakira ubwoko bwa SOIC bufite polarite.Ikimenyetso cya polarite: 1) ibara ryamabara, 2) ikimenyetso, 3) ingingo ifatanye, groove, 4) bevel.

Ÿ Ubwoko bwa SOP cyangwa QFP bipakira bifite polarite.Ikimenyetso cya polarite: 1) guhuza / gutondeka kuranga, 2) imwe mungingo itandukanye nizindi ngingo ebyiri cyangwa eshatu (ubunini / imiterere).

Pack Ubwoko bwa QFN gupakira bifite polarite.Ubuharike bwo gushira akamenyetso: 1) ingingo imwe itandukanye nizindi ngingo ebyiri (ingano / imiterere), 2) impande zometse kumurongo, 3) ikimenyetso cyo gushiraho ikimenyetso (umurongo utambitse, “+”, akadomo)

7. Nigute ushobora kumenya (BGA) Ball Grid Array polarite

polarite yibigize: guhuza ingingo / ikimenyetso cya groove / Akadomo / umuzingi kugirango ushireho ikimenyetso;PCB polarite: umuzenguruko / Akadomo / 1 cyangwa A / diagonal kuranga.Ingingo ya polarite yibigize ihuye na polarite point kuri PCB.

. ingingo yibigize ihuye na polarite point ya PCB, impande ya bevel yibigize ihuye na PCB polarite point, uruziga rwibice bigize ibice bihuye na polarite point ya PCB, ingingo ya polarite ihuye neza, ingingo ya polarite ihuye neza ikosa, kandi icyerekezo gisubizwa inyuma)

PCBFuture irashobora gutanga ubuziranenge bwambaye ubusa bwanditseho imizunguruko kandiicapiro ryumuzungurukoku giciro gito cyane, serivisi zidasanzwe no gutanga ku gihe.Itsinda rifite uburambe burenze imyaka icumi ryateje imbere kumenyekanisha ibicuruzwa na serivisi byiza mugihe gikwiye.Niba ufite ikibazo, nyamuneka hamagarasales@pcbfuture.commu bwisanzure.