Basic knowledge of soft Poari PCB

Ki te piki haere tonu o te whakawehenga PCB ngohengohe me te whakamahinga me te whakatairanga i te PCB ngawari ngawari, he mea noa ake te taapiri i te PCB ngohengohe, pakari ranei, i te wa e kii ana PCB, me kii e hia nga papa. Te tikanga, PCB hanga o ngohengohe kiriweti rauemi huaina PCB ngohengohe PCB ngawari ranei, PCB ngawari ngawari. It ADAPTS to the current electronic products to high-density and high reliability, miniaturization, lightweight direction development needs, but also meets the strict economic requirements and market and technical competition needs.

Abroad, soft PCB has been widely used in the early 1960s. I to maatau whenua, i tiimata te mahi me te tono i nga tau 1960. I nga tau kua taha ake nei, me te whakauru ohaoha o te ao me te taone tuwhera, me te whakauru hangarau ki te whakatairanga i tana whakamahinga kei te tipu haere tonu, ko etahi wheketere PCB pakari me te rahi te rahi e whai ana ki te hangarau ngohengohe ngawari ki tenei waa angitu, nga taputapu me nga mahi hei hanga te whakamahi i nga taputapu whakapai ake, te panoni me te urutau ngohengohe ngohengohe PCB PCB whakatipu kai ki te whakatipu hiahia. In order to further understand PCB, soft PCB process is introduced here.

I. Classification of soft PCB and its advantages and disadvantages

1. Whakarōpū PCB ngohengohe

Soft PCBS are usually classified according to the layer and structure of the conductor as follows:

1.1 Single-sided soft PCB

Ko te PCBS maeneene kotahi-taha, kotahi noa te reanga o te kaiarahi, tera pea kaore pea he paninga i runga i te mata. The insulation base material used varies with the application of the product. Commonly used insulating materials have polyester, polyimide, polytetrafluoroethylene, soft epoxy-glass cloth.

Single-sided soft PCB can be further divided into the following four categories:

1) Hononga kotahi-taha kaore he uhi hipoki

Ko te tauira waea o tenei momo PCB ngohengohe kei runga i te tihi whakarakei, a kaore i kapi te mata o te waea. Pēnei i te PCB mārō kotahi te taha. Ko enei hua te mea iti rawa ka whakamahia i nga tono kore-arohaehae, taiao hoki. The interconnection is realized by tin welding, fusion welding or pressure welding. It was often used in early telephones.

2) hononga kotahi-taha me te apa hipoki

Ki te whakataurite ki te karaehe o mua, ko tenei momo kaiarahi he kotahi noa atu paparanga paninga kei runga i te mata kia rite ki nga whakaritenga a te kaihoko. Ka taupoki ana, me whakaatu te papa, kaua e kapi i te rohe mutunga. Requirements of precision can be used in the form of clearance holes. Koinei tetahi o nga PCB ngohengohe taha kotahi e tino whakamahia ana, e whakamahia whanui ana i nga taputapu motuka me nga taputapu hiko.

3) Kaore he hononga taapiri o te papanga hipoki

Ka taea te hono i tenei momo atanga pereti honohono i mua o muri hoki o te waea. To do this, a path hole is made in the insulating substrate at the pad. This path hole may be made by punching, etching or other mechanical means at the desired position of the insulating substrate. E whakamahia ana mo nga taha e rua e piki ana nga waahanga, nga taputapu me nga tono e hiahia ana ki te hono maitai. Ko te rohe urunga kaore he raima aarai, a, ko taua waahi ka tangohia noa i te matū.

4) Nga hononga taarua-taapiri me nga papa hipoki

Ko te rereke i waenga i tenei akomanga me te akomanga o mua ko te mea he uhi hipoki kei runga. Engari he kohao whakauru ta te cladding e taea ai te whakamutu i nga taha e rua i te wa e mau tonu ana te koti. Ko enei PCBS ngohengohe e hangaia ana e nga papa e rua o nga mea kiriuhi me te kaiarahi whakarewa. It is used where the covering layer is required to be insulated from the surrounding device, and to be insulated from each other, with both the front and back ends connected.

1.2 PCB ngohengohe-takirua

PCB ngawari-takirua taha me nga papa e rua o te kaiarahi. Ko nga tono me nga painga o tenei momo PCB ngawari-takirua he rite tonu ki nga PCB ngawari kotahi-taha, me te tino painga ko te whakapiki i te waea waea ki ia waahanga waahanga. Ka taea te wehe: he kore poka konganuku me te kore e hipoki i te paparanga kia rite ki te aroaro me te kore o te poka whakarewa; B kaore he kohao konganuku ka kapi; C he kohao whakarewa, kaore he uhi hipoki; D he kohao i te waahanga me te hipoki i nga papa. Double-sided soft PCBS without overlays are rarely used.