Basic knowledge of soft Pcb bhodhi

Nekuenderera mberi kwekuwedzera kwehuwandu hwehuwandu hwePCB yakapfava uye iko kushandiswa uye kusimudzirwa kwePBB yakaomarara inoshanduka, zvakajairika kuwedzera yakapfava, kuomarara kana kuomarara pcb inoshanduka kana uchiti pcb, wobva wati mangani matanda ari. Kazhinji, pcb yakaitwa yakapfava insulating zvinhu inonzi yakapfava pcb kana inoshanduka pcb, yakaoma yakaoma inoshanduka pcb. 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. Munyika yedu, kugadzirwa uye kunyorera kwakatanga muma1960. Mumakore achangopfuura, pamwe nekubatana kwehupfumi hwenyika uye guta rakavhurika, uye kuunzwa kwehunyanzvi kusimudzira kushandiswa kwayo kuri kuramba kuchikura, imwe diki uye yepakati-saizi yakaoma yakaoma pcb fekitori inoitirwa zvakapfava zvakaoma ita tekinoroji pane uyu mukana, tooling uye maitiro ekugadzira kushandiswa kwezviripo kuvandudzwa kwemidziyo, shanduko uye inoshanduka yakapfava yakapfava pcb pcb yekushandisa kudyiwa kuri kukura zvido. In order to further understand PCB, soft PCB process is introduced here.

Kugadziriswa kwePBB yakapfava nezvakanakira nezvakaipira

1. Soft pcb kupatsanura

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

1.1 Single-sided soft PCB

Imwe-mativi akapfava PCBS, iine imwechete chete yakaturikidzana yekondakita, inogona kana kunge iine isina kupfeka pamusoro. The insulation base material used varies with the application of the product. Inowanzo shandiswa yekudzivirira zvinhu zvine polyester, polyimide, polytetrafluoroethylene, nyoro epoxy-girazi jira.

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

1) Kumwe-kudivi kubatana pasina kufukidza nhete

Iyo tambo pateni yerudzi urwu rwePCB yakapfava iri pane inodzivirira substrate, uye pamusoro peiyo waya haina kuvharwa. Kunge yakajairwa imwechete-mativi akaomarara PCB. Izvi zvigadzirwa ndizvo zvakachipa uye zvinowanzo shandiswa mune zvisina-kutsoropodza, zvakatipoteredza zvine ushamwari mafomu. The interconnection is realized by tin welding, fusion welding or pressure welding. Yaiwanzoshandiswa mumafoni ekutanga.

2) kubatana-kwakabatana mativi neyakafukidza dura

Inofananidzwa nekirasi yapfuura, mhando iyi yekondakita inongova neimwezve yekumhara pamusoro pechiso zvinoenderana nezvinodiwa nevatengi. Kana ichivhara, iyo pad inofanirwa kuburitswa, isingavharwe munzvimbo yekupedzisira. Requirements of precision can be used in the form of clearance holes. Iyo ndeimwe yeanonyanyo shandiswa single-mativi akapfava pcb, ayo anoshandiswa zvakanyanya mumotokari chiridzwa uye zvemagetsi chiridzwa.

3) Iko hakuna maviri-mativi kubatana kweanofukidza nhete

Rudzi urwu rwekubatanidza ndiro ndiro inogona kusunganidzwa pane ese kumberi nekumashure kwetambo. 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. Iyo inoshandiswa kumativi ese ari maviri ekumisikidza zvinhu, zvishandiso uye zvinoshandiswa zvinoda kuwina tini. Iyo yekuwanikidza pad nzvimbo haina insulating substrate uye yakadaro pad nzvimbo inowanzo kuve nemakemikari anobviswa.

4) Kaviri-mativi kubatana neanovhara matanda

Musiyano uripo pakati pekirasi iyi nekirasi yapfuura ndechekuti kune chakafukidza pamusoro. Asi kuputirwa kune maburi ekupinda ayo anotenderawo kuti igumiswe pamativi ese ari maviri ichiri kuchengetedza iyo cladding. Aya maPCBS akapfava akagadzirwa nemaviri akaturikidzana ekuisa zvinhu uye simbi conductor. 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 Double-mativi nyoro pcb

Yakapetwa-kaviri yakachinjika pcb ine maviri akaturikidzana evanofambisa. Iko kunyorera uye zvakanakira mhando iyi yeakaviri-mativi akasununguka pcb yakafanana neayo e-imwechete-mativi anochinja pcb, ine mukana wakanyanya kuve kuwedzerwa wiring density pauniti nharaunda. Inogona kuve yakakamurwa kuita: isina isina metallized gomba uye isina yekuvhara dura zvinoenderana nekuvapo uye kusavapo kwegomba resimbi; B isina metallized maburi uye akafukidzwa; C iine maburi esimbi uye isina chekufukidzira; D iine metallized maburi uye akafukidza matanda. Double-sided soft PCBS without overlays are rarely used.