1. Plum flower pad.

1: Ramin gyarawa yana buƙatar ba ƙarfe ba. Lokacin saida igiyar ruwa, idan mai gyara ramin rami ne mai ƙarfe, kwano zai toshe ramin yayin siyarwar sake kwarara.

2. Gyara ramukan hawa kamar yadda ake amfani da pads quincunx gabaɗaya don hawan ramin GND cibiyar sadarwa, saboda galibi ana amfani da tagulla na PCB don shimfiɗa tagulla don cibiyar sadarwar GND. Bayan an shigar da ramukan quincunx tare da abubuwan haɗin harsashi na PCB, a zahiri, GND yana da alaƙa da ƙasa. Wani lokaci, harsashin PCB yana taka rawar kariya. Tabbas, wasu basa buƙatar haɗa rami mai hawa zuwa cibiyar sadarwar GND.

3. Za a iya matse rami na dunƙule ƙarfe, wanda zai haifar da yanayin ƙasa da ƙasa ba tare da sifili ba, yana haifar da tsarin ya zama abin ban mamaki. Ramin furen plum, komai yadda damuwa ke canzawa, koyaushe na iya kiyaye dunƙule ƙasa.

2. Giciye furen fure.

Cross flower pads kuma ana kiranta thermal pads, hot air pads, da dai sauransu. Ayyukansa shine rage zafi na kushin yayin soldering, ta yadda za a hana kama-da-wane soldering ko PCB peeling lalacewa ta hanyar wuce kima zafi dissipation.

1 Lokacin da kushin ku ya kasa. Tsarin giciye na iya rage yanki na waya ta ƙasa, rage saurin watsawar zafi, da sauƙaƙe walda.

2 Lokacin da PCB ɗin ku yana buƙatar sanya injin da injin sake fitarwa, kushin ƙirar giciye na iya hana PCB peeling (saboda ana buƙatar ƙarin zafi don narkar da manna mai siyarwa)

3. Tashin hawaye

Hawaye sune haɗin kai da yawa tsakanin kushin da waya ko waya da ta hanyar. Makasudin zubar hawaye shine don gujewa wurin tuntuɓar waya da pad ko waya da kuma hanyar a lokacin da allon da'irar ya sami wani babban ƙarfi na waje. Cire haɗin, ƙari, saita hawaye kuma na iya sa allon kewayawa na PCB yayi kyau.

Aikin hawaye shi ne guje wa raguwar faɗuwar layin siginar kwatsam kuma ya haifar da tunani, wanda zai iya sa alaƙar da ke tsakanin alamar da kushin ɗin ya zama sauƙi mai sauƙi, da kuma magance matsalar cewa haɗin tsakanin kushin da alamar. sauƙi karya.

1. Lokacin saida, yana iya kare kushin da kuma gujewa faɗuwar kushin saboda yawan siyarwar.

2. Ƙarfafa amincin haɗin gwiwa (samarwa na iya guje wa m etching, fasa da lalacewa ta hanyar sabawa, da dai sauransu).

3. Smooth impedance, rage kaifi tsalle na impedance

A cikin zayyana na'ura mai da'irar, don ƙara ƙarfin kushin da kuma hana kushin da waya daga cire haɗin gwiwa yayin kera kayan aikin na'urar, yawanci ana amfani da fim ɗin jan karfe don shirya wurin sauyawa tsakanin kushin da waya. , wanda ake siffanta shi kamar tsagewar hawaye, don haka ana kiran sa Hawaye (Teardrops)

4. kayan fitarwa

Shin kun ga sauran mutanen da ke musanya wutar lantarki da gangan aka tanadar sawtooth danda tagulla a ƙarƙashin inductance gama gari? Menene takamaiman tasiri?

Ana kiran wannan haƙoran fitarwa, ratar fitarwa ko tazarar tartsatsi.

Tazarar tartsatsi wani nau'i ne na triangles tare da kusurwoyi masu kaifi suna nuna juna. Matsakaicin tazara tsakanin sawun yatsa shine mil 10 kuma mafi ƙarancin shine mil 6. Ɗayan delta yana ƙasa, ɗayan kuma an haɗa shi da layin sigina. Wannan triangle ba wani abu bane, amma an yi shi ta hanyar amfani da yadudduka na tagulla a cikin tsarin PCB. Wadannan triangles suna buƙatar saita su a saman Layer na PCB (bangaren gefen) kuma abin rufe fuska ba zai iya rufe su ba.

A cikin gwajin haɓaka ƙarfin wutar lantarki ko gwajin ESD, za a samar da babban ƙarfin lantarki a duka ƙarshen inductor na yanayin gama gari kuma za'a yi armashi. Idan yana kusa da na'urorin da ke kewaye, na'urorin da ke kewaye za su iya lalacewa. Don haka, ana iya haɗa bututun fitarwa ko varistor a layi daya don iyakance ƙarfin ƙarfinsa, ta haka yana taka rawar kashe baka.

Sakamakon sanya na'urorin kariya na walƙiya yana da kyau sosai, amma farashin yana da yawa. Wata hanya kuma ita ce ƙara fitar da haƙoran haƙora a ƙarshen biyu na inductor na gama-gari yayin ƙirar PCB, ta yadda inductor ya fitar ta hanyar tukwici guda biyu na fitarwa, guje wa fitarwa ta wasu hanyoyin, ta yadda kewaye Kuma tasirin na'urori masu zuwa baya raguwa.

Tazarar fitarwa baya buƙatar ƙarin farashi. Ana iya zana shi lokacin zana allon pcb, amma yana da mahimmanci a lura cewa irin wannan nau'in tazarar fitarwa shine tazarar fitar da iska, wanda za'a iya amfani dashi kawai a cikin yanayin da ake samar da ESD lokaci-lokaci. Idan aka yi amfani da shi a lokatai da ESD ke faruwa akai-akai, za a samar da ma'aunin carbon akan ma'aunin triangular guda biyu tsakanin ratar fitarwa saboda yawan fitarwa, wanda a ƙarshe zai haifar da ɗan gajeren kewayawa a cikin tazarar fitarwa kuma ya haifar da gajeriyar kewayawar siginar ta dindindin. layi zuwa kasa. Sakamakon gazawar tsarin.