La'akari da Layout na PCB

Domin sauƙaƙe samarwa, PCB ɗinki gabaɗaya yana buƙatar tsara alamar Mark, V-slot, gefen aiwatarwa.

I. Siffar farantin rubutu

1. Firam ɗin waje na PCB splicing board (ƙwaƙwalwar gefen) yakamata a kasance da ƙira mai rufaffiyar madauki don tabbatar da cewa allon splicing na PCB ba zai zama naƙasa ba bayan an gyara shi akan na'urar.

2. PCB splice nisa ≤ 260mm (layin SIEMENS) ko ≤ 300mm (layin FUJI);idan ana buƙatar rarraba ta atomatik, PCB splice nisa x tsawon ≤ 125 mm x 180 mm.

3. PCB splicing board siffar kusa da murabba'in-wuri, shawarar 2 × 2, 3 × 3, …… splicing allon;amma kada ku yi rubutu a cikin allon yin da yang.

II.Ramin V

1. bayan bude V-slot, sauran kauri X ya zama (1/4 ~ 1/3) allon kauri L, amma m kauri X dole ne ≥ 0.4mm.Za'a iya ɗaukar madaidaicin ƙayyadaddun katako mai ɗaukar nauyi, ƙananan ƙayyadaddun ƙayyadaddun katako mai sauƙi.

2. V-slot a bangarorin biyu na babba da ƙananan notches na kuskuren S ya kamata ya zama ƙasa da 0.1mm;saboda mafi ƙarancin kauri mai inganci na ƙuntatawa, kauri na ƙasa da allon 1.2mm, bai kamata ya yi amfani da hanyar allo ta V-slot ba.

III.Alamar alama

1. Saita tunani sakawa batu, yawanci a cikin sakawa batu a kusa da barin 1.5 mm girma fiye da mara-resistant soldering yankin.

2. An yi amfani da shi don taimakawa madaidaicin matsayi na injin sanyawa yana da diagonal na na'urar guntu PCB diagonal akalla biyu asymmetric reference points, dukan PCB Tantancewar sakawa tare da tunani batu ne kullum a cikin dukan PCB diagonal m matsayi;yanki na PCB na gani na gani tare da ma'anar tunani gabaɗaya yana cikin yanki na daidaitaccen matsayi na PCB.

3. don tazarar gubar ≤ 0.5mm QFP (kunshin fakitin murabba'i) da tazarar ball ≤ 0.8mm BGA (kwallan grid array kunshin) na'urorin, don haɓaka daidaiton jeri, buƙatun IC guda biyu na diagonal saitin abubuwan tunani.

IV.Gefen tsari

1. Firam ɗin waje na allon faci da ƙaramin allo na ciki, ƙaramin allo da ƙaramin allo tsakanin ma'aunin haɗin da ke kusa da na'urar ba zai iya zama babba ko na'urori masu tasowa ba, kuma abubuwan da aka haɗa da gefen allon PCB yakamata a bar su da fiye da haka. 0.5mm na sarari don tabbatar da aikin al'ada na kayan aikin yankan.

V. ramukan sanyawa allo

1. don daidaitawar PCB na dukkan allo da kuma sanya na'urori masu kyau-pitch alamomin alamomi, bisa ka'ida, ya kamata a saita farar ƙasa da 0.65mm QFP a matsayin diagonal;Ya kamata a yi amfani da alamomin ma'auni na ƙaramin allo na PCB bibiyu, an tsara su a diagonal na abubuwan sanyawa.

2. Ya kamata a bar manyan abubuwan haɗin gwiwa tare da ginshiƙai ko sanya ramuka, mai da hankali kan irin su musaya na I / O, microphones, musaya na baturi, microswitches, musaya na lasifikan kai, injina, da sauransu.

Kyakkyawan mai tsara PCB, a cikin ƙirar ƙira, don la'akari da abubuwan samarwa, don sauƙaƙe aiki, haɓaka haɓakar samarwa da rage farashin samarwa.