Vim li cas Stencil Design thiaj tseem ceeb?
Raws li cov lus hais mus rau hauv lub zej zog tsim PCB: "Yog hais tias tus qauv stencil tsis yog, txawm tias qhov zoo tshaj plaws kev tso kawm tshuab thiab feem ntau ruaj khov reflow qhov cub yuav cawm tsis tau koj los ntawm soldering tsis xws luag."
Tej teeb meem muaj xws li
- Ntau tshaj solder paste → nws yooj yim rau bridging thiab txias solder pob qij txha.
- Tsis txaus solder paste → tsis muaj zog solder pob qij txha thiab txo kev ntseeg tau.
- Cov duab tsis zoo → tej zaum yuav ua rau muaj qhov tsis xws li "tombstoning" lossis mid-chip solder balls.
Qhov no yog vim li cas SMT Stencil Design yog thawj qhov txuas hauv SMT txheej txheem saw - ncaj qha cuam tshuam rau qhov kawg soldering zoo.
Cov ntsiab lus tseem ceeb tsim
1. Thickness Matching
Xaiv qhov tsim nyog stencil thickness raws li pob khoom thiab cov ntaub qhwv loj (feem ntau 0.10 mm–0.15 mm).
Rau cov suab zoo ICs thiab cov cuab yeej siv hluav taws xob siab, cov stencils nce qib (nce / nqis) tuaj yeem siv kom phim cov tuab hauv ntau qhov chaw.
2. Aperture Optimization
Rau cov khoom me me xws li 0402 lossis 0201, siv cov apertures txo qis lossis "hom phaj" cov duab kom txo qis qhov nruab nrab ntawm cov chip solder pob.
Rau BGAs, tswj qhov sib piv ntawm thaj tsam kom ntseeg tau tias cov tshuaj pleev xim zoo nkauj tso tawm.
3. Khoom siv thiab khoom siv tes ua
Laser txiav stainless hlau stencils yog nyiam rau cov npoo du thiab siab precision.
Rau cov kev cai tshwj xeeb, nickel alloy lossis nano txheej tuaj yeem siv los txhim kho kev tso tawm thiab txuas ntxiv lub neej stencil.
4. Zone Tsim
Rau cov laug cam sib txuas cov suab zoo ICs thiab cov ntaub qhwv loj, thaj chaw tsim kom muaj qhov zoo tshaj plaws solder paste ntim hauv txhua cheeb tsam.
Kev siv SMT Stencils hauv PCBA Txheej Txheem
- PCB tsim → Txheeb xyuas qhov chaw thiab qhov ntev.
- Stencil tsim → Qhia meej aperture duab thiab qhov ntau thiab tsawg.
- Stencil fabrication → Laser txiav los yog tshuaj etching.
- Kev npaj PCB → Ntxuav qhov chaw kom paub meej haum.
- Stencil alignment → Siv cov ntawv sau npe lossis cov fiducials kom raug qhov chaw.
- Solder paste printing → Thov muab tshuaj txhuam nrog lub squeegee rau hauv stencil apertures.
- Kev tso kawm ntawm cov khoom siv → Automated tuaj tos thiab qhov chaw ntawm SMD Cheebtsam.
- Reflow soldering → Melt solder paste rau cov pob qij txha.
- Kev tshuaj xyuas thiab kev sim → AOI, X ray, kev kuaj ua haujlwm.
STHL's Stencil Design Advantages
Cov ntsiab lus
Xaiv SMT Stencil Design txhais tau hais tias ua tus thawj coj hauv kev ua haujlwm zoo thiab kev tsim khoom. Shenzhen STHL Technology Co., Ltd. muab kev nplua nuj Solder Paste Stencil Design project kev paub, kev tsim khoom siab heev, thiab kev tswj xyuas kom zoo los muab kev txhawb nqa ib leeg - los ntawm Stencil Tsim rau SMT kom tiav cov khoom xa tuaj.
Peb lav tias txhua tus pcb stencil tsim tau raug xam thiab txheeb xyuas kom ntseeg tau tias qhov zoo tshaj plaws solder paste ntim, zoo li, thiab qhov chaw tso - txo qis rework, txo nqi, thiab txhim kho kev xa khoom ruaj khov.
Tiv tauj peb tam sim no:info@pcba-china.com- Yeej ntawm txoj kab pib ntawm txhua qhov txheej txheem soldering nrog SMT Stencil Design.
Cim npe nrov: Tuam Tshoj smt stencil tsim manufacturers, lwm tus neeg, Hoobkas
