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Düşük adetli PCB siparişi için ne tür testler uygundur??

I've ordered fabrication and assembly of small PCB batches (100adet) zaten birkaç kez. Fabrika bana PCB üzerinde test yapmak isteyip istemediğimi her sorduğunda. Ama bu konuda ne yapacağımı bilmiyorum. Ve onları kendim test ediyorum. Sonra, testin sonucu kabul edilemez 15% lehimleme sorunları. Çok fena. Sanırım tedarikçiden teslimattan önce bunları test etmesini isteyeceğim.

For the order with large volumes, a certified factory usually tests the bulk for you without informing you. For low-volume PCB, we suggest

  • Uçan Sonda (basically an automated way of contacting pins and checking if the resistance meets expected values). This also comes relatively cheap since the programs can be created from netlists which have to be specified by the customer.
  • In-Circuit-Tests: This is probably the most extensive test method we use (and also the most expensive). Temel olarak, we build an adapter that will host the DUT and contacts the various test points. Using integrated Boundary Scan techniques and stimulating digital and analog signals nearly every mode of testing is possible.
  • Boundary Scan: The Flying Probe can mainly contact test points or larger points such as resistors, … if there is no available point to touch it on the PCB, the Flying Probe is of no use. To test Inter-IC connections we mainly rely on Boundary Scan Tests if the Controller supports these. But they have their limits as well. Ayrıca, programs can bewrittenautomatically but need to be adapted.

These can basically cover the requirements. hala, 100% testing is not possible, but it is a good idea to manage the quality and your supplier.

#PCB Düzeneği #PCB Testi

https://www.youtu.be/rjtv43l6kuY?si=LMJAjEiOA8h2E2Gc

Resmi Oliver Smith

Oliver Smith

Oliver, PCB tasarımı konusunda yetenekli deneyimli bir elektronik mühendisidir, analog devreler, gömülü sistemler, ve prototipleme. Derin bilgisi şematik yakalamaya kadar uzanıyor, cihaz yazılımı kodlaması, simülasyon, Yerleşim, test yapmak, ve sorun giderme. Oliver, elektrik tasarımı yeteneklerini ve mekanik yeteneğini kullanarak projeleri konsept aşamasından seri üretime geçirme konusunda uzmandır.
Resmi Oliver Smith

Oliver Smith

Oliver, PCB tasarımı konusunda yetenekli deneyimli bir elektronik mühendisidir, analog devreler, gömülü sistemler, ve prototipleme. Derin bilgisi şematik yakalamaya kadar uzanıyor, cihaz yazılımı kodlaması, simülasyon, Yerleşim, test yapmak, ve sorun giderme. Oliver, elektrik tasarımı yeteneklerini ve mekanik yeteneğini kullanarak projeleri konsept aşamasından seri üretime geçirme konusunda uzmandır.

Başkaları Ne Soruyor?

PCB montajı sırasında SMT parçalarını genellikle nasıl düzenlersiniz??

Birinin birçok SMT bileşenine sahip bir kartı elle monte ettiğini varsayalım.. THT'den farklı olarak, SMT bileşenleri genellikle etiketlenmez. İnsan nasıl küçük kalabilir? (<100) quantities of such parts properly organized during assembly? Are there particular tools? Storage devices? Methods?

Modern LED ışıklar termal yollar kullanıyor mu??

I have a technical question about thermal management with mid-power LED diodes.Do you use thermal vias on the PC board anymore? Either under the LED diode footprint or even around the footprint?
Depends on the application limits and cost targets.

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