Electronics Forum | Wed Sep 19 10:34:44 EDT 2018 | sarason
Now I have to guess and make a few assumptions. Without looking at the back side of the board my guess is you have some 400-100V diode bridges before the resistor ,zener and the FET . The FET is a 500V 0.85 Rdson NFET. All of this suggests a chopper
Electronics Forum | Thu Sep 20 03:31:42 EDT 2018 | minhhaioh34
Hi all, I need some pro help me with issue bubbles after coating. some information for some pro: Machine: Asymtek Chemical: Achime AVR80 Oven: IA 4 zoon4 ( setting 100 100 90 80 conveyor speed: 0.6 m/min). I had happened before and after the oven. W
Electronics Forum | Fri Sep 21 17:33:01 EDT 2018 | michaelszuch
Hello Hai, The first step is to determine where in the process the bubbles are being generated - either during coating or during curing. You can easily check this by letting a few boards air dry (no oven) and comparing them to the oven-cured ones. I
Electronics Forum | Thu Sep 20 07:18:42 EDT 2018 | proceng1
Has anyone else been experiencing this lately? We have had a rash of boards that come in properly vacuum sealed. We store them in the hot room until we are ready to build, and we get bubbles under the solder mask. We've had 4 different jobs, all di
Electronics Forum | Thu Sep 27 09:43:53 EDT 2018 | directx995
Hello everyone, I've been working on a project to create Cycle Time Calculator. To be simple, easy to use, and fast. We are EMS, we do a lot of calculations and offers, it takes time. I want to design calculator which will work without adding exampl
Electronics Forum | Fri Sep 28 02:48:46 EDT 2018 | teresat2
Principle A layer of photosensitive material (photosensitive oil or dry film) is applied to the copper foil on the board surface, and PCB manufacturer should be use the position is exposed by black film, This applies to most PCB factories, especially
Electronics Forum | Mon Oct 15 02:34:17 EDT 2018 | directx995
@Reckless on GI14 machine, we have around 90k picks per week. About maintenance I rly can not say, since I'm head of programming and not maintenance. But as far as I know GI14 is rly complex just as @Comatose said, but it is much different then GC6
Electronics Forum | Tue Oct 30 15:04:36 EDT 2018 | SMTA-Shafiq
Steve, Part numbers with the same specification are not part of the same BOM. Scenario is, SMT Line #1 builds Products X, Y and Z Product X has a part number #1 that is a resistor with 50 ohm value and a power rating Product Y has a part number #
Electronics Forum | Fri Oct 05 15:35:19 EDT 2018 | davef
Paste sticking to squeegee: * Squeegee is heavily magnetized * Some pastes stick more than ... * Plastic squeegees stick more than metal * Old metal squeegees stick more than new * Paste needs to be worked * Paste needs to be at room temperatur
Electronics Forum | Sun Oct 07 13:59:17 EDT 2018 | bdamico
Hello Reckless, My name is Brian D'Amico. I am the president of MIRTEC's USA Division. First of all I would check with the AOI vendor regarding any refurbished equipment they may have on hand. We at MIRTEC typically have some vintage desktop equ
