Category:PCB PCB Assembly Service

Group Administrators: 1 | Group Member: 383 | Group Threads: 383

In assembly the bare board is populated with electronic components, called a "printed circuit board assembly" (PCBA). In through-hole technology, the component leads are inserted in holes surrounded by conductive pads; In surface-mount technology (SMT), the component is placed on the PCB so that the pins line up with the conductive pads or lands on the surfaces of the PCB.;

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5 comments
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melf diode short together after reflow soldering

We had alot of problem with melf diode short together after reflow soldering. The clearance is about 0.8mm & we used "v" shaped opening . PLease comment !(See More)

Albert Palau Llort
2017/2/28 3:34:35
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207 views

Reflow Specifications

Normally the specs I monitored in our temperature profiles are Slope 1-2 Deg C/sec, preheat 60 - 120 Sec at 120 Deg C - 150 Deg C, peak 215+/- 10 Deg C, above 183 Deg C is 45 - 75 Sec, total reflow is...(See More)

Robert Fransson
2017/2/28 3:33:42
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236 views

Soldering fumes

Does any body know if there are any legitimate health or safety reason's to vent solder fumes, at both reflow and hand soldering work stations? Personally I don't like to have the fumes in my face, bu...(See More)

Bernard REMOND
2017/2/28 3:25:07
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383 views

Study on Solder Shelf Life

Hi, I'm looking for research/study done on solder shelf life by using accelerated aging process ( steam age or dry air oven bake at 150C & etc ) Perhaps you could help to advise correl...(See More)

Clark
2017/2/28 3:24:47
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310 views

Matted surface vs solder ball

I need teoretical info for theme "Matted surface vs solder ball". Is it right that some solder pastes decrease solder balling but give matted surface after reflow? That diference between these pastes ...(See More)

charlene
2017/2/28 3:21:34
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318 views

setup reduction for machine feeders

Has anyone looked at setup reduction for machine feeders. We have made some gains through changing the flow of work but as lot sizes decrease the number of parts required remains the same. We remove a...(See More)

anjenkuhn
2017/2/28 2:57:05
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244 views

Embedded flexs

This is our first experience with running embedded flexs. Our board supplier suggested that we prebake our assemblies before placing components. What does everyone else do? Is prebaking normal when a ...(See More)

werfried kuneth
2017/2/28 2:52:47
5 comments
344 views

FPC process

Hi, our factory is introducing the FPC process. I have some question to ask.Could anyone reply/ 1.how can we fix the FPC in the mounting and printing process? 2.how can we set up the...(See More)

francesco81rs
2017/2/28 2:50:35
0 comments
347 views

AX-5 & ACM

For anyone who is currently running these machines I would like to get some feedback (positive and negative) on them. How do they run in a production enviorment? Is the modular machine (AX-5) a pain i...(See More)

a.spada
2017/2/28 2:29:31
5 comments
271 views

MPAV Y-Axis overflow

Hey all, Anybody out there able to shed some light on the above error.My Mpav powers up with this error and wont let me do anything the manual is not much help either. Regards(See More)

Rolf Niemand
2017/2/28 2:25:54