Electronics Forum: dry film (Page 1 of 9)

How much is the exposure tolerance for PCB auto dry film?

Electronics Forum | Fri Sep 28 00:50:40 EDT 2018 | benny

How much is the exposure tolerance for PCB auto dry film?

How much is the exposure tolerance for PCB auto dry film?

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

How much is the exposure tolerance for PCB auto dry film?

Electronics Forum | Sat Sep 29 04:55:49 EDT 2018 | sanneyyu

for pattern position with +/-2mil tolerance, pattern width may minus 0.5mil max with the traditional auto exposure.etching tolerance determined by the base copper foil.

Coating Thickness Measurement Equipment

Electronics Forum | Thu May 31 10:12:22 EDT 2012 | edmaya33

Positector for dry film.

BGA Via Tenting

Electronics Forum | Fri Dec 17 14:30:42 EST 2004 | Dreamsniper

I goy this issue: Voids in almost every ball of my BGA's prcessed since we changed our BGA via tenting to double tenting. The tenting is done with a dry film application to fill the via from the solder side then apply LPI Mask on the surface of the

BGA Via Tenting

Electronics Forum | Fri Dec 17 14:31:52 EST 2004 | Dreamsniper

I got this issue: Voids in almost every ball of my BGA's processed since we changed our BGA via tenting to double tenting. The tenting is done with a dry film application to fill the via from the solder side then apply LPI Mask on the surface of the

Cracked SMT Capacitors

Electronics Forum | Wed Jun 13 17:15:48 EDT 2001 | medernach

Yes, I've seen it recently and it's most likely a component problem. A cap is essentially a sandwich comprised of multiple layers. the layers are either wet film or dry film. The end terminals may either be hot soldered or sputtered so there are a

Tented Via's

Electronics Forum | Mon Feb 25 12:21:16 EST 2008 | stevek

Rather than having the artwork cover the via as with tenting dry film, and letting the mask do what it will, the preferred way is to do a second op silk screen with something like SR1000 just in the vias themselves to plug them. This doesn't always

Re: Solder mask materials and equitements wanted

Electronics Forum | Sat Aug 29 08:43:35 EDT 1998 | Dave F

Hi, Friends, Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! Have a good day Xingsheng Xingsheng: Consider the follo

Curing Conformal Coating

Electronics Forum | Thu Jun 05 18:11:53 EDT 2008 | jlawson

Also coating costs depends on solids content vs final dry film thickness. Some newer UV coatings are 100% solids, so what you put down you get on the PCB after cure, use no solvents at all. So a cost to look at are qty of PCB per litre of material. T

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