Full Site - : how long do printed circuit boards last (Page 7 of 19)

Re: Off Pad Printing

Electronics Forum | Mon Jun 28 22:02:13 EDT 1999 | Dave F

| Hey there gang, how's it going ? | | Anyway's here's my probelm, got a new product to build double sided reflow, lot's of so20's and PLcc's 1206's, 0805's the usual stuff. Probelm is all the pad spacing of the 1206's are too big, my component's ar

Polyimide See Thru Stencils for Printing Solder Paste

Electronics Forum | Tue Jun 23 11:27:37 EDT 1998 | Russ M

Has anyone seen/used these yet? They seem to have lower coefficient of friction for release of paste and less wear and tear as well as conforming to the board better (plastic has better memory than stainless). Also there is no mesh so a larger image

Re: Polyimide See Thru Stencils for Printing Solder Paste

Electronics Forum | Tue Jun 23 19:01:21 EDT 1998 | EC

| Has anyone seen/used these yet? They seem to have lower coefficient of friction for release of paste and less wear and tear as well as conforming to the board better (plastic has better memory than stainless). Also there is no mesh so a larger ima

Re: Off Pad Printing

Electronics Forum | Tue Jun 29 04:45:10 EDT 1999 | Earl Moon

| | Hey there gang, how's it going ? | | | | Anyway's here's my probelm, got a new product to build double sided reflow, lot's of so20's and PLcc's 1206's, 0805's the usual stuff. Probelm is all the pad spacing of the 1206's are too big, my componen

Possibility of a cheaper pick and place machine design?

Electronics Forum | Fri Jul 04 19:17:37 EDT 2014 | andrespena

Hi (I don't know if this forum is the best place to post something like this, but I don't know of other places on the internet, so... sorry if I'm in the wrong place) Might there be an easier way to add components (e.g. computer chips) to a circuit

baking boards, revisited

Electronics Forum | Fri Oct 04 11:34:42 EDT 2002 | Bob Willis

Some additional comments from a paper may be of interest. Baking Printed Circuit Boards - Why and How Baking printed boards prior to conventional and surface mount assembly should not be necessary. Often boards are baked for historical reasons; in

Re: Polyimide See Thru Stencils for Printing Solder Paste

Electronics Forum | Thu Jun 25 09:13:25 EDT 1998 | Brad Stapley

| Has anyone seen/used these yet? They seem to have lower coefficient of friction for release of paste and less wear and tear as well as conforming to the board better (plastic has better memory than stainless). Also there is no mesh so a larger ima

OSP vs HASL

Electronics Forum | Mon May 14 17:12:20 EDT 2001 | davef

Continuing along the path that Brian took ... IPC-7525 gives design guideline for stepped stencils. It goes something like: * Stepped area SB GT 25 thou from pads located on the greatest thickness of the stencil * Pads in stepped area SB GT 35 tho

Aye aye aye.

Electronics Forum | Fri May 15 12:01:34 EDT 1998 | Justin

| | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | We have

delamination test

Electronics Forum | Thu Sep 01 18:53:08 EDT 2005 | Board House

Pr. I agree with some of the above responses. if you are seeing Delam issues with incoming PCB's the following should be check. 1) Check the OEM Print to what Material they are calling out to be manufactured with. 2) If they are calling out for S


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