Electronics Forum: pc boards photos (Page 36 of 42)

Re: Pin-to-paste

Electronics Forum | Sat May 01 09:55:59 EDT 1999 | Bob Willis

Hi all, We're starting up tests for pin-to-paste and, well, things could be better. We're testing different pastes and we're testing different apertures rules and, well, we're still testing. It's coming close and we're getting pretty good

PIHR Inspection Criteria

Electronics Forum | Thu May 17 07:36:40 EDT 2001 | Bob Willis

Here is a copy of a draft document on PIHR Inspection I have jotted down on a flight to Scotland yesterday, any comments suggestions etc ? I have already most of the photos for the standard but as you know there is nothing in the IPC document it just

Re: Need advise on regarding Vias

Electronics Forum | Tue Dec 14 22:17:33 EST 1999 | Dave F

Armin: How ya doin� bud? CK gives good advice, but I'd like to take a bit of a different angle. Q1. For 0.7 mm (0.027in) diameter hole for vias, what�s the minimum annular ring for this hole diameter? Depends on what you�re trying to do. For in

Re: Ceramic PCB's

Electronics Forum | Wed Feb 25 08:30:44 EST 1998 | Earl Moon

Happy Holidays All, I am searching out a vendor (US preferred) who can fabricate a ceramic PCb with etremely fine lines. Please reply if you are a vendor, or know of one. Thanks, Wendy CERAMIC CIRCUITRY Starting with hybrid thick film circ

Ceramic PCB's

Electronics Forum | Wed Feb 25 08:34:00 EST 1998 | Earl Moon

CERAMIC CIRCUITRY Starting with hybrid thick film circuits in 1965 at Sperry Flight Systems, I have been involved with ceramics (usually aluminum oxide) as the substrate material. Then, we developed "multilayer" circuitry (replacing "cordwood" module

Machine good/bad points

Electronics Forum | Mon Mar 25 09:26:16 EST 2002 | stefwitt

you should also look into the different placement methods and their advantages and weaknesses. A chip shooter with a rotary head and lets say 18 nozzles always places one component and picks one at the same time. PC board and feeder table move while

Soldermask thickness

Electronics Forum | Fri Oct 03 07:49:18 EDT 2003 | mk

Mask Musings. Soldermask (SM) and its functions have changed and evolved over the years. As an ex-solder mask applicator, I can remember screening Colonial High Gloss Epoxy soldermask on boards back in the early 80's, ending up with a thickness that

Pasting ahead

Electronics Forum | Mon Nov 06 14:00:45 EST 2006 | nodlac

Checks calendar ...nope not April 1st. -The fresher the paste the better the solder joint. Agreed - My dilema here is upper management wants the two lines to share one stencil printer thus saving the cost of purchasing a second printer. They propos

Re: BGA rework : IR or convection

Electronics Forum | Thu May 13 12:41:10 EDT 1999 | Eric

We are currently looking at purchasing some BGA rework equipment. Could someone give us the pro's and cons of IR heating (top/bottom)vs. hot air convection ? All other tips are also welcome. Thanks Philip, I have been doing

ScanPlace or any scanner cad package

Electronics Forum | Thu Jan 17 18:29:01 EST 2002 | Bill Loving

Dear Jason, Thank you for posting your request on SMTNET. Please note that ScanCAD International provides an upgrade path for all installed customers, regardless of the age of their system. Currently, hundreds of systems are installed in 37 countr


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