Electronics Forum | Thu Sep 17 07:06:15 EDT 1998 | joakim fagerlund
We have problems with voids when we solder lids to ceramic flatpackages. The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel The solder is attached to the lid (preform) and the solder material is Au/S
Electronics Forum | Wed Jul 29 17:39:40 EDT 1998 | David Spilker
| Hello everybody. | Remember I posted some questions on the smtnet regarding placing the thru hole connector using paste and reflow(pin in hole). I have able to accomplish the process succcesfully.....but I have a problem. The boards are failing at
Electronics Forum | Mon Jul 27 17:09:20 EDT 1998 | Rin
| We are trying to reduce the number of units fail at system test due to flux on gold finger. We know so far that the flux is deposited onto the | goldfinger during touch-up or rework and to reduce the contamination we are | planning to imp
Electronics Forum | Wed Jul 08 17:31:31 EDT 1998 | Dave F
smd: I think the idiom is "schmuck," rather than "putz." ;-) What are you concerned about? That the residual water in the 80 pin connector housing will flow down the boards and rot-out the bottom of your new boxes? Dave F | I am about to place a
Electronics Forum | Mon Jun 29 07:17:59 EDT 1998 | smd
| Would anybody like to share experiences with adding and using the | SECS/GEM interface on a multi-vendor line(DEK,FUJI,PANASONIC, | UNIVERSAL,BTU)??? I still don't quite understand how to use this interface. Can someone explain it? Will someone ex
Electronics Forum | Wed Jun 10 21:58:20 EDT 1998 | Dave F
We use them, but we never thought about them. WHAT ARE THEY? The hand lotion we provide for our operators. BACKGROUND: Operators hands take a beating. They 1 Work in a humidity controlled 35 to 50%RH environment that is drying 2 Wash before and
Electronics Forum | Fri May 22 22:18:18 EDT 1998 | David Newman
Hello, I am looking for suggestions for cleaning pcb's after the routing (fabrication) process. Keep in mind that these pcb do not have components intalled on them yet. We have considered pre-drilling the routing plunge points, but cost and capacity
Electronics Forum | Tue Jun 09 17:01:02 EDT 1998 | Earl Moon
1/8" cutters, although they can only be used | with our newer height-controlled machines. | 3. Reduction of operating parameters. Reduced Z-axis plunge rates for the | larger cutter sizes. | 4. Addition of a 1/2 sec. dwell at the plunges. The small
Electronics Forum | Wed May 20 20:16:29 EDT 1998 | D. Lange
| We notice that DI water seems to tarnish or discolor the metal packaging on crystals and DIN connectors. Our marketing types like the shiney metal surfaces. We don't want to hand solder these parts after washing. | Any suggestions? | Dave F Dave,
Electronics Forum | Fri Feb 20 14:33:47 EST 1998 | Dave McFadyen
Looks like (so far) we have a concensus. Follow the paste manufacturers guidelines on storage. Normally, refrigeration is required to achieve max shelf life between 3 and 6 months in original closed container. Water-wash pastes are much more active t
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