Electronics Forum: solder paste water soluble m705-515a-hn (Page 13 of 22)

Solder Paste Dispense problems

Electronics Forum | Thu Nov 30 15:18:54 EST 2000 | Rich Z

All, I have a reoccurring issue with the Alpha-Metals WS601, water-soluble paste in that the size 20 nozzle of the auger-type dispenser on my Camalot Gemini II clogs up rather frequently. Every few hours we are having to go in and clear out the nozz

Paste Tack Time

Electronics Forum | Fri Mar 24 03:06:35 EST 2000 | Sal

guys Using a well estrablished water soluble solder paste, but having problems with tack time. Data sheet recommend a couple of hours but we are seeing problems after about 15 minutes with 0402/0603 componenets bouncing off. The printer environment

Re: Temperature & Humidity Effects on Solder Paste

Electronics Forum | Fri Jul 24 12:35:56 EDT 1998 | Russ Miculich

The variance of useability of any of the pastes with a difference of 5% in your overall environment will probably not even be measurable in the difference of the paste be it RMA, Water Soluble, or No Clean. What is the printer you are using and is i

Re: Paladium Pillows and Bad Dreams

Electronics Forum | Mon Feb 23 16:59:43 EST 1998 | Doug Romm

Dave, "Paladium Pillows and Bad Dreams"....that's a good one! I've been doing this for the last 9 years and I've heard quite a bit, but that's really cute! Seriously, in reference to the 'pillow effect' when the lead looks like it is "sitting" on to

qfp reflow problems

Electronics Forum | Thu Apr 15 16:07:37 EDT 2004 | barry

Hi there all, we are having problems with 2 qfp devices. grainy poorly reflowed solder joints. One 100 pin .5mm pitch, and one 64 pin .5 mm pitch . Both of these devices have a thermo pad on the back of them (pad area soldered to back of device)which

Poor Solderability on TSOPs with Alloy 42 Leadframes

Electronics Forum | Wed Jun 29 17:38:16 EDT 2005 | GS

Several years ago, we had almost same pbm, best results have been obtained by using water soluble paste (those time the old AM1208). Any way, to get a good toe meniscus is not so easy. Talking about CTE, keep in consideration the internal die of TSO

Re: white residue after wash

Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook

| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro

Re: Cleaning No-Clean

Electronics Forum | Thu Oct 15 13:55:43 EDT 1998 | Steve A

Dave, The first step would be to learn to accept the residue. IPC class 2 has no problem with it. If that is not possible, I am not sure why a no clean is necessary- but I will take your work for it. Alcohols will dry out the residue, and turn it

Blue Haze ( Not the same as Purple Haze)

Electronics Forum | Tue Sep 03 17:48:34 EDT 2002 | dphilbrick

My customer is finding a blue haze on some SMT pads after processing, kind of looks like a water spot on the surface of solder joints. It requires 20x mag and very good lighting to see. We have done 2 different ionic tests and the boards pass to clas

Solder Ball After Reflow Process

Electronics Forum | Wed Aug 16 03:48:24 EDT 2006 | umar

Hi All SMT Net Team Member, I always have problem at MY SMT process and production side, Every time product running at my production side always found a lot solder Ball issue near the pad of SMT chip component. We had quite hard to do the trouble s


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