Electronics Forum | Fri Dec 01 00:37:20 EST 2000 | arminski...aka..Dreamsniper
I have a proto-type PCB with a 48-Pin Fine Pitch TSOP (0.5mm pitch) with a dimension of 19mm L x 11.50mm W x 1.10 Thickness. They are at the bottomside of the PCB and I need to wave solder the board. There are 8 of them at the bottom side. Are they o
Electronics Forum | Tue Oct 24 19:40:40 EDT 2000 | Dave F
From the SMTnet Library Terms & Definitions [er whatever they call it] � Emulsion. A material that suppliers build-up on a printing screen to block portions of the screen. The un-blocked (open) portion of the screen define the pattern for depositi
Electronics Forum | Fri Oct 06 15:12:17 EDT 2000 | Dave F
Alberto: Consider Dymax 911. It�s wave solderable and passes Cl ion, copper mirror, SIR, and electromigration tests. We have heard good things about Masterbond uV curables, but have not looked at them. 911 doesn�t cure very deep into the little d
Electronics Forum | Tue Oct 03 16:56:32 EDT 2000 | JAX
Not sure if I agree with your justification but I might need to read it a few more times to figure it out. I agree that aquiring a dispensing machine is is a good purchase. Maybe you should let him in on the material savings. How many adhesive stenci
Electronics Forum | Wed Aug 16 16:43:47 EDT 2000 | Steve Thomas
O.K., I give up. I am through trying to solder thermocouples on to 20 mil pitch QFPs. Whether it's my lousy technique (fairly likely), the wrong solder (Kester calls it thermocouple solder, and who am I to argue...it's a Sn10Pb88Ag2 alloy) or just
Electronics Forum | Thu Aug 17 01:31:31 EDT 2000 | Dreamsniper
Steve, I'm using 5 Sn/1.5 Ag/93.5 Pb Solder wire with a melting point of 300 deg. C to connect my thermocouples on smd components for thermal profiling. I'm using a soldering iron with an adjustable temp. to be able to melt my solder wire. Temp is ab
Electronics Forum | Mon Jun 12 22:00:51 EDT 2000 | Dave F
Could be. What are your profiles? 2) Au finish fail => Could be, but that the connections can be made with hand soldering makes this a low probability cause, assuming the activity of the flux used in hand soldering is not significantly different fr
Electronics Forum | Mon Jun 05 16:49:11 EDT 2000 | Chris
Is anyone having trouble with PSA (pressure sensitive adhesive) cover tape used with embossed plastic tape? I am placing 0402 components out of embossed plastic tape with PSA cover tape. The feeders gum up, the take up reels are impossible to remov
Electronics Forum | Fri May 26 02:22:18 EDT 2000 | Sal
Generally a good and safe option when selecting a printer, A rhobust machine with good process capabilities. We print anything from 0402's to CCGA's using proflow, as well as print adhesive with no problems. The 265 ranges from the MK1 TO Infinity mo
Electronics Forum | Tue May 23 09:01:21 EDT 2000 | Wirat S.
Dear all friend, I found problem of soldering bridging between SMT Chip terminal & Glue , but under the chip body. My process was double side SMT assembly with bottom side adhesive & heat curing, then wave soldering with water soluble flux (OS type)
