Electronics Forum | Fri Aug 17 10:01:50 EDT 2001 | Hussman
Howdy All, Just want to know if solder pre-form really work. Any pit falls? Looking to solder a through hole connector (70 pin) in a 0.062" PCB with 10 zone convection reflow oven. My biggest worry is getting enough wetting on both sides of the b
Electronics Forum | Tue Oct 30 08:55:54 EST 2001 | Stefan Witte
Chris, I should have read your request more carefully. .010" glue dot diameter would require at least .005" needle diameter. No way you can do it with the above mentioned machines. You are already stretching the capability of glue machines for 0402 c
Electronics Forum | Mon Nov 26 14:48:43 EST 2001 | PeteC
The tooling fixture has tooling pins to accomidate your PCBs. Typical PCB tooling holes are 0.125" dia. non-plated thru holes and 0.250"x0.250" from the edge of the PCB. Check out this link to EMC Global Technologies. They mfg. tooling fixtures for U
Electronics Forum | Tue Dec 04 09:35:58 EST 2001 | jdill
I have successfully reflowed 208,100 pin QFP'S and SOJ 28's on the bottom side of the board. The only thing i am "SCARED" to reflow on the bottom side are BGA'S. We used to turn off the bottom heaters but we did a trial run with them off and the boa
Electronics Forum | Tue Dec 11 20:15:36 EST 2001 | mparker
What happened to good ol' 30 ga. hook up wire? I used to be a whiz with a wire wrap gun. I've even hand soldered wires to a 240 pin QFP (the Engineer was too cheap to buy a $80 socket). Just what are they teaching in these edifices of matriculation
Electronics Forum | Mon May 27 18:16:28 EDT 2002 | Carol Stirling
Hi, I'm looking for Temporary Stencils to assist placement using a Sniper Rework Station. The PBGA is a MPC555 Motorola with 272 pins. The ball map shows 4 populated outer rows, then 16 balls in the centre of an open, unpopulated area. Could I g
Electronics Forum | Tue May 28 08:34:00 EDT 2002 | Hussman69
Hello, I know I will probably get a dozen "check the archives" answers, but what the heck. What is YOUR typical polarity mark for SMT devices? Do you use silk screen or cut a corner off a pad? How do you identify pin one on ICs? Let me know and
Electronics Forum | Wed May 29 19:17:17 EDT 2002 | russ
We are starting to see a large increase in the use of through board gold plated connectors that require hand soldering with the limitation of .o6" encroachment up the pin. What is the best way to accomplish this? we currently scrap about 5-10% of t
Electronics Forum | Wed Jul 03 14:34:45 EDT 2002 | razorsek
Jeff, what I generally use as a rule of thumb on multi-row connectors was a strip on the trailing side of the connector as it flows through the wave. The strip was always the same width as the diameter of your through-hole. The distance of the stri
Electronics Forum | Wed Sep 25 02:52:25 EDT 2002 | jkhaiar
Hi There Good point from all contributers.Depending on the coast effect and production ability we used a heat resistant coating directly applied to the plastic base of the PCI connector in a very dense SMT PCB.we used a short pulse soldering by run
