Electronics Forum: leaching at hand solder (Page 1 of 3)

SnPbAg solder paste at reflow oven

Electronics Forum | Tue Nov 21 09:46:19 EST 2006 | jax

I assume you are talking about Sn62Pb36Ag2 solder. You should not see any added concerns when subjecting Sn62 to multiple reflow cycles as compared to Sn63. As compared to Sn63Pb37: Reduced leaching issues Increased Wetting due to lo

Solder at gold finger

Electronics Forum | Mon Feb 05 20:43:27 EST 2001 | davef

1 Solder on gold fingers comes from: 1a About 70 % of the time it's caused by poor cleaning of screen printer, staging area (table), conveyor, reflow oven chain or belt, and keeping boards separate from cleaning process 1b After loading paste onto

Re: SMT at home?!

Electronics Forum | Sat Jan 17 15:06:54 EST 1998 | Stefan

| Is there any way to implement SMT at home? | I want to assemble a prototype board of mine. | How can I hand-solder a 208-pin 0.5 mm lead | pitch PQFP -- lead-by-lead (the usual way), | or side-by-side (partial heating method)? | Alas, no SMD rework

Re: SMT at home?!

Electronics Forum | Fri Jan 16 23:33:32 EST 1998 | Scott

| Is there any way to implement SMT at home? | I want to assemble a prototype board of mine. | How can I hand-solder a 208-pin 0.5 mm lead | pitch PQFP -- lead-by-lead (the usual way), | or side-by-side (partial heating method)? | Alas, no SMD rework

SMT at home?!

Electronics Forum | Fri Jan 16 13:41:53 EST 1998 | Luchezar Georgiev

Is there any way to implement SMT at home? I want to assemble a prototype board of mine. How can I hand-solder a 208-pin 0.5 mm lead pitch PQFP -- lead-by-lead (the usual way), or side-by-side (partial heating method)? Alas, no SMD rework equipment a

Re: SMT at home?!

Electronics Forum | Mon Jan 26 04:48:48 EST 1998 | Grant Petty

| Is there any way to implement SMT at home? | I want to assemble a prototype board of mine. | How can I hand-solder a 208-pin 0.5 mm lead | pitch PQFP -- lead-by-lead (the usual way), | or side-by-side (partial heating method)? | Alas, no SMD rework

omit stencil apertures to hand solder or paste, reflow then solder.

Electronics Forum | Thu Feb 27 16:23:37 EST 2020 | dwl

http://www.circuitnet.com/news/uploads/3/Comparing-Soldering-Results-of-ENIG-and-EPIG-Post-Steam-Exposure.pdf Years ago, I battled this problem. ENIG PCBs reflowed with active WS flux. We built one side, and then washed them because they were going

BGA Warping at the corners

Electronics Forum | Mon Jun 17 09:52:33 EDT 2013 | sara_pcb

My circuit board contains 11 x 11 matrix 1mm pitch BGA, The device was tested in socket on evaluation Board. We handed over the actual PCB & devices for re-flow. The assembly house first re-flowed all the SMT components other than BGA. BGA was placed

Re: Floating part at wave.

Electronics Forum | Mon Sep 11 09:39:31 EDT 2000 | Chris May

Charlie, Check: a)That your wave is not too high/powerful as this will push up components due to force exerted by mass of solder b)That your conveyor is set at optimimu height so that a) is not required. If conveyor is too high, then the wave will

Sn100C - anyone use this at Reflow?

Electronics Forum | Thu Mar 12 13:20:07 EDT 2009 | ck_the_flip

Before anyone tells me to search the fine archives, I already did! I typed Sn100c and Reflow, and nothing came up. Anyway, any of your folks out there run Sn100C across the board - Reflow, Wave and/or Selective, and Hand-Soldering? If so, please p

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