Electronics Forum: fr4 baking (Page 4 of 6)

PCB Bake

Electronics Forum | Wed Mar 05 11:54:44 EST 2003 | ruggi

Hi JFB, I think this is an unnecessary activity, but it may depend on your RH. We are in the Spokane, WA area, and the RH avg year round is about 25-30%. We have never baked our PCBs in the 9 years I've been here across 800+ varieties, including

FR4 boards Delamination Cause?

Electronics Forum | Thu May 15 15:02:03 EDT 2008 | ccross

We have seen this problem before. We have ALWAYS found it to be a board vendor issue. Also, we tend to see it more during the summer months. Our solution has been to bake our PCBs @ 50 deg C for 1 hr prior to use. We use immersion white tin board fin

HASL Life Span/Shelf Life

Electronics Forum | Mon Sep 21 15:45:35 EDT 2009 | boardhouse

Hi Ryan, Standard shelf life for FR4 Non-RoHs & Rohs material with HASL or Lead Free HASL would be 12 months + in a controlled environment. on all RoHs materials over 6 months, we would suggest your board shop run a solder ability test before ship

Re: Baking a Populated PCB

Electronics Forum | Fri Jul 30 17:16:59 EDT 1999 | Dave F

Hello Netters, I have a customer who wants us to aquaeos wash a PCB after all operations have been performed. The PWB is two layer FR4 with a Transformer, a Multichip Module with Conformal Coating, (6) 11" insulated wires that are tinned on e

Make That F

Electronics Forum | Fri Jul 30 17:24:24 EDT 1999 | Dave F

Hello Netters, I have a customer who wants us to aquaeos wash a PCB after all operations have been performed. The PWB is two layer FR4 with a Transformer, a Multichip Module with Conformal Coating, (6) 11" insulated wires that are tinne

FR4 boards Delamination Cause?

Electronics Forum | Fri May 23 23:47:46 EDT 2008 | dint46

Wayne; Several things. 1.check the vendors and see what black oxide they are using are they the same ? It might be that. 2.You should bake your pcbs before the thermal stress is applied. To remove moisture. At your shop. The proce

board delaminated after reflow

Electronics Forum | Wed Apr 08 11:33:51 EDT 2009 | 1036

2) STD FR4 material with HASL finish, 4 layer board. Reflowed under tin-lead temps with another 4 layer board same time(no delamination problem). 3) We uasualy do not pre-bake board unless board is too old. 4) We do not have the board on hand right

Flex Cable

Electronics Forum | Tue Jan 21 13:43:12 EST 2014 | rgduval

Jorge, Your description of the process sounds about right. A fixture to hold the flex cable taut (and in a repeatable location) that allows you to paste/place/reflow is essential. As for notes: Be hyper aware of moisture/humidity in regards to

Baking a Populated PCB

Electronics Forum | Fri Jul 30 14:53:01 EDT 1999 | Tom B.

Hello Netters, I have a customer who wants us to aquaeos wash a PCB after all operations have been performed. The PWB is two layer FR4 with a Transformer, a Multichip Module with Conformal Coating, (6) 11" insulated wires that are tinned on exposed

Re: Outgassing in Wavesoldering

Electronics Forum | Sat Jun 13 11:00:21 EDT 1998 | Earl Moon

We are very concerned about outgassing in wavesoldering. If anyone knows how to use properly well pcb's before soldering in order to avoid this problem please let me know. I have this problem in FR4 large double sided pcb's. My soldering line is


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