Electronics Forum: after (Page 414 of 696)

Selective Gold Plating

Electronics Forum | Mon Sep 24 22:56:52 EDT 2018 | sarason

IF you are wanting to do to this you are to late in the process. The gold is usually applied after the copper etching of the multilayer sandwich. The edge is extended beyong the board edge and the all pins are connected together with a bussbar. The b

Package rebake

Electronics Forum | Fri Nov 02 19:34:19 EDT 2018 | sarason

I am assuming that your application is Automotive. The logic here is that the product has got to at least run for 8 years or more. The prebake removes any moisture that may creep into the product during the wait time. A little moisture combined with

Package rebake

Electronics Forum | Wed Jan 09 01:22:39 EST 2019 | kenneth0

Hi Simond, The baking process is likely to remove any moisture after the cleaning process. We wouldn't want any moisture trapped as this might cause delamination if the package is subject to subsequent heating/reflow process. Hence there's a staging

Battery Nickel strips soldering in HASL PCB finish

Electronics Forum | Wed Nov 21 06:01:57 EST 2018 | premkumar_haribabu

Hi Davef, Thanks for your quick reply , just my inputs - we using 99.99 % pure nickel strip for soldeirng & when we do manual soldering this nickle stips its working well but when coming to SMT reflow even after high peak temperature ,its removes ev

Can someone take a measurement on a HELLER oven please

Electronics Forum | Mon Dec 03 18:30:29 EST 2018 | slthomas

Not sure how the lead screw drive gear is locked in place but is it possible that it's slipping in both directions (when driving the rail both forward and backward) and then not catching until after the other end has already moved some? You could h

Can someone take a measurement on a HELLER oven please

Electronics Forum | Mon Dec 03 18:31:06 EST 2018 | slthomas

Not sure how the lead screw drive gear is locked in place but is it possible that it's slipping in both directions (when driving the rail both forward and backward) and then not catching until after the other end has already moved some? You could ha

Solder Joint Discolouration

Electronics Forum | Fri Jan 04 11:28:30 EST 2019 | bane016

we never used a paste of this type...not everything in the paste type and profile..Everything has an impact on soldering quality and sensitivity of materials quality and type of pcb...atmosphere and nitrogen in oven...Try step by step to solve the pr

Defect of the Month - Solder Squeeze Out

Electronics Forum | Wed Feb 06 08:21:00 EST 2019 | SMTA-Bob

Over the years we have featured Defect of the Month videos on the UK smart-e-link forum. As members of SMTA Europe will be joining the forum in the coming months here is one of the defect videos created to show the solution to common problems Solder

QFN Rework Issues

Electronics Forum | Wed Feb 13 09:30:32 EST 2019 | SMTA-Joe

*UPDATE* I decided to modify the experiment slightly by forgoing my attempt to achieve reflow with the component. Instead I applied SN42 paste directly to the pad and attempted reflow of the paste by itself. The end result is as follows: Hotplate

Board Explorer Old software

Electronics Forum | Wed Feb 20 01:17:48 EST 2019 | jbuivydas

Hello, Here is the situation: A colleague is working as a production process supervision technician in the factory. He uses program called " Board explorer " and after changing the computer to a new one the license he had no longer works. A temporar


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