Electronics Forum: 105 (Page 9 of 13)

Re: Solder on gold finger

Electronics Forum | Mon Jul 27 21:10:10 EDT 1998 | D.Lange

| Hi, | Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subj

Re: Philips FCM

Electronics Forum | Thu Jul 23 12:54:18 EDT 1998 | Brad Kendall

| I am considering of Philips FCM for the next production. | But I have heard a rumour saying this machine is not capable for checking the lead polarity due to the laser scan system. | i.e. SOT might be populated in wrong direction. | Can somebody ad

Re: Philips FCM

Electronics Forum | Mon Jul 27 23:20:14 EDT 1998 | Vincent Robert

| | I am considering of Philips FCM for the next production. | | But I have heard a rumour saying this machine is not capable for checking the lead polarity due to the laser scan system. | | i.e. SOT might be populated in wrong direction. | | Can som

Re: Philips FCM

Electronics Forum | Thu Jul 23 15:19:52 EDT 1998 | Timm

| | I am considering of Philips FCM for the next production. | | But I have heard a rumour saying this machine is not capable for checking the lead polarity due to the laser scan system. | | i.e. SOT might be populated in wrong direction. | | Can som

Wave Soldering Ceramic PCB's

Electronics Forum | Wed Aug 08 15:31:30 EDT 2001 | johnw

Hi folk's, I'm looking for some hint's here. Got a board from the customner that is ceramic, and it's 2.2mm thick. I've got a couple of RF connectors that I need to solder, problem is I can't get any flow up the PTH's. The pin's are gold on the conn

Saponifier Concentration Measurement

Electronics Forum | Mon Aug 26 12:44:42 EDT 2002 | dragonslayr

Scott- I've used both methods, titration and refractometer. Both are simple to perform. Titration is a simple, high school science class type process. Follow the chemical mixes accurately and then compare the resulting color change of liquid to a cha

Heller 1088 Reflow Oven Conveyor Adjust

Electronics Forum | Thu Dec 20 14:04:35 EST 2001 | Dreamsniper

Hi Marc Definitely we will call you ! But as planned, we will be trying to move the fixed conveyor starting this morning and I think we need the two lead screws at both front and rear machined. We rang our local supplier here down under (australia) w

Wave soldering profiling

Electronics Forum | Wed Jun 18 19:26:39 EDT 2003 | gregoryyork

Rules of thumb :- 1. Never over flux - not necessary and waste's money. Never top flux neither 2. Top Board temp. around 70C - 105C or there about's pending what laminate you use. Obviously the more flux you apply the higher heat required/denser PC

Porosity in Good Plating

Electronics Forum | Fri Jul 04 21:09:04 EDT 2003 | ramanandkini

I have a CEM-1 PCB board with 35 microns copper. This is PCB is finished with SMOBC+HALS. We do solder SMT LEDs, but till date we do not have problems that you have listed. The LEDs are good & bright. It even passed high & low temp cycle tests (-40 t

Has anyone looked into Vacuum storage on moisture sensitive devi

Electronics Forum | Tue Aug 19 09:09:15 EDT 2003 | D Peter

After a few problems and time constraints on baking moisture sensitive devices, we are looking at solutions to storage rather than going after a rebaking solution. One thing that always bothered me about baking was the oxidation on the lead finish,


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