Electronics Forum: solder and paste (Page 516 of 752)

Re: Flow for 2 sided SMT - Please Repost

Electronics Forum | Mon Dec 08 14:40:08 EST 1997 | Rin Or

| First Responses Lost: Please Repost | | Looking for info on process flow for 2 sided SMT with PTH | | on the top side. | | Both sides have large SMT ICs. I don't know what the best approach is; | | Epoxy, Paste in Hole, High temp paste. | | Any in

pc board defects

Electronics Forum | Sun Sep 15 08:35:42 EDT 2002 | davef

That 60+% print defects number has been bantied around for so long in the electronic assembly business for so long that people believe that it's true. One starting point for this myth and lore is: "Where Quality Is Lost On SMT Boards" C Mangin, 'Cir

Pb free BGA voids

Electronics Forum | Tue May 02 07:19:29 EDT 2006 | billyd

Good morning all. I'm trying to find some help on my voiding issue on my lead free BGAs. I am using a Heller 8/2 zone oven, and using Qualitek solder paste. I had listened to a tech representing another solder company, who told me to make the joints

Solder wetting test for PCB's

Electronics Forum | Mon Apr 23 19:12:23 EDT 2001 | relensky

Thanks for the instructions. I was missing the reflow part... Omikron is the method our board house offers. We have been through the plating thickness problem and tin depletion conditions. Beyond those issues, I have been trying a few different n

Component soldering strength ?

Electronics Forum | Mon Jul 30 21:29:34 EDT 2001 | kennyhktan

Hello Michael & All, Thanks for the feedback. Months ago we receive a number of reject concerning one of the 0805 & 0603 chip capacitor mising (with joint remain on pad)and seriously solder joint fracture. From there I had do some investigation

Re: what's your opinion

Electronics Forum | Fri Jan 28 06:01:13 EST 2000 | k.s park

HI. Mr. Dave F First of all I appreciate your advise. Here is the answer to the question you sent. I was considering the solder inspection m/c for a long time. so i bought the LSM2 last year.i thinks it was good for me. further more Last year

Re: 0201 Capacitor Solder Printing

Electronics Forum | Mon Jan 03 18:52:13 EST 2000 | Deon Nungaray

Hi John, I don't know if you are going to have a lot of luck obtaining this information. Currently 0201's are mostly used in Asia, and reliability issues have risen using these components. The problem is obtaining a reliable solder connection with a

Re: no clean rework

Electronics Forum | Tue Aug 10 05:51:03 EDT 1999 | Gian.D

| | hello to everybody, | | we have a really satisfactory no clean process, both smt/reflow and wave soldering, but we get troubles with defects rework; | | does anybody know how to eliminate flux residues or how not to produce them during rework op

Re: Component Thermal Profiles

Electronics Forum | Tue Jun 08 10:01:34 EDT 1999 | John Thorup

| Can anyone please help me locate details on maximum allowable temperatures of components when passing through a reflow oven. | | I think I want the thermal profile for the part, or a source or standard which will allow me to check if I can safely

Solder On Gold

Electronics Forum | Sun May 16 03:38:49 EDT 1999 | Zambri

I'm running memory module product- SMT double reflow ( 12 modules per panel). I'm using the epoxy base solder paste in order to reduce the flux spattering problem onto the gold finger which could lead to the intermittent contact problem. I don't fa


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