Electronics Forum: bismuth reflow (Page 2 of 3)

Process Change

Electronics Forum | Thu Jun 03 09:40:20 EDT 1999 | Ryan Jennens

In a month or so, we will be getting an in-line x-ray inspection machine. It will require that we solder our most comlicated side (normally top) first. This is opposite to our process now where we solder our passive (bottom) side first. We cannot

Re: BGA Pad Dressing After Removal Method

Electronics Forum | Thu Jun 04 12:05:43 EDT 1998 | Anthony

Dear Dave, I have a "possible" solution to your problem, though I have never tried it myself. If you're trying to come up with a non-abrasive technique for removing solder-keep reading. If it's a faster method you desire, do yourself a favor and hi

Reflow soldering issues

Electronics Forum | Mon Feb 12 11:13:12 EST 2007 | davef

Q1. If I go to the Pb-free solder paste, is it necessary that I have to change my reflow oven OR just by changing with respect to solder paste specification, I can reach my goal? A1. It depends on your current oven. Some ovens can meet the higher t

Lead Free Process

Electronics Forum | Fri Jul 06 12:07:07 EDT 2001 | nwyatt

I have been researching lead-free paste for a while now and I will share with you what I can. Firstly, SnAgCu seems to be the common industry choice. It really depends on your application - the cell phone/pda sector is primarly using different comb

Lead Free and Leaded Process Mix

Electronics Forum | Mon Jun 27 09:09:19 EDT 2005 | Bob R.

We've all been soldering Pb free parts for a couple decades. All your surface mount capacitors have probably had a Sn finish for years. Whenever one of our parts with a SnPb finish converts for Pb free we have the manufacturing site do a small buil

Wrinkle solder ball on BGA PKG

Electronics Forum | Sat Dec 30 04:23:50 EST 2023 | 012band

I have used LTS (Sn57.6%Bi0.4%Ag) solder balls for soldering on Ni/Au pads, and I have observed a wrinkle pattern on the ball surface. When you attempted soldering on CuOSP substrate pads under the same conditions, the surface appeared normal. Additi

Re: Process Change

Electronics Forum | Thu Jun 03 10:09:59 EDT 1999 | Earl Moon

| In a month or so, we will be getting an in-line x-ray inspection machine. It will require that we solder our most comlicated side (normally top) first. This is opposite to our process now where we solder our passive (bottom) side first. We cann

Re: Process Change

Electronics Forum | Thu Jun 03 10:53:09 EDT 1999 | Ryan Jennens

| | In a month or so, we will be getting an in-line x-ray inspection machine. It will require that we solder our most comlicated side (normally top) first. This is opposite to our process now where we solder our passive (bottom) side first. We ca

Re: Process Change

Electronics Forum | Thu Jun 03 12:31:30 EDT 1999 | Dave F

| | | In a month or so, we will be getting an in-line x-ray inspection machine. It will require that we solder our most comlicated side (normally top) first. This is opposite to our process now where we solder our passive (bottom) side first. We

Re: Process Change

Electronics Forum | Thu Jun 03 13:00:16 EDT 1999 | Earl Moon

| | | In a month or so, we will be getting an in-line x-ray inspection machine. It will require that we solder our most comlicated side (normally top) first. This is opposite to our process now where we solder our passive (bottom) side first. We


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