Full Site - : dewetting issue on gold immersion finish (Page 10 of 13)

Re: Specifying Pcb Format/Construction. Help!!

Electronics Forum | Mon Apr 26 16:14:08 EDT 1999 | John W

| Hi Murray! | | Justin pretty much summed things up...covered all the points. So I'm just gonna give you my preference of what I like other than HASL finish. | | Electroless Nickle/Immersion Gold...nice flat pads...hmmmmmmm, Steve likes flat pads.

Re: Finishing myth ?

Electronics Forum | Fri May 15 21:59:42 EDT 1998 | Earl Moon

| Hi, | There has been a lot of disputes in our company | about changing present HASL to another Finishing | which can provide more flatter pad surface in fine | pitch applications. ( perhaps Ni/Au, OSP ) | The target is to reduce solder defects, t

Re: Specifying Pcb Format/Construction. Help!!

Electronics Forum | Mon Apr 26 14:04:59 EDT 1999 | Steve Gregory

Hi Murray! Justin pretty much summed things up...covered all the points. So I'm just gonna give you my preference of what I like other than HASL finish. Electroless Nickle/Immersion Gold...nice flat pads...hmmmmmmm, Steve likes flat pads. OSP's hav

RMA flux affecting surface tension

Electronics Forum | Tue Aug 26 12:52:04 EDT 2008 | circleprime

I have recently started to use RMA flux (customer requirement) for some of our projects. I am finding that some of my BGAs are slightly off. Not enough to be rejected but enough to cause concern. In the past I have been able to rely on the surface te

Re: HASL Plating Thickness

Electronics Forum | Wed Jun 28 12:37:05 EDT 2000 | Brian W.

HASL plating, by its very nature, is inconsistent in terms of thickness and consistency. The plating varies from spot to spot on the pad, as well as pad to pad. This will wreak havoc on your screen printing process and your placement. From talking

Reflow of 0402 capacitors

Electronics Forum | Thu Mar 08 12:40:54 EST 2001 | Ralph Merk

We are currently using 0402 resistors and capacitors in our production process. Our equipment is as follows: - DEK 265 - Siemens S25/F5 - Vitronics XPM520(5 zones) - 2% silver solder Alpha WS678 The problem is that randomly some 0402 capacitors are

Re: BS

Electronics Forum | Mon Aug 28 12:41:35 EDT 2000 | JAX

MoonMan, I'll take a crack at the list. Feel free to answer the ones I don't! 1. Solderability is a parameter which indicates how well a component can be soldered. As far as Solder Termination Coatings go, here are some up�s and down�s of a few. Ha

Re: Specifying Pcb Format/Construction. Help!!

Electronics Forum | Tue Apr 27 05:04:50 EDT 1999 | Charles Stringer

| Hi Murray! | | Justin pretty much summed things up...covered all the points. So I'm just gonna give you my preference of what I like other than HASL finish. | | Electroless Nickle/Immersion Gold...nice flat pads...hmmmmmmm, Steve likes flat pads.

Solder Paste for Thermal Cycling application (-40 to 150 Degree Celcius)

Electronics Forum | Thu Dec 07 17:25:58 EST 2017 | davef

Help me understand your issue better ... Are you looking to: * Improve your products that are used for thermal cycling testing of products of other companies? * Change your production materials so that you pass thermal cycling testing of your produ

Lead Free ...

Electronics Forum | Thu Sep 02 10:24:35 EDT 2004 | dj_jago

Greetings from the UK: I have been quite fortunate to lead (no pun intended) our company towards lead free sooner rater than later. One of our customers produces a product which is refurbushed every 6 months or so and sent back into the market. A


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