Electronics Forum: blow holes on immersion silver finish (Page 1 of 3)

Re: silver finishes on pcbs

Electronics Forum | Thu Dec 14 10:14:04 EST 2000 | PeteB

Jacqueline, Asuming you mean immersion silver: Advantages - Very flat finish compared to HASL, more easily solderable than bare copper with OSP and more process tolerant than this in our experience, reasonable shelf life, cheaper than immersion gol

Re: silver finishes on pcbs

Electronics Forum | Wed Dec 13 20:30:59 EST 2000 | Dave F

Immersion Silver PCB Surface Plating - Dennis VanBuren 14:21:24 02/01/2000 [Wudja mean "not much luck" searching the archives? What is this haggis???][Is that like saying "what is this chopped liver??"]

Pros/Cons of Gold immersion boards(solderability)

Electronics Forum | Thu May 10 19:19:41 EDT 2007 | rgduval

Wayne, I haven't seen anything indicating that Gold Immersion is necessary for lead free... However, it is my companies preferred finish for lead free assemblies. We've taken this stance for the following reasons: 1. Better solder quality on th

De-wetting on Immersion Silver finish board

Electronics Forum | Thu Aug 24 13:20:24 EDT 2000 | Murad Kurwa

One of our divisions is having this problem: - De-wetting on the smt pads and componenent termination on the bottom side after top side procssed through reflow. Board finish is immersion silver. ? Any recommendation on what we should check & verify

Re: silver finishes on pcbs - what about the wave?

Electronics Forum | Fri Dec 15 08:00:57 EST 2000 | Pete B

John, We regularly wave solder electroless silver finished boards (Alpha Level)with mixed SMD and through hole parts and do not have any problems. We have changed a number on PCB's from HASL to electroless silver, mainly for the benefits at SMD whe

PbF PCB finish

Electronics Forum | Thu Jan 25 04:55:08 EST 2007 | greg york

Strange as we have had huge problems with Silver in Many different Assembly houses. Mainly with Nitric Acid based Silvers causing blow holes, non wetting and even the Nitric etching away the tracks on fine boards. It has been one of the main problem

Re: De-wetting on Immersion Silver finish board

Electronics Forum | Fri Aug 25 05:23:46 EDT 2000 | Wolfgang Busko

Hi Murad, like with many other questions it�s hard to judge without seeing the effect. Assuming that this site you�re talking about is well equiped with knowledge and that they handle their processes normally to everybody�s satisfaction it�s obvious

Ni/Au > Immersion Tin/Silver PCB finish

Electronics Forum | Thu Feb 22 16:40:23 EST 2007 | mika

One of our customers that always was going for Ni/Au surface finish on RoHS PCB and our processs was adjusted for that, "whithout any problem". Recently they decided to switch to another surface finsh: PbFree HASL. What is that? Imersion tin/silver?

Oxidation on PCB's

Electronics Forum | Sun Aug 03 08:27:41 EDT 2008 | davef

IPC-4553, Specification for Immersion Silver Plating for Printed Circuit Boards, 1.4.1 Solderability. This primary function of IAg is to provide a solderable surface finish, suitable for all surface mount and through-hole assembly applications and wi

Pad dissolution on Thick PCB's

Electronics Forum | Wed Apr 26 03:32:29 EDT 2006 | saaitk

Hi all, Has anyone any experience they can share with regard to pad dissolution on PTH's on thick boards. We are using lead free SAC305 on both OSP and Immersion silver finishes and are experiencing difficulties when removing and replacing connector

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