Electronics Forum | Wed Jan 24 10:16:18 EST 2007 | russ
immersion silver has become my favorite finish for lead free. Seems toi have good shelf life is stored in the silversaver paper. and reflows real well. Russ
Electronics Forum | Thu Apr 27 11:36:53 EDT 2000 | PeterB
Russ, We also use 'immersion silver' and have not had any impact on our processes. In fact there are a number of benefits i.e very flat pads (as good as electroless nickel/immersion gold but much cheaper and less unfriendly to the environment), good
Electronics Forum | Mon Feb 05 07:02:11 EST 2007 | CL
ASIR, Findings for us so far: OSP- has worked well for us for single sided boards only. We have seen problems with using it on double sided reflow applications. Also, some customers have specified OSP, but are intolerant of exposed copper. Limited
Electronics Forum | Tue Aug 03 17:28:33 EDT 1999 | DLKearns
| | | I have been asked to supply a maximum shelf life for our assemblied PCB's. I realise this is dependent on so many factors- temperature, humidity, no of layers etc. But does anyone have a formulae for calculating shelf life, or does anyone know
Electronics Forum | Tue Aug 09 11:57:11 EDT 2005 | Board House
Hi Ted, I am a Sales Manager for a Circuit board Manufacture in MN. We have seen the Majority of our Customer base switch to Enig do to shelf life issues of silver and Tin. Silver, Tin & OSP all have a shelf life between 6 - 8 Mos. Enig is betwee
Electronics Forum | Thu Sep 02 10:00:29 EDT 2004 | russ
If you are concerned about shelf life and handling of raw or partially assembled PCBs use Immersion gold and hope that you don't get black pad, I still love this finish but I have been fortunate to never receive bad boards. If I understand your ques
Electronics Forum | Wed Aug 05 07:46:46 EDT 1998 | Earl Moon
| We have mixed to negative feelings about Omikron, but I beileve it is due to problems with the board fabricator rather than the process itself. When done properly, our Omikron boards have had very good solderability. However, we have had several
Electronics Forum | Wed Aug 04 12:35:15 EDT 1999 | Dave F
| | | | I have been asked to supply a maximum shelf life for our assemblied PCB's. I realise this is dependent on so many factors- temperature, humidity, no of layers etc. But does anyone have a formulae for calculating shelf life, or does anyone kno
Electronics Forum | Wed Mar 11 11:05:06 EST 1998 | Earl Moon
| I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles mak
Electronics Forum | Sun Mar 15 23:58:01 EST 1998 | Phill Hunter
| | I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles m
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