Oxidation on PCB's

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Has anyone come across a standard or study (JEDEC, IPC) whe... - Aug 01, 2008 by scotceltic

IPC-4553, Specification for Immersion Silver Plating for Pri... - Aug 03, 2008 by davef

Silver saver paper will work as well. Most board houses sli... - Aug 04, 2008 by Real Chunks

Avoid cardboard boxes as well. They are sulfur bearers, and... - Aug 04, 2008 by blnorman

Hello,man,we are a PCB manufacturer.I can ask our engineer a... - Aug 08, 2008 by hanward PCB

Our engineer said when we deliver silver coated PCB to custo... - Aug 08, 2008 by hanward PCB

scotceltic

#55790

Oxidation on PCB's | 1 August, 2008

Has anyone come across a standard or study (JEDEC, IPC) where it has the recommended shelf life outside of a dry box for immersion silver coated PCB's to prevent oxidation from affecting the soldering process (Both reflow and Wave). I know it will be dependent on the environment they are kept.

Thanks.

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davef

#55812

Oxidation on PCB's | 3 August, 2008

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 with an appropriate shelf life. The deposit has demonstrated the ability to meet a shelf life of 12 months per J-STD-003 and industry data, when handled per this specification's requirements.

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Real Chunks

#55819

Oxidation on PCB's | 4 August, 2008

Silver saver paper will work as well. Most board houses slip a sheet between your boards when they send them to you. Keep this paper with the boards and keep them sealed if possible.

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blnorman

#55823

Oxidation on PCB's | 4 August, 2008

Avoid cardboard boxes as well. They are sulfur bearers, and silver has an affinity to form silver sulfide.

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hanward PCB

#55917

Oxidation on PCB's | 8 August, 2008

Hello,man,we are a PCB manufacturer.I can ask our engineer and reply you.

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hanward PCB

#55918

Oxidation on PCB's | 8 August, 2008

Our engineer said when we deliver silver coated PCB to customer,we will use vacuum airbag packing with desiccant inside.And when you receive it,keep them in warehouse below 24 centigrade.If you have opened the packing,it seems no good way.

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