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Soldering to Chrome plated pads

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#60722

Soldering to Chrome plated pads | 23 December, 2009

Is it possible to reflow leaded or lead-free solder paste onto chrome plated pads?

Thanks.

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#60723

Soldering to Chrome plated pads | 23 December, 2009

We doubt that you can successfully solder to chrome

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#60724

Soldering to Chrome plated pads | 23 December, 2009

Can you etch where you want to solder to? But you would need harsh chemicals to do that.

The whole point of chrome is to not chemically react.

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#60726

Soldering to Chrome plated pads | 23 December, 2009

Thanks for the replies. I haven't soldered to a chrome plated pad in the past and have my doubts so thought I'd ask here. Our customer supplied the material and for some reason decided to change the plating to chrome. We only found out about this change after back and forth communication. Sometimes I feel like Sherlock Holmes.

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#60727

Soldering to Chrome plated pads | 24 December, 2009

You can weld (spot) to chrome. Maybe you could weld a nickel tab to the chrome part?

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#60734

Soldering to Chrome plated pads | 24 December, 2009

isd.jww:

First, the original poster is talking about pads, not component leads.

Second, you're correct that chrome plated component leads can be attached by spot welding or crimping a solderable tab to the lead and then soldering the tab to the board.

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#60741

Soldering to Chrome plated pads | 28 December, 2009

That's not going to work in this case. The substrate has very small pads designed for a micro BGA die. Thanks for the suggestion though.

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#60742

Soldering to Chrome plated pads | 28 December, 2009

How about silver epoxy? Could you use a PnP with a dispenser?

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