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Saponifier effect on Al pad

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#63441

Saponifier effect on Al pad | 6 January, 2011

Hello~

I need your expoertised experience.

Do you have any experience of Saponifier influence on Al pad for wire bonding.

We have a porblem of no wire bonding in use of saponifier in order to remove clean type flux.

thanks in advance

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#63452

Saponifier effect on Al pad | 7 January, 2011

Hi,

Detergent/saponifiers have indeed the potential to tarnish aluminum. This is due to the high alkalinity of the chemistry (pH 10-12).

Things you can do to minimize the effect is:

A) Limit the exposure time of the Al with the chemistry. B) Reduce the saponifier concentration.

Also make sure you use the correct DI/saponifier temperature (usually between 140-160F) Talk to your supplier they know the product the best they will be able to give you recommendations.

Hope this helps, Patrick http://www.interfluxusa.com

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#63466

Saponifier effect on Al pad | 9 January, 2011

Hi Patrick,

Thank you so much for your good advice.

I will follow your guideline.

Thank you again.

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#63468

Saponifier effect on Al pad | 9 January, 2011

Hello Patrick,

thank syou for your good advice and guideline. I will trto followup your suggestion. Thanks again.

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