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IPC-4552A: Performance Specification for Electroless ...

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IPC-4552APerformance Specificationfor Electroless Nickel/Immersion Gold (ENIG)Plating for Printed BoardsDeveloped by the Plating Processes Subcommittee (4-14) of the Fabrication Processes Committee (4-10) of IPCUsers of this publication are encouraged to participate in the development of future :IPCSupersedes:IPC-4552 with Amendments1&2 December 2012IPC-4552 October 2002 Table of Contents1 of Scope ........................................ ....... Size for Thickness Measurement ............ ........................................ .................... Nickel Reducing Agents Phosphorus Content ........................................ ...... ........................................ ....................... of Precedence.

2.7.2 Hyperactive Corrosion Deposit ..... 3 2.7.3 Selective Annular Ring Dewetting (SAD) ..... 3 3 REQUIREMENTS ... APPENDIX 8 Evaluation of Electroless Nickel Corrosion Due to Immersion Gold Plating, Using 3000X Magnification After Gold Stripping..... 77 APPENDIX 9-A Cyanide Gold Stripping for ...

  Evaluation, Corrosion

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