Pb-Sn alloy - Chemical cleaning

Material Name: Pb-Sn alloy
Recipe No.: 8204
Primary Chemical Element in Material: Pb
Sample Type: Bulk
Uses: Cleaning
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Chemical cleaning
Etchant (Electrolyte) Composition: x...NH4OH, conc. Note: The volume/quantity was not shown in the referenced article and is therefore designated as an "x".
Procedure (Condition): Time: 1-2 min, temperature: RT.
Note: Pb-Sn #63 alloying 2% Ag used in device and package assembly of electronic devices. Solution used to clean surfaces prior to and after use.
Reference: Perrin Walker, William H Tarn: Handbook of Metal Etchants, CRC Press, Boca Raton, Florida, USA, 1990, pp. 1157-1158.














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