J-STD-005A: Requirements for Soldering Pastes
This standard lists requirements for qualification and characterization of solder paste. It references test methods and criteria for metal content, viscosity, slump, solder ball, tack and wetting of solder pastes. Additional support is provided in IPC-HDBK-005, Guide to Solder Paste Assessment (not included with purchase of this standard). Supersedes J-STD-005.