- Dramatically improve heat resistance property of SAC base alloy
- Specially best for against crack on big chip devices
- SJM-40 has same strength as SAC305 initial stage even after 2000 cycles
Alloy: SJM-40
Alloy Metal: Sn-4,0Ag-2.0Bi-3.0Sb
Temperature: 217° - 220°C
Flux Classifiction: ROL1
Flux: SR-LA
Flux %: 3,5
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