SR-LA SJM-40 3,5% 0,8mm 0,5kg Spule/ Reel

SR-LA SJM-40 3,5%  0,8mm  0,5kg Spule/ Reel

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SR-LA SJM-40 3,5% 0,8mm 0,5kg Spule/ Reel

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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.