SM Package 3-Lead TO257 (Reference LTC DWG # 05-08-1360 Rev Ø) .140–.150 (3.56–3.81) .410–.420 (10.41–10.67) .190–.200 (4.83–5.08) .035–.045 (0.89–1.14) .645–.655 .527–.537 (16.38–16.89) (13.39–13.64) .410–.430 (10.41–10.92) .500–.750 (12.70–19.05) A A .070 .100 (2.54) BSC .025–.035 (0.64–0.89) Øb Øb 3 PLACES SECTION A-A .120 (3.05) BSC SM3 (TO257) REV Ø 0708 NOTES: 1. ALL DIMENSIONS IN INCHES (MILIMETERS) 2. DIMENSION Øb APPLIES TO PLATED PART Øb: .025–.040 (0.64–1.02)