Thyristor Semiconductor Products Page 15 Thyristor

2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/14 Teccor brand Thyristors Lead Form Dimensions TO-220 Type 55 - R or L Package Replaces G.E. Type 5 Mounting Tab Common to MT2 / Anode for Non-isolated R Package MT1 / Cathode MT2 / Anode Gate / Trigger C B A MT2 / Anode Dimension Inches Millimeters Min Max Min Max A 0.065 0.095 1.65 2.41 B 0.353 0.433 8.97 11.00 C 0.115 0.130 2.92 3.30 TO-220 Type 56 - R or L Package Replaces G.E. Type 6, Motorola Lead Form 3, RCA 6221 Dimension Inches Millimeters Min Max Min Max A 0.570 0.590 14.48 14.99 B 0.120 0.130 3.05 3.30 C 0.172 0.202 4.37 5.13 Mounting Tab Common to MT2 / Anode for Non-isolated R Package MT1 / Cathode A C MT2 / Anode Gate / Trigger MT2 / Anode B TO-220 Type 57 - R Package Similar to TO-66, Gate-Cathode Reversed TO-220 Type 58 - R or L Package Dimension Inches Millimeters Min Max Min Max A 0.175 4.45 B 0.542 0.582 13.77 14.78 C 0.167 0.207 4.24 5.26 D 0.355 0.395 9.02 10.03 MT1 / Cathode C Gate MT2 / Anode B A Dimension Inches Millimeters Min Max Min Max A 0.040 0.070 1.02 1.78 B 0.570 0.590 14.48 14.99 C 0.340 0.422 8.64 10.72 Mounting Tab Common to MT2 / Anode for Non-isolated R Package MT1 / Cathode Gate MT2 / Anode A D C B MT2 / Anode Lead Form Dimensions (continued)

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