Thyristor Semiconductor Products Page 14 Thyristor

2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/14 Teccor brand Thyristors Lead Form Dimensions TO-220 Type 51 - R or L Package Replaces RCA 6249 A C MT2 / Anode Gate B Ref Only Mounting Tab Common to MT2 / Anode for Non-isolated R Package MT1 / Cathode Dimension Inches Millimeters Min Max Min Max A 0.320 0.340 8.13 8.64 B 0.190 4.83 C 0.795 0.850 20.19 21.59 TO-220 Type 52 - R or L Package A C Gate / Trigger MT2 / Anode MT1 / Cathode B Mounting Tab Common to MT2 / Anode for Non-isolated R Package D Dimension Inches Millimeters Min Max Min Max A 0.169 0.189 4.29 4.80 B 0.040 0.060 1.02 1.52 C 0.250 6.35 D 0.110 0.170 2.79 4.32 TO-220 Type 53 - R or L Package Mounting Tab Common to MT2 / Anode for Non-isolated R Package MT1 / Cathode MT2 / Anode Gate / Trigger MT2 / Anode A D C B 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 TO-220 Type 54 - R Package Replaces Motorola Form 4, G.E. Type 4, RCA 6206 A MT2 / Anode Gate MT1 / Cathode B Dimension Inches Millimeters Min Max Min Max A 0.040 0.070 1.02 1.78 B 0.500 12.70 Lead Form Dimensions (continued)

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