View 50smcj-series datasheet:

® 5.0SMCJ SERIES 5000W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR WON-TOP ELECTRONICS Pb Features  Glass Passivated Die Construction  5000W Peak Pulse Power Dissipation B  11V – 440V Standoff Voltage  Uni- and Bi-Directional Versions Available D  Excellent Clamping Voltage A  Typical Response Time < 1nS F  Plastic Case Material has UL Flammability Classification Rating 94V-0 C H G E SMC/DO-214AB Mechanical Data Dim Min Max  Case: SMC/DO-214AB, Molded Plastic A 5.59 6.22  Terminals: Solder Plated, Solderable B 6.60 7.11 per MIL-STD-750, Method 2026 C 2.75 3.25  Polarity: Cathode Band Except Bi-Directional D 0.152 0.305  Marking: Device Code E 7.75 8.13  Weight: 0.21 grams (approx.) F 2.00 2.62  L