View smbj5.0 datasheet:

SMBJ5.0 thru 188CA Surface Mount Transient Voltage Suppressors Peak Pulse Power 600W Stand-off Voltage 5.0 to 188V Features Plastic package has Underwriters Laboratory Flammability Classification 94V-0 Low profile package with built-in strain relief for surface mounted applications Glass passivated junction Low incremental surge resistance, excellent clamping capability 600W peak pulse power capability with a 10/1000us waveform, repetition rate (duty cycle): 0.01% Very fast response time High temperature soldering guaranteed: 250oC/10 seconds at terminals Mechanical Data Case: JEDEC DO-214AA(SMB J-Bend) molded plastic over passivated junction Terminals: Solder plated, solderable per MIL-STD-750, Method 2026 Polarity: For unidirectional types the band