View smaj5.0 datasheet:

SMAJ5.0 thru 188CA Surface Mount Transient Voltage Suppressors Peak Pulse Power 400W Stand Off Voltage 5.0 to 188V Features Plastic package has Underwriters Laboratory Flammability Classification 94V-0 Optimized for LAN protection applications Ideal for ESD protection of data lines in accordance with IEC 1000-4-2 (IEC801-2) Ideal for EFT protection of data lines in accordance with IEC 1000-4-4 (IEC801-4) Low profile package with built-in strain relief for surface mounted applications Glass passivated junction Low incremental surge resistance, excellent clamping capability 400W peak pulse power capability with a 10/1000us wave- form, repetition rate (duty cycle): 0.01% (300W above 78V) Very fast response time High temperature soldering guaranteed: 250o