1.5 kW TVS for 171 V rails — what the ratings mean
The 1.5KE200AHB0G: Its 171 V reverse standoff voltage (working voltage) means it sits across a 171 V DC bus without conducting leakage; the breakdown voltage range starts at 190 V, and clamping is specified at 274 V maximum at the 5.7 A peak pulse current. The DO-201AA (DO-27) axial package is through-hole, suited for point-to-point wiring or PCB mounting with adequate copper pad area for thermal sinking.
Automotive qualification and deployment
AEC-Q101 qualification certifies this diode for automotive stress levels — temperature cycling, high-temperature reverse bias, and ESD robustness per the automotive discrete semiconductor standard. The 'A' in the order code signals the automotive grade, meaning it is screened for use in engine control units, transmission modules, or body controllers where the ambient temperature and transient environment exceed commercial-grade limits. The 5.7 A peak pulse current at the 10/1000 µs waveform is the maximum the diode can handle once; repetitive surges must stay within the pulse derating curve.