1500 W bidirectional transient suppressor for 15 V rails
It delivers 1500 W peak pulse power per the 10/1000 µs waveform, with a clamping voltage of 32.5 V at the peak pulse current of 308 A (8/20 µs). The bidirectional configuration makes it suitable for AC lines or bipolar supply protection where polarity is not fixed.
The minimum breakdown voltage is 16.7 V, which gives a 1.7 V margin above the 15 V standoff — enough to avoid nuisance triggering from normal rail ripple or load transients. For a 15 V rail with downstream components rated at, say, 30 V absolute maximum, this clamp level leaves a guard band; for a 12 V rail you would step down to the SMCJ12A or SMCJ12CA.
Peak pulse current and waveform context
The 308 A peak pulse current is specified with the 8/20 µs waveform, a common industrial surge shape. The 1500 W rating uses the longer 10/1000 µs waveform — the part's energy-handling capability is waveform-dependent, so when comparing against other TVS diodes make sure the test conditions match. Power line protection is marked as 'No', meaning this device is intended for signal or low-voltage DC bus protection, not for direct AC mains clamping.