TVS diode for 130V rail protection
The SMCJ130A-13-F: It clamps transients on a 130V nominal rail to 209V maximum, with a breakdown voltage range starting at 144V. Housed in the DO-214AB (SMC) surface-mount package, it handles a peak pulse current of 7.2A at the clamping point.
What the clamping specs mean for your rail
A 130V reverse standoff voltage means this diode stays off below 130V — it does not load the line during normal operation. The 144V minimum breakdown ensures it starts conducting before the downstream components see overvoltage, and the 209V maximum clamp limits the spike the protected device endures. The 1500W peak pulse rating at 10/1000µs is the standard TVS metric — it tells you the diode absorbs a 1ms surge without failing. For shorter transients (like ESD), the effective power capability is higher; for longer events, derate accordingly.
