What this TVS diode handles and where it fits
The SMCJ64CAE3/TR13 is a bidirectional Zener TVS diode from Microchip Technology, rated for 1500 W (1.5 kW) peak pulse power at 10/1000 µs waveform — enough to clamp surges on 48 V telecom rails, 24 V industrial supplies, and general-purpose DC buses without folding back the protected circuit. Its 64 V reverse standoff voltage means the diode stays off below that level, so a nominal rail sees no leakage penalty during normal operation. The clamping voltage peaks at 103 V, which keeps downstream semiconductors inside their avalanche rating for most common transient events.
Peak pulse current and temperature range
The device can handle a peak pulse current of 14.6 A under the 10/1000 µs test condition, which is the typical waveform used to compare TVS diodes across suppliers.
The base product number SMCJ64 covers the full family; the CAE3 variant adds the bidirectional and high-reliability screening options.