The SMCJ90CAE3/TR13 is a bidirectional Zener TVS diode from Microchip Technology, rated for 1500W peak pulse power (10/1000µs waveform) with a 90V reverse standoff voltage and 100V minimum breakdown voltage. It clamps transients to a maximum of 146V at 10.3A peak pulse current, making it a solid choice for protecting 90V DC rails or 60V AC lines in industrial, telecom, and automotive environments.
Peak pulse power and clamping voltage
For a 90V rail, the 146V clamping voltage means the protected circuit must survive a 146V spike for the duration of the pulse; if your downstream components are rated for 150V or less, you need to check the margin. The 10.3A peak pulse current at the clamping voltage gives you the dynamic resistance slope — useful for estimating clamping at lower currents.
Housed in a DO-214AB (SMC) surface-mount package, the SMCJ90CAE3/TR13 is a standard footprint that reflows well with typical lead-free profiles.
The base product number is SMCJ90; the '' suffix indicates Microchip's high-reliability screening, which often means tighter parametric limits or burn-in.