Transient suppressor for 26V rails
The SMCJ26CAE3/TR13 is a Zener-type TVS diode from Microchip Technology, rated for 1500W peak pulse power per the 10/1000 µs waveform. Its 26V reverse standoff voltage means it sits across a 24V nominal rail without conducting leakage, then clamps transients at 42.1V max to protect downstream silicon. This is a single bidirectional channel — one device handles both positive and negative surges, which saves board space and reduces component count on bipolar signal lines or AC-coupled inputs.
Clamping voltage and pulse current
At the 35.6A peak pulse current, the clamping voltage holds at 42.1V max. That 16.1V headroom above the 26V standoff is the margin your downstream regulator or IC must survive — check the absolute maximum rating of the protected device against this clamp level. The breakdown voltage minimum is 28.9V, so the part starts conducting just above the 26V standoff.