Zener TVS in a through-hole axial package
Its 1500W peak pulse power rating means it can absorb substantial surge energy before the clamping voltage hits 25V at peak current.
onsemi lists the ICTE-15RL4 as Obsolete. For BOM positions that still call out this exact order code, we source through our independent supply network and quote per RFQ against your quantity.
Key ratings for your protection budget
Reverse standoff voltage is 15V typical — the rail sits below this during normal operation. Breakdown minimum is 17.6V, so the diode stays off until the transient pushes past that threshold. That 25V ceiling is what the downstream circuitry sees; if your load's absolute max is lower, this part won't protect it.