1500W Zener TVS in a DO-201AD axial package
The 1N6376 is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, rated for 1500W peak pulse power at 1ms. It clamps at 21.2V max when the surge current hits, protecting downstream circuitry from transients on a 12V rail. The axial through-hole package suits board layouts where a robust mechanical anchor is preferred over surface-mount — common in power supplies, industrial controls, and telecom line cards.
Voltage window and temperature range
The reverse standoff voltage is 12V, meaning the diode stays off below that level. Breakdown starts at 14.1V min, and clamping is guaranteed at 21.2V max at the rated peak pulse current — a tight window that keeps the protected bus within safe limits during a surge. Junction temperature range spans -65°C to 175°C, so it handles cold-start conditions in outdoor gear and the heat inside an engine bay or industrial enclosure without derating concerns.
onsemi lists the 1N6376 as Obsolete. No direct successor is published by the manufacturer. For BOM lines that still call out this exact order code, the only supply path is through independent distribution or surplus stock. We source the 1N6376 against your RFQ quantity. The axial through-hole package is a standard form factor, so cross-shipping from multiple inventory sources is straightforward.