1500W peak pulse, 12.4V breakdown – Mosorb™ Zener TVS
The 1N6274ARL4 is a Zener-type TVS diode from onsemi's Mosorb™ series, rated for 1500W peak pulse power at 10/1000 µs waveform. It clamps at 18.2V max (at Ipp) and has a reverse standoff of 11.1V typical, making it a fit for protecting 12V rails against transients in general-purpose power supplies, industrial controls, and telecom equipment. The axial package handles thermal dissipation of repeated surges, and the junction temperature range of -65°C to 175°C covers extreme operating environments.
Obsolete – sourcing path for BOM continuity
onsemi lists the 1N6274ARL4 as Obsolete. Because this part is EOL, any available stock carries date codes from the last production run. We can source and quote against your BOM quantity — confirm the required quantity and target date-code window at quote time.
Unidirectional, no power-line protection – application fit
This is a single unidirectional channel — it clamps only one polarity, so it suits DC rails where the positive line needs protection against overvoltage spikes. Power Line Protection is not supported, meaning it is not intended for AC mains or bidirectional bus clamping.