Transient suppressor for 9.4V rails — peak pulse rating and clamping
The 1N6272A is a unidirectional Zener TVS diode from the onsemi Mosorb™ series, rated for 1500W peak pulse power (1.5kW) at 10/1000 µs waveform. With a reverse standoff voltage of 9.4V and a maximum clamping voltage of 15.6V at the rated peak pulse current, it is designed to protect 9V or 10V DC power rails from transient overvoltage events such as inductive load switching or lightning-induced surges.
Obsolete — sourcing reality and replacement planning
onsemi has marked the 1N6272A as Obsolete. For a BOM line that requires this exact order code, the supply path is limited to verified distributor inventory, broker stock, or surplus lots — no last-time-buy window remains open. A design-in replacement should be identified and qualified before the existing stock is exhausted.
Package and temperature range for through-hole board fit
The 1N6272A is supplied in a DO-201AD axial-lead through-hole package, with a bulk (tube or loose) packaging option. The operating junction temperature range spans -65°C to +175°C, making it suitable for industrial or automotive environments that see wide thermal swings — though the obsolete status limits its use to legacy designs or repair stock.
Breakdown voltage and unidirectional configuration
The minimum breakdown voltage at 1 mA is 10.5V. The device has a single unidirectional channel and does not include power line protection features — it is intended for signal or low-voltage DC rail clamping, not for AC mains or high-voltage bus protection.