Transient voltage suppressor for 24 V rails
The 1.5KE24CA A0G: Its 20.5 V reverse standoff voltage sits below the rail, so it stays out of circuit during normal operation, and the 22.8 V minimum breakdown triggers before the downstream silicon sees damaging overvoltage.
What the voltage ratings mean for your rail
The 20.5 V reverse standoff (V_RWM) is the maximum continuous DC voltage the TVS can sit across without conducting leakage current. For a 24 V nominal rail, this provides margin — the diode holds off the steady-state supply and only activates on a transient. The peak pulse power derates above 25°C, so at 125°C ambient the effective power handling drops to roughly 75% of the 1500 W rating — a factor to budget in high-temperature enclosures.
Package and board fit
The DO-201AA (DO-27) axial package with through-hole mounting suits point-to-point wiring or PCB layouts that need a rugged, replaceable protection device. The DO-201 suffix in the supplier device package confirms the body and lead dimensions match the standard DO-201 footprint. Packaged in Tape & Box (TB) — the A0G suffix designates the packaging option, not a functional variant. The base product number 1.5KE24 covers the unidirectional and bidirectional versions; the CA suffix in 1.5KE24CA marks this as the bidirectional channel.
Sourcing and compliance
Rated for General Purpose applications, the device is suitable for overvoltage clamping in power supplies, industrial controls, and automotive auxiliary circuits.