Automotive-grade transient suppression for 12V rails
The 1.5KE10CH: Its 8.1V reverse standoff voltage and 9V minimum breakdown voltage make it a natural fit for protecting 12V automotive power buses — the clamp triggers before the downstream electronics see a load-dump or inductive kick. It is rated for continuous junction temperatures from -55°C to 175°C, covering the under-hood ambient range with margin.
Clamping performance and pulse current capability
For a 12V system that sees a 150V load-dump transient, the TVS shunts the energy and holds the rail below 15V — well within the 36V abs-max of most automotive-rated ECUs and sensors. The 1500W peak pulse rating is the product of clamp voltage and peak current at the test waveform. In a real application, the actual power dissipated depends on the surge duration and source impedance; the 10/1000µs waveform is a standard telecom surge, but the same device handles shorter automotive transients (ISO 7637-2 pulses) with higher peak current capability.
Package and board integration
Housed in the DO-201AA (DO-27) axial-lead package, with the DO-201 as the supplier device package designation. Through-hole mounting suits point-to-point wiring, terminal blocks, or PCB layouts where the axial body is soldered into plated through-holes.
Lifecycle and supply posture
The 1.5KE10CH is listed as Active — Taiwan Semiconductor continues to manufacture this part with no announced end-of-life.