Transient suppression for 342 V rails
The 1.5KE400CA: When the line exceeds the breakdown voltage (380 V min), the device shunts the surge to ground, clamping at 548 V maximum under a 10/1000 µs waveform. The bidirectional configuration means a single device protects both polarities — useful on AC lines or floating DC buses where polarity reversal is possible.
DO-201 axial package and mounting
Housed in a DO-201AA / DO-27 axial-lead package (supplier device package DO-201), the 1.5KE400CA is a through-hole part. The axial leads suit point-to-point wiring, terminal blocks, or PCB through-holes with standard 0.040-inch diameter holes. The junction operates from -55°C to 175°C, covering industrial and some automotive under-hood environments.