Device overview and key specs
The 1.5KE350CH: Housed in a DO-201AA (DO-27) axial-lead through-hole package, it handles junction temperatures from -55°C to 175°C — the wide thermal margin suits it for engine-bay or industrial environments where ambient heat spikes.
Automotive qualification and deployment
AEC-Q101 qualified, meaning this part meets the automotive-grade stress and reliability screening for discrete semiconductors — temperature cycling, high-temperature reverse bias, and ESD robustness are tested to the standard. The -55°C to 175°C operating junction range covers under-hood and transmission-mounted electronics where ambient temperatures exceed 125°C. The bidirectional configuration (one channel) protects against both positive and negative transients on a single line.