Clamping parameters and the protection window
The 1.5KE400CA/B: Its 342 V reverse standoff voltage means the protected line sees no leakage at normal operating levels up to that point; when a transient exceeds 380 V typical breakdown, the device clamps at 548 V maximum while shunting 2.8 A of peak pulse current. This clamping window — 380 V to 548 V — defines the voltage the downstream circuitry must survive during the event. The -55°C to 150°C junction temperature range covers industrial and outdoor equipment where the ambient sees wide thermal swings; the bidirectional configuration (single channel) protects signal pairs that swing above and below ground, such as RS-485 or isolated power rails.
Supplied in a DO-201AA (DO-27) axial-lead package, through-hole mounted. The axial leads handle the thermal cycling of the soldering process without stress on the die bond.
Active production, sourced per RFQ
YAGEO lists the 1.5KE400CA/B as an active product.