Bidirectional and thermally rugged
The 1.5KE220CA/B: A single bidirectional channel means the diode clamps both positive and negative surges symmetrically — useful on AC signal lines or bipolar DC buses where polarity is not fixed. The operating junction temperature range spans -55°C to 150°C, so it holds its clamping spec across industrial temperature swings without derating at the cold end. It is housed in a through-hole DO-201AA (DO-27) axial package, which allows the body to dissipate heat into the PCB traces and air — no heatsink required for single-pulse events.