MX5KP30CA [Microchip]

These are high-reliability transient voltage suppressors available in unidirectional or bidirectional versions. They provide protection against secondary effects of lightning per IEC61000-4-5, voltage pulses from inductive switching, and induced RFI. With virtually instantaneous response time, they can also be used for ESD and EFT protection per IEC61000-4-2 and IEC61000-4-4. The devices feature economical axial-lead plastic encapsulated construction for thru-hole mounting, with RoHS compliant versions available. They protect sensitive components including ICs, CMOS, Bipolar, BiCMOS, ECL, DTL, and TTL.