1500W bidirectional transient suppressor, DO-201 axial
The Littelfuse 1.5KE68CA-TB is a 1500 W bidirectional TVS diode from the 1.5KE series, in a DO-201AA (DO-27) axial-lead package. It clamps transients on a 58.1 V nominal rail — the reverse standoff voltage — and breaks down at a minimum of 64.6 V, limiting the let-through to 92 V at the 16.5 A peak pulse current (10/1000 µs waveform). Rated for continuous junction temperatures from -55 °C to 175 °C, it handles sustained high ambient or self-heating in crowded boards without derating the pulse capability.
Active production, no second-source on record
No official cross-reference or pin-compatible second-source is listed for this order code. The 1.5KE series is a standard JEDEC DO-201 footprint, so parametric equivalents from other manufacturers exist, but a direct drop-in replacement requires verifying the breakdown and clamping voltages against the BOM.
Sourcing and compliance
The part is supplied in bulk packaging (not tape-and-reel) — store the DO-201 axial devices in anti-static tubes or bags; no moisture sensitivity level (MSL) applies to this through-hole package.