1.5kW bidirectional TransZorb® in DO-201AA
The 1.5KE68C-E3/73: The 1.5KE68C-/73 is a Vishay TransZorb® bidirectional TVS diode in the 1.5KE series, rated for 1500W (1.5kW) peak pulse power dissipation. The DO-201AA (DO-27) axial-lead through-hole package suits point-to-point wiring on terminal blocks or perforated boards in power supplies and industrial controls.
Clamping and temperature envelope
The 98V clamping voltage at 15.3A peak pulse current defines the maximum voltage a protected circuit sees during a surge event. For a 48V nominal bus, this clamp margin is roughly 2× the operating voltage, typical for a TVS in this power class. The operating junction temperature range spans -55°C to +175°C, covering military-temperature applications.
Sourcing an obsolete TransZorb®
Vishay lists the 1.5KE68C-/73 as Obsolete. No official successor order code is recorded in the lifecycle data. For a BOM line that requires this exact clamping voltage and package, the procurement path is surplus or broker inventory. A buyer should verify date code and RoHS compliance (the part ships in Tape & Box) when sourcing outside the authorized channel.