What the 1.5 kW rating means for transient protection
The 1.5KE160CAHE3_A/D: At a reverse standoff voltage of 136 V, it remains transparent to the protected circuit; when a transient exceeds the 152 V minimum breakdown threshold, the device clamps at a maximum of 219 V while shunting up to 6.8 A of peak pulse current. That clamping voltage is the ceiling the downstream components must survive — a 250 V-rated MOSFET on the same rail has comfortable margin. The single bidirectional channel handles transients of either polarity, which simplifies layout for AC-coupled or floating signal lines where the ground reference is not fixed.
The TransZorb® series is Vishay's branded TVS platform, and the Automotive suffix (HE3) indicates the part is built on an automotive-qualified production line with full PPAP documentation available.
Through-hole package and rework considerations
Housed in a DO-201AA (DO-27) axial leaded package, this diode is through-hole mounted. The 1.5KE supplier device package code tells you the body size is consistent across the 1.5 kW family — the leads are 0.042-inch diameter tin-plated copper, which handles the soldering iron well. No moisture sensitivity level to track; the part survives hot-air rework without a pre-bake, and the axial leads are easy to dress into existing PCB holes. The Tape & Box (TB) packaging option means the parts are shipped in ammo-pack format with the leads formed for automatic insertion — not loose in a bag. If you are hand-loading a prototype batch, expect the leads to need straightening before through-hole placement.
Sourcing and lifecycle posture
The base product number 1.5KE160 covers the full family; the HE3_A/D suffix identifies this specific automotive-qualified, bidirectional variant in Tape & Box format.