Obsolete — sourcing for existing BOM lines
The 1.5KE20CAE3/TR13: For existing BOM positions, this part is available through independent surplus and broker channels.
Key ratings for circuit protection fit
The reverse standoff voltage is 17.1 V, meaning the diode does not conduct at normal operating voltages below this level. Breakdown occurs at a minimum of 19 V, and the clamping voltage at peak pulse current (54 A) is 27.7 V max — the protected rail sees no more than 27.7 V during the transient event. A single bidirectional device protects both polarities of a signal or power line — useful for AC-coupled or floating lines where the transient can swing positive or negative relative to ground.
Supplied in a DO-201AA (DO-27) axial-lead package, through-hole mount. The Tape & Reel (TR) packaging option is suited for automated insertion but the axial format also supports hand placement for rework or low-volume builds. Rated for operation from -65°C to +150°C junction temperature — this covers military and industrial temperature extremes, making it suitable for outdoor, engine-bay, or sealed-enclosure environments where ambient temperatures can swing widely.