The 1.5KE20A/B: Housed in a DO-201AA (DO-27) axial leaded package, it mounts through hole and is supplied in bulk box packaging — straightforward to insert and solder on a wave line, with no moisture sensitivity level to track on the shelf.
The minimum breakdown voltage is 19 V, meaning the diode starts conducting in avalanche at that threshold. The reverse standoff voltage of 17.1 V is the maximum continuous DC voltage the part can sit across without drawing significant leakage — a 15 V supply rail with 10% tolerance (16.5 V max) stays below this, so the diode remains in standby until a transient pushes the line above 19 V. This clamping level protects downstream semiconductors rated for 30 V or higher, giving a guard band of about 2.3 V before the next component's abs-max rating.
Active production — sourcing posture for this TVS
Sourced through authorized and independent distribution channels.