Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE39, 1500W peak pulse power, 33.3V standoff, 56.6V clamp, DO-201AA axial, through hole.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5KE |
| Mounting | Through Hole |
| Voltage - breakdown | 35.15V |
| Voltage - clamping (Max) @ ipp | 56.6V |
| Voltage - reverse standoff | 33.3V |
| Current - peak pulse (10/1000μs) | 28.2A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~175°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | DO-201AA, DO-27, Axial |
| Unidirectional channels | 1 |
Its 33.3V reverse standoff voltage and 56.6V clamping point at 28.2A peak pulse current make it a fit for 24V rail protection where the transient must be clamped below 57V.
Littelfuse lists the 1.5KE39 as Obsolete. Sourcing is through independent surplus and broker channels; each lot is date-code and condition verified before quoting.