Microchip Technology SMAJ45CAE3/TR13, Zener TVS diode, bidirectional single channel, 45 V reverse standoff, 500 W peak pulse power (10/1000 µs), DO-214AC (SMA) surface-mount package, tape and reel.
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Surface Mount |
| Voltage - breakdown | 50V |
| Voltage - clamping (Max) @ ipp | 72.7V |
| Voltage - reverse standoff | 45V |
| Current - peak pulse (10/1000μs) | 6.9A |
| Power - peak pulse | 500W |
| Power line protection | No |
| Operating temperature | -65°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | DO-214AC, SMA |
| Bidirectional channels | 1 |
The SMAJ45CAE3/TR13 clamps at a maximum of 72.7 V at its 6.9 A peak pulse current, with a 50 V minimum breakdown voltage. The 45 V reverse standoff voltage means it sits across a 45 V nominal rail without conducting until a transient pushes it into breakdown. The 500 W peak pulse power rating sets the energy-handling budget for a single surge event.
Microchip lists the SMAJ45CAE3/TR13 as Active.
Yes, it is a single bidirectional channel. The clamping voltage is symmetrical for positive and negative transients, so it does not require polarity orientation on the board.
500 W peak pulse power measured with a 10/1000 µs waveform. For shorter pulse widths the peak power capability is higher; refer to the pulse derating curve in the datasheet for non-standard waveforms.
Any TVS in the SMAJ family with the same DO-214AC (SMA) package and bidirectional configuration is footprint-compatible. The SMAJ series includes multiple standoff voltage options; for a direct voltage match, look for parts with the same 45 V reverse standoff and 500 W rating in the same package.