Microchip Technology SMAJ54CAE3/TR13, Zener TVS diode, bidirectional, 54V reverse standoff, 87.1V clamp, 500W peak pulse power, DO-214AC (SMA) surface mount, Tape & Reel.
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Surface Mount |
| Voltage - breakdown | 60V |
| Voltage - clamping (Max) @ ipp | 87.1V |
| Voltage - reverse standoff | 54V |
| Current - peak pulse (10/1000μs) | 5.7A |
| 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 |
Its 54V reverse standoff voltage sits just above a 48V supply, so the diode stays out of conduction during normal operation but triggers before the downstream circuitry sees damaging overvoltage. The bidirectional configuration means a single device protects both polarities — useful on AC-coupled or floating lines where the transient can swing either direction.
Yes. The 54V reverse standoff voltage is the standard choice for a 48V nominal rail — the TVS remains non-conducting under normal conditions and clamps transients before they exceed the downstream component ratings. The 87.1V clamp at 5.7A peak pulse current provides a safe margin for most 48V DC-DC converters and downstream ICs rated to 60-80V.