Littelfuse Inc. 1.5SMB series bidirectional TVS diode, order code 1.5SMB30CA, 1500W peak pulse power, 25.6V reverse standoff, DO-214AA (SMB) surface mount package.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMB |
| Mounting | Surface Mount |
| Voltage - breakdown | 28.5V |
| Voltage - clamping (Max) @ ipp | 53.5V |
| Voltage - reverse standoff | 25.6V |
| Current - peak pulse (10/1000μs) | 201.9A (8/20µs) |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -65°C~150°C(TJ) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Applications | Telecom |
| Case | DO-214AA, SMB |
| Bidirectional channels | 1 |
The 1.5SMB30CA: The single bidirectional channel protects signal or power lines in telecom equipment where a single device handles both positive and negative transients, simplifying board layout and reducing component count.
Available in Tape & Reel (TR) or Cut Tape (CT) packaging options to match volume assembly or prototype runs.
Yes — the 25.6 V reverse standoff voltage sits above a nominal 24 V rail, so the diode does not conduct during normal operation. It clamps transients at 53.5 V, which is within the typical 60 V absolute maximum rating of downstream DC-DC converters.