| Part Number | SMA4F20AY | SMA4F28AY |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | TVS - Diodes | TVS - Diodes |
|
|
|
| Product Status | Active | Active |
| Type | Zener | Zener |
| Unidirectional Channels | 1 | 1 |
| Bidirectional Channels | - | - |
| Voltage - Reverse Standoff (Typ) | 20V | 28V |
| Voltage - Breakdown (Min) | 22.2V | 31.1V |
| Voltage - Clamping (Max) @ Ipp | 32.4V | 45.4V |
| Current - Peak Pulse (10/1000µs) | 12.3A | 8.8A |
| Power - Peak Pulse | 400W | 400W |
| Power Line Protection | No | No |
| Applications | Automotive | Automotive |
| Capacitance @ Frequency | - | - |
| Operating Temperature | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-221AC, SMA Flat Leads | DO-221AC, SMA Flat Leads |
| Supplier Device Package | SMAflat | SMAflat |