| Part Number | SM4T21AY | SM4T21CAY |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | TVS - Diodes | TVS - Diodes |
|
|
|
| Product Status | Active | Active |
| Type | Zener | Zener |
| Unidirectional Channels | 1 | - |
| Bidirectional Channels | - | 1 |
| Voltage - Reverse Standoff (Typ) | 18V | 18V |
| Voltage - Breakdown (Min) | 20V | 20V |
| Voltage - Clamping (Max) @ Ipp | 39.3V | 39.3V |
| Current - Peak Pulse (10/1000µs) | 59A (8/20µs) | 59A (8/20µs) |
| Power - Peak Pulse | 400W | 400W |
| Power Line Protection | No | No |
| Applications | Automotive | Automotive |
| Capacitance @ Frequency | - | - |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA |
| Supplier Device Package | SMA (DO-214AC) | SMA (DO-214AC) |