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| Part Number | SM4T21AY | SM4T26AY | SM4T21CAY | SM4T28AY | SM4T23AY |
|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Active | Active | Active | Active | Active |
| Type | Zener | Zener | Zener | Zener | Zener |
| Unidirectional Channels | 1 | 1 | - | 1 | 1 |
| Bidirectional Channels | - | - | 1 | - | - |
| Voltage - Reverse Standoff (Typ) | 18V | 22V | 18V | 24V | 20V |
| Voltage - Breakdown (Min) | 20V | 24.4V | 20V | 26.7V | 22.2V |
| Voltage - Clamping (Max) @ Ipp | 39.3V | 48.3V | 39.3V | 50V | 42.8V |
| Current - Peak Pulse (10/1000µs) | 59A (8/20µs) | 48A (8/20µs) | 59A (8/20µs) | 46A (8/20µs) | 54A (8/20µs) |
| Power - Peak Pulse | 400W | 400W | 400W | 400W | 400W |
| Power Line Protection | No | No | No | No | No |
| Applications | Automotive | Automotive | Automotive | Automotive | Automotive |
| Capacitance @ Frequency | - | - | - | - | - |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA |
| Supplier Device Package | SMA (DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) |
