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