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| Part Number | SMAJ51A | SMAJ54A | SMAJ51CA | SMAJ51AH | SMAJ51H | SMAJ51C | SMAJ51 |
|---|---|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Bourns Inc. | Taiwan Semiconductor Corporation | Taiwan Semiconductor Corporation | Meritek | Meritek |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
| Type | Zener | Zener | Zener | Zener | Zener | Zener | Zener |
| Unidirectional Channels | 1 | 1 | - | 1 | 1 | - | 1 |
| Bidirectional Channels | - | - | 1 | - | - | 1 | - |
| Voltage - Reverse Standoff (Typ) | 51V | 54V | 51V | 51V | 51V | 51V | 51V |
| Voltage - Breakdown (Min) | 56.7V | 60V | 56.7V | 56.7V | 56.7V | 56.7V | 56.7V |
| Voltage - Clamping (Max) @ Ipp | 82.4V | 87.1V | 82.4V | 82.4V | 91.1V | 91.1V | 91.1V |
| Current - Peak Pulse (10/1000µs) | 4.9A | 4.6A | 4.9A | 4.9A | 4.4A | 4.39A | 4.39A |
| Power - Peak Pulse | 400W | 400W | 400W | 400W | 400W | 400W | 400W |
| Power Line Protection | No | No | No | No | No | - | - |
| Applications | General Purpose | General Purpose | General Purpose | Automotive | Automotive | General Purpose | General Purpose |
| Capacitance @ Frequency | - | - | - | - | - | - | - |
| Operating Temperature | -65°C ~ 150°C (TJ) | -65°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C | -55°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount | 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 | DO-214AC (SMA) | DO-214AC (SMA) |
| Supplier Device Package | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) | - | - |
