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| Part Number | P4KE51C-B | P4KE51CA-B | P4KE56C-B | P4KE51-B | P4KE510-B | P4KE510C-B | P4KE51A-B |
|---|---|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Obsolete | Active | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Type | Zener | Zener | Zener | Zener | Zener | Zener | Zener |
| Unidirectional Channels | - | - | - | 1 | 1 | - | 1 |
| Bidirectional Channels | 1 | 1 | 1 | - | - | 1 | - |
| Voltage - Reverse Standoff (Typ) | 43.6V | 43.6V | 47.8V | 43.6V | 434V | 434V | 43.6V |
| Voltage - Breakdown (Min) | 45.95V | 48.5V | 50.4V | 45.95V | 459V | 459V | 48.5V |
| Voltage - Clamping (Max) @ Ipp | 73.61V | 70.1V | 80.85V | 73.61V | 732.9V | 732.9V | 70.1V |
| Current - Peak Pulse (10/1000µs) | 5.8A | 5.8A | 5.3A | 5.8A | 570mA | 570mA | 5.8A |
| Power - Peak Pulse | 400W | 400W | 400W | 400W | 400W | 400W | 400W |
| Power Line Protection | No | No | No | No | No | No | No |
| Applications | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Capacitance @ Frequency | - | - | - | - | - | - | - |
| Operating Temperature | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial | DO-204AL, DO-41, Axial |
| Supplier Device Package | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) |
