| Part Number | P4SMA540A | P4SMA520A | 
|---|---|---|
| Manufacturer | Littelfuse Inc. | Meritek | 
| Category | TVS - Diodes | TVS - Diodes | 
|   |   | |
| Product Status | Active | Active | 
| Type | Zener | Zener | 
| Unidirectional Channels | 1 | 1 | 
| Bidirectional Channels | - | - | 
| Voltage - Reverse Standoff (Typ) | 486V | 444.6V | 
| Voltage - Breakdown (Min) | 513V | 494V | 
| Voltage - Clamping (Max) @ Ipp | 740V | 717.6V | 
| Current - Peak Pulse (10/1000µs) | 500mA | 560mA | 
| Power - Peak Pulse | 400W | 400W | 
| Power Line Protection | No | - | 
| Applications | General Purpose | General Purpose | 
| Capacitance @ Frequency | - | - | 
| Operating Temperature | -65°C ~ 150°C (TJ) | -55°C ~ 150°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | DO-214AC, SMA | DO-214AC (SMA) | 
| Supplier Device Package | DO-214AC (SMA) | - |