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| Part Number | 1N4149 | 1N4249 | 1N4148 | 
|---|---|---|---|
| Manufacturer | onsemi | NTE Electronics, Inc | onsemi | 
| Product Status | Active | Active | Active | 
| Diode Type | Standard | Standard | Standard | 
| Voltage - DC Reverse (Vr) (Max) | 100 V | 1000 V | 100 V | 
| Current - Average Rectified (Io) | 500mA | 1A (DC) | 200mA | 
| Voltage - Forward (Vf) (Max) @ If | 1 V @ 10 mA | 1.2 V @ 1 A | 1 V @ 10 mA | 
| Speed | Fast Recovery =< 500ns, > 200mA (Io) | Standard Recovery >500ns, > 200mA (Io) | Small Signal =< 200mA (Io), Any Speed | 
| Reverse Recovery Time (trr) | 4 ns | 2 µs | 4 ns | 
| Current - Reverse Leakage @ Vr | 25 nA @ 20 V | 1 µA @ 1000 V | 5 µA @ 75 V | 
| Capacitance @ Vr, F | 2pF @ 0V, 1MHz | - | 4pF @ 0V, 1MHz | 
| Mounting Type | Through Hole | Through Hole | Through Hole | 
| Package / Case | DO-204AH, DO-35, Axial | Axial | DO-204AH, DO-35, Axial | 
| Supplier Device Package | DO-35 | Axial | DO-35 | 
| Operating Temperature - Junction | 175°C (Max) | - | -65°C ~ 175°C |