| Part Number | 1N4937 | 1N4938 |
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor |
| Category | Diodes - Rectifiers - Single | Diodes - Rectifiers - Single |
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| Product Status | Active | Obsolete |
| Diode Type | Standard | Standard |
| Voltage - DC Reverse (Vr) (Max) | 600 V | 200 V |
| Current - Average Rectified (Io) | 1A | 500mA |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 1 A | 1 V @ 100 mA |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | 300 ns | 50 ns |
| Current - Reverse Leakage @ Vr | 5 µA @ 600 V | 100 nA @ 75 V |
| Capacitance @ Vr, F | - | 5pF @ 0V, 1MHz |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | DO-204AL, DO-41, Axial | DO-204AH, DO-35, Axial |
| Supplier Device Package | Axial | DO-35 (DO-204AH) |
| Operating Temperature - Junction | -65°C ~ 150°C | 175°C (Max) |