The 1N4149 Diode is a high-speed switching diode, with a reverse voltage rating of 100 V and is suitable for forwarding currents of up to 200 mA. The 1N4149 Diode has a high switching speed of 4ns. The forward voltage drop of the diode is 1.0 V.
Features of 1N4149
- High Reliability
- Low forward voltage
- High-speed switching
- Low reverse leakage current
- Lead-free finish, RoHS compliant
Pinout of 1N4149
Specification of 1N4149
| Package Type | DO-41 |
| Polarization | Silver |
| Average Rectified Current (Io) | 0.5 A |
| Operating Temperature-Max | 175.0 Cel |
| Output Current-Max | 200 mA |
| Peak Repeat. Reverse Voltage | 100 V |
| Max. Reverse Current (Ir) | 0.025 mA |
| Max. RMS Reverse Voltage (Vr) | 75 V |
| Max. Forward Voltage Drop (Vf) | 1.0 V |
| Max Power Dissipation | 500 mW |
| Reverse Current | 5 µA |
Uses of 1N4149
1N4149 diode can be used in many general-purpose applications. It can be used to build a bridge rectifier, an integral part of DC power supplies that convert AC to DC. It can also be used for clipper applications, reverse current blocking in various component protection circuits, logic gates, etc.
Advantages of 1N4149
- Cheap construction
- Low forward voltage drop
- Low reverse leakage
- High forward surge current capability
Applications
- Power supply for electronic equipment
- Battery charging circuit
- Adapter
- Rectifier circuit
- Switching device
- Purpose of short-circuit protection