Overview
The MUR840 is an ultrafast recovery rectifier diode designed for use in switching power supplies, inverters, and as free-wheeling diodes. It is part of the Fast Recovery Epitaxial Diode (FRED) family, known for its low forward voltage drop and fast reverse recovery time. This diode is suitable for high-frequency operations and is widely used in various power switching applications.
Key Specifications
| Parameter | Symbol | Unit | Typical | Maximum |
|---|---|---|---|---|
| Repetitive Peak Reverse Voltage | VRRM | V | - | 400 |
| Working Peak Reverse Voltage | VRWM | V | - | 400 |
| Average Rectified Forward Current | IF(AV) | A | - | 8 |
| Repetitive Peak Surge Current | IFRM | A | - | 16 |
| Nonrepetitive Peak Surge Current | IFSM | A | - | 100 |
| Maximum Forward Voltage Drop | VF | V | - | 1.3 |
| Reverse Recovery Time | trr | ns | - | 60 |
| Junction Temperature | Tj | °C | - | 175 |
| Storage Temperature | Tstg | °C | -55 | 175 |
Key Features
- Ultrafast recovery time (trr = 60 ns @ IF = 8 A)
- Low forward voltage drop (VF = 1.3 V @ IF = 8 A)
- High reverse voltage rating (VRRM = 400 V)
- Avalanche energy rated
- RoHS compliant
- High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance
- Guard ring for enhanced ruggedness and long-term reliability
- AEC-Q101 qualified and PPAP capable
Applications
- Switching power supplies
- Inverters
- Free-wheeling diodes
- Power switching circuits
- General purpose power applications
- ATX power supplies, notebook adapters, flat panel displays, and servers
Q & A
- What is the MUR840 diode used for?
The MUR840 is used in switching power supplies, inverters, and as free-wheeling diodes due to its ultrafast recovery time and low forward voltage drop.
- What is the maximum forward current rating of the MUR840?
The maximum average rectified forward current (IF(AV)) is 8 A at a case temperature of 155°C.
- What is the reverse recovery time of the MUR840?
The reverse recovery time (trr) is typically 60 ns at IF = 8 A.
- Is the MUR840 RoHS compliant?
- What is the maximum junction temperature of the MUR840?
The maximum junction temperature (Tj) is 175°C.
- What package type does the MUR840 come in?
The MUR840 comes in a TO-220AC package.
- Is the MUR840 suitable for high-frequency operations?
- What are the typical applications of the MUR840?
Typical applications include switching power supplies, inverters, free-wheeling diodes, and general purpose power applications.
- Does the MUR840 have any special certifications?
- What is the storage temperature range for the MUR840?
The storage temperature range is from -55°C to 175°C.
