Littelfuse IXYS DH40-18A diode featuring short recovery times and low leakage current for switching
Product Overview
The DH40-18A is a high-performance fast recovery diode designed for low loss and soft recovery applications. Featuring planar passivated chips, it offers very low leakage current, very short recovery times, and improved thermal behavior. Its very low Irm-values and soft reverse recovery characteristics contribute to reduced power dissipation and turn-on losses in commutating switches, minimizing EMI/RFI. The diode is avalanche voltage rated for reliable operation and is suitable for use as an antiparallel diode for high-frequency switching devices, antisaturation diode, snubber diode, and freewheeling diode. It is also utilized in rectifiers for switch-mode power supplies (SMPS) and uninterruptible power supplies (UPS).
Product Attributes
- Brand: IXYS
- Part Number: DH40-18A
- Package: TO-247 (Industry standard outline, RoHS compliant, Epoxy meets UL 94V-0)
- Certifications: RoHS compliant
- Material: Planar passivated chips
Technical Specifications
| Symbol | Definition | Conditions | Unit | Min. | Typ. | Max. |
|---|---|---|---|---|---|---|
| VRRM | Max. repetitive reverse blocking voltage | TVJ = 25C | V | 1800 | ||
| IFAV | Average forward current | TC = 25C | A | 40 | ||
| VF0 | Threshold voltage | TVJ = 25C | V | 1.38 | ||
| rF | Slope resistance for power loss calculation only | TVJ = 25C | m | 17.5 | ||
| IR | Reverse current | VR = 1800 V, TVJ = 25C | A | 125 | ||
| IR | Reverse current | VR = 1800 V, TVJ = 125C | mA | 0.45 | ||
| VF | Forward voltage drop | IF = 40 A, TVJ = 25C | V | 2.06 | 2.56 | |
| VF | Forward voltage drop | IF = 80 A, TVJ = 25C | V | 2.79 | ||
| Ptot | Total power dissipation | TC = 25C | W | 280 | ||
| RthJC | Thermal resistance junction to case | K/W | 0.45 | |||
| RthCH | Thermal resistance case to heatsink | K/W | 0.25 | |||
| IFSM | Max. forward surge current | t = 10 ms; (50 Hz), sine; TVJ = 45C | A | 1800 | ||
| CJ | Junction capacitance | VR = 900 V, f = 1 MHz, TVJ = 25C | pF | 19 | ||
| TVJ | Virtual junction temperature | C | -55 | 150 | ||
| Tstg | Storage temperature | C | -55 | 150 | ||
| IRMS | RMS current | per terminal | A | 70 | 125 | |
| Mounting torque | Nm | 0.8 | 1.2 | |||
| Weight | g | 6 |
Note: Data according to IEC 60747 and per semiconductor unless otherwise specified. IXYS reserves the right to change limits, conditions and dimensions.
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