Description
DSEI1X31-06C Fast Recovery Epitaxial Diode
Product Overview
The DSEI1X31-06C is a high-performance, fast-recovery power diode manufactured by IXYS (now part of Littelfuse). Engineered for high-frequency power conversion, this component is designed for applications where high efficiency and low switching losses are critical. Its epitaxial construction minimizes reverse recovery charge ($Q_{rr}$), making it an ideal choice for high-speed switching circuits, including power supplies, motor drives, and industrial inverters.
Housed in a rugged TO-220 package, this diode is built for high thermal efficiency, allowing for reliable operation in demanding environments. It serves as a superior alternative to standard rectifiers in any application requiring high-speed commutation and low-noise operation.
Key Features
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Hyper-Fast Reverse Recovery: Optimized for minimal switching losses, significantly reducing heat generation at high operating frequencies.
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Low Forward Voltage Drop: Maintains high efficiency during the conduction state, minimizing power dissipation.
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Rugged Epitaxial Structure: The Planar Passivated technology ensures high reliability and consistent performance over a wide range of temperatures.
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TO-220 Package: Provides excellent thermal transfer to heat sinks, facilitating compact, high-power density designs.
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High Surge Capability: Designed to withstand high-current transient surges common in inductive motor-drive circuits.
Technical Specifications
| Parameter | Specification |
| Component Type | Fast Recovery Epitaxial Diode (FRED) |
| Peak Repetitive Reverse Voltage ($V_{RRM}$) | 600V |
| Average Rectified Forward Current ($I_{FAVM}$) | 31A |
| Reverse Recovery Time ($t_{rr}$) | 35ns (Typical) |
| Package Type | TO-220AC |
| Operating Temperature | -40°C to +150°C |
Applications
The DSEI1X31-06C is engineered for high-frequency power electronics:
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Switch-Mode Power Supplies (SMPS): Acts as a high-speed output rectifier for efficient DC-DC conversion.
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Motor Control: Used as a freewheeling diode in PWM-controlled motor drives to suppress inductive kickback.
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Inverters & Converters: Ideal for high-frequency UPS systems and solar energy inverters where switching speed directly correlates to efficiency.
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Induction Heating: Supports the rapid switching required for high-frequency industrial heating applications.

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