BY299

Overview

The BY299 is a fast recovery rectifier diode manufactured by Diotec Semiconductor, designed for high-speed switching applications. It features an average forward current (IFAV) of 2 A and a peak repetitive reverse voltage (VRRM) of 1000 V. The device supports a peak forward surge current (IFSM) of 80 A at 60 Hz. Key electrical characteristics include a maximum forward voltage (VF) of 1.3 V at 3 A, a leakage current (IR) below 5 µA at rated voltage, and a reverse recovery time (trr) under 500 ns. Junction capacitance is typically 15 pF.

Feature Summary

• Fast recovery performance with reverse recovery time under 500 ns
• High voltage capability with 1000 V peak repetitive reverse voltage rating
• Robust surge handling supporting up to 80 A non-repetitive forward surge current
• Low forward voltage drop of less than 1.3 V at rated current

Applications

• High-frequency switching power supplies
• Free-wheeling and flyback diodes in inductive load circuits
• Polarity protection in DC power systems
• General-purpose rectification in industrial electronics

Procurement Notes

Verify the specific part number suffix against official Diotec documentation to confirm exact package type and marking details. Ensure compliance with RoHS and ELV directives as stated in the datasheet. Confirm thermal derating requirements for your specific ambient temperature conditions before finalizing procurement specifications.

Selection Notes

Select this component when a standard rectifier's speed is insufficient for the target circuit frequency. The 1000 V rating provides adequate margin for high-voltage AC lines or inductive kickback scenarios. Consider the 2 A continuous current limit and ensure the PCB layout allows for effective heat dissipation to maintain junction temperatures within the specified -50°C to +150°C operating range.

Part Context

The BY299 belongs to the BY296 through BY299 series of fast recovery rectifiers from Diotec Semiconductor. This family shares identical physical dimensions and general packaging but varies primarily in their peak repetitive reverse voltage ratings. The BY299 represents the highest voltage variant in this specific group, offering 1000 V blocking capability while maintaining the same 2 A current handling and fast recovery characteristics.

Replacement Considerations

Check for direct equivalents in the BY296-BY299 series if voltage ratings differ. Verify that any substitute maintains the 500 ns reverse recovery time and 2 A current rating. Ensure the replacement package matches the original lead spacing and footprint to avoid mechanical integration issues.