1N4946 BK

Overview

The Central Semiconductor Corp 1N4946 BK is a fast recovery silicon rectifier featuring glass passivation. It provides a peak repetitive reverse voltage of 600 V and an average forward current rating of 1.0 A at 55°C. The device utilizes a DO-204AL (GPR-1A) through-hole package with a junction temperature range from -65 to +200 °C. Electrical characteristics include a maximum reverse leakage current of 1.0 μA, a peak forward surge current of 50 A, and a typical reverse recovery time of 250 ns.

Feature Summary

• Glass passivated construction for high reliability
• Fast recovery switching capability
• Hermetically sealed silicon rectifier design

Applications

• General purpose rectification circuits
• High frequency switching applications
• Power supply input stages

Procurement Notes

Verify the specific ordering suffix required for plating options, as Tin/Lead or Lead-Free variants are available via distinct part number additions. Confirm that the component is currently classified as End of Life by the manufacturer, which may impact long-term availability and final shipment dates.

Selection Notes

Select this component when a 600 V blocking voltage and 1.0 A continuous current capacity are required in a standard axial leaded package. Ensure the application environment supports the specified operating junction temperature range and verify compatibility with the 250 ns reverse recovery time for the target circuit speed.

Part Context

This device belongs to the Central Semiconductor 1N4942 series, a family of fast recovery glass passivated silicon rectifiers. The series covers reverse voltage ratings from 200 V to 1000 V, sharing common mechanical outlines and general performance characteristics while differing in specific voltage and recovery time parameters.

Replacement Considerations

Official documentation lists no suggested replacement part numbers for the 1N4946 BK.