BY459-1500,127

Overview

The BY459-1500,127 is a glass-passivated double diffused PIN rectifier diode manufactured by NXP. It features fast forward recovery and low forward voltage characteristics. The device is housed in an SOD59 (TO220AC) leaded package with the tab connected to the cathode. Key electrical parameters include a peak repetitive reverse voltage of 1500 V, a peak working forward current of 12 A at 48 kHz, and a maximum reverse recovery time of 350 ns. It is designed for high thermal cycling performance.

Feature Summary

• Fast switching capability with soft recovery characteristics
• Low forward volt drop for improved efficiency
• High thermal cycling performance suitable for demanding environments
• Low thermal resistance junction-to-mounting base

Applications

• HDTV receivers horizontal deflection circuits
• Multi-sync monitor horizontal deflection circuits

Procurement Notes

Verify component authenticity through authorized channels as this part may be discontinued or subject to obsolescence. Confirm exact ordering suffixes match specific thermal or packaging variants if required. Ensure compliance with RoHS standards and check for any life support application restrictions before integration into final designs.

Selection Notes

Select this component for applications requiring high voltage blocking capabilities combined with rapid switching speeds. Consider the TO220AC package for effective heat dissipation via mounting base connection. Evaluate thermal resistance requirements against expected operating temperatures and pulse widths to ensure reliable long-term operation in deflection circuits.

Part Context

This diode belongs to the BY459 series of fast, high-voltage damper diodes produced by Philips Semiconductors, now NXP. The series utilizes glass-passivated double diffused PIN technology to achieve superior switching performance compared to standard rectifiers. It is specifically engineered for horizontal deflection applications where low reverse recovery charge and fast turn-off times are critical.

Replacement Considerations

Check for direct equivalents within the BY459 series such as the BY459-1500S variant which shares similar specifications but may have slight differences in forward voltage or recovery characteristics. Verify pinout compatibility and thermal resistance values when substituting.