1N4740A BK PBFREE

Overview

The Central Semiconductor Corp 1N4740A BK PBFREE is a silicon Zener diode designed for voltage regulation. It features a nominal Zener voltage of 10 V with a 5% tolerance, tested at 25 mA. The device dissipates 1.0 W at 50°C and operates within a temperature range of -65°C to +200°C. Key electrical parameters include a maximum reverse current of 10 μA at 9 V, a maximum DC current of 7.6 A, and a temperature coefficient ranging from +0.04% to +0.08% per °C.

Feature Summary

• Provides stable voltage regulation using silicon Zener technology
• Features a robust DO-41 axial leaded package for through-hole mounting
• Designed for reliable operation across wide industrial temperature ranges

Applications

• Industrial voltage regulation circuits
• Commercial power supply protection
• Computer system voltage reference applications

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm plating options. Confirm availability status as product lifecycle changes may affect distribution channels. Ensure compatibility with existing thermal management requirements given the 1.0 W dissipation rating.

Selection Notes

Select this component when a precise 10 V reference is required in through-hole designs. Consider the positive temperature coefficient for thermal stability analysis. Verify that the 1.0 W power rating aligns with the expected operating conditions and ambient temperatures of the target application.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1.0 Watt silicon Zener diodes manufactured by Central Semiconductor. The series covers a voltage range from 3.3 V to 100 V with consistent 5% tolerance specifications across all variants in the lineup.

Replacement Considerations

No public confirmed substitute part numbers are available for this component.