1N4743A BK PBFREE

Overview

The Central Semiconductor Corp 1N4743A BK PBFREE is a silicon Zener diode designed for voltage regulation in industrial, commercial, entertainment, and computer applications. It features a nominal Zener voltage of 13 V with a 5% tolerance range spanning from 12.35 V to 13.65 V. The device operates at a test current of 19 mA and dissipates up to 1.0 W of power at 50°C ambient temperature. It utilizes the DO-41 axial through-hole package and supports an operating and storage temperature range from -65°C to +200°C.

Feature Summary

• Provides stable voltage regulation within a tight 5% tolerance band
• Capable of handling high thermal loads with a maximum junction temperature of 200°C
• Constructed using reliable silicon technology for consistent performance

Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer hardware voltage stabilization

Procurement Notes

Verify the specific ordering suffix requirements when sourcing this component. The 'BK' designation indicates bulk packaging, while 'PBFREE' confirms lead-free plating compliance. Confirm RoHS status directly with the manufacturer or authorized distributors prior to procurement to ensure adherence to environmental regulations applicable to your region.

Selection Notes

Select this component for circuits requiring precise 13 V reference levels. Ensure the application environment remains within the specified -65°C to +200°C operational limits. Verify that the expected current draw does not exceed the maximum DC current rating of 9.9 mA to maintain safe power dissipation levels below the 1.0 W threshold.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers a wide voltage range from 3.3 V to 100 V, all sharing the same DO-41 axial package and general electrical characteristics. This specific model sits in the lower-to-mid voltage segment of the lineup.

Replacement Considerations

No official replacement part numbers are documented for this specific item in the provided datasheet.