1N4739A BK TIN/LEAD

Overview

The Central Semiconductor Corp 1N4739A BK TIN/LEAD is a silicon Zener diode with a nominal voltage of 9.1 V and a tolerance of ±5%. It operates in the DO-41 through-hole package, dissipating up to 1.0 W at 50°C ambient temperature. The device features a maximum reverse current of 10 μA and a Zener impedance of 5 Ω at a test current of 28 mA. It supports an operating junction temperature range from -65°C to +200°C.

Feature Summary

• Provides stable voltage regulation for industrial and commercial circuits
• Features low reverse leakage current for improved efficiency
• Constructed with a glass body for high stability and reliability

Applications

• Industrial equipment voltage regulation
• Commercial power supply protection
• Entertainment system circuitry
• Computer application voltage reference

Procurement Notes

Verify that the specific ordering suffix matches the required plating finish. The 'TIN/LEAD' designation indicates non-lead-free composition, which differs from standard RoHS-compliant variants. Confirm mechanical compatibility with existing through-hole mounting processes before finalizing procurement orders.

Selection Notes

Select this component when a 9.1 V reference point is required within a 1 W power dissipation limit. Ensure the design accommodates the specified 5% voltage tolerance and the thermal constraints associated with the DO-41 axial leaded package during operation.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt silicon Zener diodes manufactured by Central Semiconductor. The series covers a wide voltage range from 3.3 V to 100 V, utilizing the standardized DO-41 case outline for consistent mechanical integration across various electronic assemblies.

Replacement Considerations

No official replacement part numbers are documented for this specific variant.