1N4739G

Overview

The Taiwan Semiconductor 1N4739G is a single-die Zener diode housed in a DO-41 through-hole package. It provides a nominal Zener voltage of 9.1V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1W and operates within a junction temperature range of -65°C to +200°C. Electrical characteristics include a test current of 28mA, a maximum Zener impedance of 5Ω at the test current, and a leakage current of 10µA at the rated reverse voltage.

Feature Summary

• Hermetically sealed glass compression bonded construction for corrosion resistance
• Wide selection of Zener voltages ranging from 3.3V to 56V
• Pure tin plated leads ensuring solderability per J-STD-002 standards

Applications

• Low voltage stabilizers or voltage references
• Adapters
• Lighting applications
• On-board DC/DC converter

Procurement Notes

Verify the specific ordering suffix (R0G for reel or A0G for ammo box) against project requirements. Confirm RoHS compliance status via official documentation. Ensure the selected part number matches the required Zener voltage and tolerance specifications before procurement.

Selection Notes

Select this component for general-purpose voltage regulation where a 9.1V reference is needed. Consider the thermal resistance values when designing heat dissipation paths. Verify that the operating environment stays within the specified temperature limits for reliable performance.

Part Context

This component belongs to the 1N4728G–1N4758G series manufactured by Taiwan Semiconductor. The series utilizes a DO-41 case style and offers various Zener voltage options. The 1N4739G specifically targets the 9.1V segment of this broad voltage range lineup.

Replacement Considerations

Cross-reference with other manufacturers' 1N4739 equivalents. Verify pinout compatibility and ensure replacement parts meet the same electrical parameters and mechanical dimensions.