1N4740G

Overview

The Taiwan Semiconductor 1N4740G is a hermetically sealed glass Zener diode with a nominal voltage of 10V and a tolerance of ±5%. It operates in the DO-41 through-hole package, dissipating up to 1W of power. The device supports a junction temperature range from -65°C to +200°C. Electrical characteristics include a test current of 25mA, a maximum reverse leakage current of 10µA at 7.6V, and a Zener impedance of 7Ω.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Wide operating junction temperature range extending to +200°C
• Standardized DO-41 axial leaded package configuration

Applications

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

Procurement Notes

Verify the specific ordering suffix (e.g., R0G for reels, A0G for ammo boxes) against project requirements. Confirm RoHS compliance status as indicated on the datasheet. Ensure the manufacturer's official documentation is referenced for final electrical parameter validation before integration into designs.

Selection Notes

Select this component when a 10V regulation point is required within a high-temperature environment. The DO-41 package suits through-hole assembly processes. Evaluate thermal resistance values if operating near the maximum power dissipation limit to ensure adequate heat management.

Part Context

This part belongs to the 1N4728G–1N4758G series manufactured by Taiwan Semiconductor. The series covers a wide Zener voltage selection from 3.3V to 56V. All devices share identical mechanical data and hermetic sealing features while varying in specific electrical parameters like test current and impedance.

Replacement Considerations

Cross-reference with other manufacturers' 1N4740A equivalents. Verify that substitute parts meet the same ±5% voltage tolerance and 1W power rating. Ensure replacement components support the required +200°C junction temperature capability.