1N4744G

Overview

The Taiwan Semiconductor 1N4744G is a hermetically sealed glass Zener diode with a nominal voltage of 15V and ±5% tolerance. It operates in the DO-41 package, dissipating up to 1W at junction temperatures reaching 200°C. Key electrical parameters include a test current of 17mA, maximum impedance of 14Ω, and leakage current of 5µA at 11.4V.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Wide selection of Zener voltages from 3.3V to 56V
• Standard ±5% voltage tolerance
• RoHS compliant manufacturing

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 reel, A0G for ammo box) against project requirements. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component for through-hole designs requiring stable voltage regulation within the 3.3V to 56V range. Ensure the application environment supports the specified thermal resistance values and that the 1W power dissipation rating accommodates the expected operating conditions.

Part Context

This device belongs to the 1N4728G–1N4758G series manufactured by Taiwan Semiconductor. The series provides a comprehensive range of standard Zener voltages in a robust DO-41 axial leaded package, suitable for general-purpose voltage regulation tasks.

Replacement Considerations

Cross-reference with other manufacturers' 1N4744 equivalents. Verify matching pinout, voltage tolerance, and power dissipation ratings to ensure functional compatibility without circuit redesign.

FAQ

What is the maximum junction temperature for the 1N4744G?

The maximum junction temperature is 200°C.

How is polarity indicated on the 1N4744G?

Polarity is indicated by a cathode band on the device body.