1N4730G

Overview

The Taiwan Semiconductor Corporation 1N4730G is a hermetically sealed glass Zener diode with a nominal voltage of 3.9V and a maximum power dissipation of 1W at ambient temperatures up to 50°C. It operates within a junction temperature range of -65°C to +200°C and features a ±5% tolerance on the Zener voltage. The device utilizes a DO-41 package with pure tin-plated leads, offering a test current of 64mA, a maximum dynamic impedance of 9Ω, and a leakage current of 50µA.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Pure tin plated leads compliant with J-STD-002 solderability standards
• RoHS compliant manufacturing process

Applications

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

Procurement Notes

Verify that the specific part number matches the required voltage tolerance and thermal ratings for your application. Confirm RoHS compliance status if restricted materials are prohibited in your supply chain. Ensure the DO-41 package dimensions align with your PCB layout constraints. Check for any specific ordering suffixes required for bulk packaging formats such as reels or ammo boxes.

Selection Notes

Select this component when a stable reference voltage near 3.9V is needed in high-power environments. The wide operating temperature range supports demanding industrial conditions. Consider the low dynamic impedance for improved regulation performance under varying load currents. Verify that the single-die configuration meets the circuit's isolation requirements.

Part Context

This component belongs to the 1N4728G through 1N4758G series from Taiwan Semiconductor. The series provides a broad selection of Zener voltages ranging from 3.3V to 56V. All devices share the same 1W power rating and DO-41 glass package form factor. This standardization simplifies inventory management for designs requiring multiple voltage levels.

Replacement Considerations

Cross-reference with other manufacturers' 1N4730 equivalents. Verify that substitute parts maintain the same hermetic sealing and ±5% tolerance specifications. Ensure the replacement device supports the required 1W power dissipation and DO-41 footprint compatibility.