1N4757G

Overview

The Taiwan Semiconductor 1N4757G is a silicon planar Zener diode housed in a DO-41 package. It provides a nominal Zener voltage of 51 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within a junction temperature range of -65 °C to +200 °C. Electrical characteristics include a test current of 5 mA, a maximum dynamic impedance of 95 Ω at the test current, and a leakage current of 5 µA at 38.8 V reverse voltage.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Wide operating junction temperature range up to 200 °C
• Pure tin plated leads compliant with J-STD-002 solderability standards

Applications

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

Procurement Notes

Verify the specific suffix against the datasheet ordering information to confirm packaging type. The R0G suffix indicates a reel pack containing 5,000 units per 14-inch reel, while the A0G suffix denotes an ammo box configuration with 3,000 units. Confirm RoHS compliance status as required by project specifications before finalizing procurement orders.

Selection Notes

Select this component when a stable 51 V reference is required in through-hole designs. The DO-41 package offers robust mechanical stability for general-purpose circuitry. Ensure the application environment remains within the specified thermal limits to maintain the rated 1 W power dissipation capability without derating.

Part Context

This part belongs to the 1N4728G–1N4758G series from Taiwan Semiconductor. The series covers a broad selection of Zener voltages ranging from 3.3 V to 56 V. All devices in this family share identical physical dimensions and electrical testing methodologies, differing primarily in their specific breakdown voltage ratings.

Replacement Considerations

Cross-reference with other manufacturers' 1N4757 equivalents. Verify that substitute parts meet the same 51 V nominal voltage, ±5% tolerance, and 1 W power rating requirements. Ensure the replacement package matches the DO-41 form factor for direct board compatibility.