1N4756AE3/TR13

Overview

The Microchip Technology 1N4756AE3/TR13 is a silicon unidirectional voltage regulator diode designed for through-hole mounting in the DO-41 axial package. It provides a nominal Zener voltage of 47 V with a maximum power dissipation of 1 W and a voltage tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C, featuring a low reverse leakage current of 5 µA and a Zener impedance of 20 Ohms at a test current of 5.5 mA.

Feature Summary

• Provides stable voltage regulation using a single silicon junction structure
• Utilizes compression bonded construction for hermetic sealing
• Supports high thermal stability across an extended operating temperature range

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm electrical tolerances and packaging details. Ensure compatibility with existing board layouts regarding the DO-41 footprint and lead spacing. Confirm RoHS compliance status if required by project specifications before finalizing procurement orders.

Selection Notes

Select this component when a 47 V regulation point is required with ±5% precision. The 1 W power rating supports moderate current loads, while the wide temperature range suits harsh environments. Verify that the 5 µA leakage current meets circuit sensitivity requirements compared to higher-leakage alternatives.

Part Context

This part belongs to the standard 1N47xx series of 1-watt Zener diodes manufactured by Microchip Technology. The 'e3' designation indicates lead-free composition, and the '/TR13' suffix specifies reel packaging. These components are widely used in industrial and commercial electronics for reliable voltage clamping and referencing.

Replacement Considerations

Cross-reference with other manufacturers offering 1N4756A equivalents in the DO-41 package. Verify that substitute parts match the 47 V nominal voltage, 1 W power dissipation, and ±5% tolerance. Ensure thermal resistance and maximum operating temperature ratings are equal or superior to the original specification.