1N5540/TR

Single Zener Diodes Overview

The Microchip Technology 1N5540/TR is a single Zener diode with a nominal voltage of 20 V and a maximum power dissipation of 500 mW. It features a ±20% tolerance and operates in the DO-204AH (DO-35) through-hole package. Key electrical parameters include a reverse leakage current of 10 nA at 17 V, a forward voltage of 1.1 V at 200 mA, and a Zener impedance of 100 Ohms. The device supports an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation for circuit protection applications
• Designed for high-temperature operation up to 175°C
• Utilizes a hermetically sealed glass axial leaded package

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific suffix /TR indicates tape and reel packaging configuration. Confirm that the component meets MIL-PRF-19500 standards if military grade qualification is required. Ensure the DO-204AH package dimensions match the target PCB footprint. Validate RoHS compliance status against current regulatory requirements before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 20 V regulation point is needed with moderate tolerance. The 500 mW power rating suits low-current applications. Consider the through-hole mounting requirement for assembly processes. Evaluate the 100 Ohm impedance for noise-sensitive designs where lower impedance alternatives might be necessary.

Single Zener Diodes Part Context

This part belongs to the standard 1N55xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage ratings within the same physical package family. The /TR suffix denotes a specific bulk handling format compared to individual tube packaging options available in the broader product line.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N5540DUR-1 and JANTX1N5540DUR-1 from Microchip Technology. Cross-manufacturer replacements must verify identical 20 V nominal voltage, 500 mW power rating, and DO-204AH package compatibility.