1N5523D-1/TR

Overview

The 1N5523D-1/TR is a single silicon Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tight tolerance of ±1%. The device operates within a power dissipation rating of 500 mW and is housed in the DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 2 µA at 2.5 V and a Zener impedance of 26 Ohms at a test current of 5 mA. It supports an extended operating temperature range from -65 °C to +175 °C.

Feature Summary

• Provides precise voltage regulation with a 1% tolerance on the 5.1 V Zener voltage.
• Features low reverse leakage current for improved circuit efficiency.
• Constructed with metallurgically bonded double plug design for reliability.
• Capable of operation in extreme environments up to 175 °C junction temperature.

Applications

• Precision voltage reference circuits
• Over-voltage protection systems
• Low-noise power supply regulation

Procurement Notes

Verify that the specific suffix '-1' corresponds to the required military or high-reliability specifications, as standard commercial variants may differ. Confirm the 'TR' suffix indicates tape-and-reel packaging if automated assembly is required. Ensure the DO-204AH package style matches the target PCB footprint. Cross-reference the manufacturer's latest datasheet for any changes in RoHS compliance or material declarations before finalizing procurement orders.

Selection Notes

Select this component when a stable 5.1 V reference with high accuracy is required. The ±1% tolerance makes it suitable for precision analog applications where standard 5% parts are insufficient. Consider the 500 mW power rating to ensure adequate thermal management. The wide temperature range supports use in harsh industrial or aerospace environments where standard commercial diodes would fail.

Part Context

This part belongs to the 1N55xx series of low-noise Zener diodes produced by Microchip Technology. The series is known for its metallurgical bonding and double plug construction, which contribute to superior stability and low noise performance compared to standard planar devices. These diodes are often utilized in sensitive instrumentation and military-grade electronics requiring high reliability.

Replacement Considerations

• 1N5523D
• 1N5523C/TR

FAQ

What is the difference between the 1N5523D-1 and standard 1N5523 variants?

The '-1' suffix typically denotes a specific quality level, such as JAN or JANTX per MIL-PRF-19500/437, offering tighter tolerances and lower leakage than commercial equivalents.

Does the 'TR' suffix affect the electrical performance?

No, the 'TR' suffix only indicates the packaging format (Tape and Reel) for automated mounting; it does not alter the electrical parameters or functionality of the diode.