1N5523D/TR

Overview

The Microchip Technology 1N5523D/TR is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tight tolerance of ±2% at a test current of 5 mA. The device operates within a power dissipation limit of 500 mW and maintains low reverse leakage current of 2 µA. It exhibits a Zener impedance of 26 Ohms and supports a wide operating temperature range from -65°C to +175°C junction temperature. The component is housed in the DO-204AH (DO-35) axial through-hole package, suitable for robust circuit integration.

Feature Summary

• Provides precise voltage regulation with a narrow ±2% tolerance band around the 5.1 V nominal point.
• Engineered for high-temperature reliability with an extended junction temperature range up to 175°C.
• Utilizes metallurgically bonded construction to ensure stable performance under thermal stress.

Applications

• Precision voltage reference circuits requiring tight tolerance stability.
• Over-voltage protection stages in sensitive electronic systems.
• Voltage clamping applications in industrial control environments.

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm package type and tolerance class. Ensure the procurement channel provides valid traceability records for aerospace or defense-grade variants if required. Cross-reference the JEDEC code DO-35 with the actual physical component received to prevent substitution errors during assembly.

Selection Notes

Select this component when a 5.1 V reference with superior accuracy compared to standard commercial grades is necessary. The DO-35 axial package facilitates manual insertion or wave soldering processes. Consider the 500 mW power rating for thermal management calculations in enclosed spaces. Verify that the 26 Ohm impedance meets the noise and regulation requirements of the target application circuit.

Part Context

This part belongs to the 1N5518B through 1N5546B series of low-noise Zener diodes manufactured by Microchip Technology. The series is characterized by double plug construction and metallurgical bonding, originally developed to meet MIL-PRF-19500/437 specifications. These devices are available in various tolerance grades and packages, including glass axial and MELF styles, catering to high-reliability semiconductor markets.

Replacement Considerations

Direct parameter-equivalent substitutes include the 1N5523C and 1N5523D from Microchip Technology. Other manufacturers may offer compatible DO-35 packaged Zener diodes with matching 5.1 V ratings and 500 mW power dissipation, provided electrical characteristics align with the original design constraints.