1N5526A

Overview

The Microchip Technology 1N5526A is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.8 V with a tolerance of ±20%. The device has a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. It utilizes a DO-204AH (DO-35) axial leaded package for through-hole mounting. Key electrical characteristics include a reverse leakage current of 1 µA at 5.5 V, a forward voltage of 1.1 V at 200 mA, and a Zener impedance of 30 Ohms at a test current of 1 mA.

Feature Summary

• Provides stable voltage regulation with a nominal breakdown voltage of 6.8 V
• Capable of handling up to 500 mW of power dissipation
• Engineered for extended operational reliability across a wide temperature spectrum from -65°C to +175°C
• Constructed in a standard DO-204AH glass axial package for robust through-hole integration

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications to limit signal amplitude
• General-purpose voltage regulation in industrial equipment

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as JAN or JANTX indicate different quality levels and testing standards under MIL-PRF-19500/437. Confirm RoHS compliance status, as standard commercial versions may not meet current environmental directives. Ensure the required tolerance aligns with the ±20% specification provided for the base model. Cross-reference datasheets for any recent manufacturing changes or packaging updates.

Selection Notes

Select this component when a 6.8 V regulation point is required with moderate precision. The ±20% tolerance makes it suitable for general applications rather than high-precision instrumentation. Consider the 500 mW power rating against expected thermal loads. The DO-35 package is appropriate for standard PCB layouts. Evaluate if tighter tolerances are needed, which would require alternative part numbers within the same series.

Part Context

The 1N5526A belongs to the broader family of 1N55xx series Zener diodes manufactured by Microchip Technology. This series covers a wide range of voltage values from approximately 3.3 V to 75 V. These components are widely used in discrete semiconductor designs for basic voltage control tasks. The DO-204AH package is a standard industry form factor for low-power axial diodes.

Replacement Considerations

Direct substitutes include other manufacturers' 1N5526A parts that match the 6.8 V, 500 mW, and DO-35 specifications. Verify pinout compatibility and thermal characteristics before substitution. Military-grade equivalents like JAN1N5526A offer stricter testing but must be confirmed for functional interchangeability.