1N5526B

Overview

The Microchip Technology 1N5526B is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.8 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 1 µA at 6.2 V, a Zener impedance of 30 Ohms, and a forward voltage of 1.1 V at 200 mA. It is housed in a DO-204AH (DO-35) axial lead glass package.

Feature Summary

• Provides stable voltage regulation with a nominal 6.8 V breakdown voltage.
• Capable of handling up to 500 mW of steady-state power dissipation.
• Constructed with a glass encapsulation for environmental protection.
• Supports high-temperature operation up to a 175°C junction limit.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in electronic systems.
• Clamping applications for signal lines.
• Biasing networks in analog circuitry.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to ensure correct packaging and testing standards. Confirm that the component meets all required military or industrial specifications if applicable. Check for any recent Product Change Notifications regarding assembly sites or labeling changes before finalizing procurement orders.

Selection Notes

Select this component when a 6.8 V regulation point is required in a through-hole configuration. Ensure the circuit design accounts for the 500 mW thermal limits and the specific impedance characteristics. Verify compatibility with the operating temperature range of the target environment. Consider the axial lead format for board layout constraints.

Part Context

This part belongs to the standard 1N55xx series of Zener diodes manufactured by Microchip Technology. It serves as a fundamental discrete semiconductor component for voltage control tasks. The DO-35 package is a widely recognized industry standard for low-power axial devices. It is distinct from surface-mount variants like the 1N5526BUR-1.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the 1N5526B-1 and 1N5526B/TR from Microchip Technology. These alternatives share identical electrical ratings and physical form factors. Verify pinout compatibility and thermal performance before implementation.