1N5522C

Overview

The Microchip Technology 1N5522C is a silicon unidirectional Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.7 V with a tolerance of ±2% and a maximum power dissipation of 0.5 W. The device utilizes the DO-204AH (DO-35) axial leaded package, suitable for through-hole mounting. Key electrical characteristics include a maximum dynamic impedance of 22 Ω at 10 mA test current and a maximum forward voltage of 1.1 V. It operates within a temperature range of -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation with tight ±2% tolerance
• Capable of handling high thermal loads up to 175°C junction temperature
• Utilizes hermetically sealed glass axial package for reliability

Applications

• Voltage reference circuits in precision instrumentation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific suffix 'C' indicates the ±2% tolerance variant when sourcing. Confirm the manufacturer is Microchip Technology, as other vendors may produce similar part numbers with different specifications. Ensure the DO-204AH package footprint matches the design requirements. Cross-reference datasheets from authorized distributors to confirm current production status and compliance certifications.

Selection Notes

Select this component when a precise 4.7 V reference is required with tighter tolerance than standard variants. The DO-204AH package is appropriate for automated through-hole assembly or manual soldering. Consider the 0.5 W power rating against expected circuit dissipation. The high operating temperature range makes it suitable for harsh environments where standard commercial grade parts may fail.

Part Context

This part belongs to the 1N5522 series of Zener diodes manufactured by Microchip Technology. It is functionally related to the JAN1N5522CUR-1 but differs in packaging and tolerance specifications. The 1N5522C represents the commercial grade version with specific performance parameters defined by Microchip's manufacturing standards for reliable voltage regulation.

Replacement Considerations

Direct substitutes include the JAN1N5522CUR-1 from MACOM/Cobham, though package differences exist. Verify equivalent Zener voltage and tolerance before substitution. Alternative packages like DO-213AA require mechanical redesign.