1N3025B-1

Overview

The 1N3025B-1 is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 16 V with a tolerance of ±5%. The device supports a power dissipation of 1 W and operates within a temperature range of -55°C to 175°C. Key electrical parameters include a test current of 15.5 mA, an impedance of 16 Ohms, and a leakage current of 10 µA at 12.2 V. It is housed in the DO-204AL (DO-41) axial through-hole package.

Feature Summary

• Provides stable voltage regulation with a 16 V nominal breakdown voltage
• Capable of handling 1 W power dissipation for robust performance
• Operates reliably across an extended temperature range from -55°C to 175°C
• Utilizes glass case construction for durability

Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Procurement Notes

Verify the specific ordering suffix when purchasing. The standard part number 1N3025B-1 denotes tape and reel packaging, while the suffix /TR indicates a different reel configuration. Confirm the required packaging format with the supplier before placing orders to ensure compatibility with automated assembly processes or manual insertion requirements.

Selection Notes

Select this component for applications requiring a 16 V Zener voltage with high-temperature capability up to 175°C. Ensure the circuit design accommodates the 1 W power rating and the specific impedance characteristics. Consider the axial DO-204AL package constraints for board layout and thermal management needs.

Part Context

This component belongs to the 1N3025 series of 1 Watt Glass Case Zener Diodes originally developed by Microsemi Corporation and now produced by Microchip Technology. The series offers various voltage options within the same physical package, allowing designers to maintain consistent mechanical footprints while adjusting voltage specifications for different circuit requirements.

Replacement Considerations

The 1N4744A is a similar 16 V Zener diode with a 1 W power rating. When substituting, evaluate the circuit for any voltage deviation impacts, as differences in impedance or leakage may require adjustment.