1N5254B

Single Zener Diodes Overview

The onsemi 1N5254B is a single-channel Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 27 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within an extended temperature range from -65 °C to +200 °C. Key electrical characteristics include a test current of 4.6 mA, a maximum Zener impedance of 41 Ohms, and a maximum reverse leakage current of 100 nA at 21 V. It utilizes a DO-35 axial through-hole package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a wide operating temperature range
• Utilizes glass encapsulation in a standard axial leaded package
• Designed for general-purpose voltage reference and protection circuits

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Voltage reference generation in analog signal processing
• Overvoltage protection for sensitive electronic components

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as onsemi, Central Semiconductor, Vishay, and Diodes Inc. all produce this part number. Confirm the package type matches design requirements, as variations exist between DO-35 and hermetic ceramic packages. Check datasheets for exact impedance and leakage specifications, which may vary slightly by manufacturer. Ensure compliance with environmental standards such as RoHS if required for the application.

Single Zener Diodes Selection Notes

Select based on the required Zener voltage stability and thermal performance. The 27 V rating suits mid-range reference needs. Consider the 500 mW power limit for thermal management in enclosed spaces. The DO-35 package offers reliable through-hole mounting. Verify the maximum operating temperature requirement against the specified -65 °C to +200 °C range for harsh environments.

Single Zener Diodes Part Context

This component belongs to the 1N52xx series of Zener diodes, widely used for low-power voltage regulation. The 1N5254B specifically targets the 27 V segment of this family. It serves as a fundamental discrete semiconductor element in mixed-signal designs, providing a fixed reference point or clamping voltage for circuit protection.

Single Zener Diodes Replacement Considerations

• 1N5254B-TR (Vishay General Semiconductor)
• 1N5254B TR PBFREE (Central Semiconductor Corp)