1N5250BTR

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5250BTR is a silicon unidirectional Zener voltage regulator diode housed in a DO-35 glass axial-lead package. It features a nominal Zener voltage of 20 V with a 5% tolerance and a power dissipation rating of 500 mW. The device operates within a temperature range of -65 °C to +200 °C, exhibits a maximum reverse leakage current of 100 nA, and has a Zener impedance of 25 Ohms.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single silicon Zener junction
• Encapsulated in hermetically sealed glass for environmental protection
• Designed for through-hole mounting via axial leads

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the manufacturer designation on the component marking, as Microchip Technology acquired Fairchild's discrete semiconductor lines. Confirm the specific suffix 'BTR' corresponds to the required tape-and-reel packaging format if automated assembly is planned. Ensure the part meets the necessary RoHS compliance status for the intended market, as historical data indicates variations across different production eras and distributors.

Single Zener Diodes Selection Notes

Select this component when a 20 V regulation point is required in low-power applications. The 500 mW rating suits circuits with minimal thermal constraints. The DO-35 package offers a compact footprint for standard PCB layouts. Consider the 25 Ohm impedance for dynamic load requirements and verify that the operating temperature range aligns with the system environment.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of Zener diodes, which provides a broad selection of voltage values from 2.4 V to 200 V. The series is characterized by its glass axial-lead construction and 500 mW power handling capability. It serves as a fundamental discrete component for basic analog signal conditioning and power supply stabilization tasks.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5250B from NTE or Microchip Technology. Other manufacturers such as Central Semiconductor and Vishay also produce identical specifications under the same 1N5250BTR designation. Verify pinout compatibility and package dimensions before substitution.