1N5251BTR

Single Zener Diodes Overview

The onsemi 1N5251BTR is a single Zener diode with a nominal voltage of 22 V and a tolerance of ±5%. It operates within a power dissipation range up to 500 mW at 25°C, derating linearly above this temperature. The device features a maximum dynamic impedance of 29 Ω at a test current of 5.6 mA and a maximum reverse leakage current of 100 nA at 17 V. It utilizes an axial lead DO-35 package (CASE 017AG) and supports a junction temperature range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through avalanche breakdown characteristics in the reverse bias region.
• Features a hermetically sealed glass axial lead package designed for robust mechanical mounting.
• Supports high thermal stability with an extended operating junction temperature range.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape and reel packaging as specified in the official documentation. Confirm compliance with RoHS and halide-free requirements for the specific manufacturing lot. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability of the semiconductor components.

Single Zener Diodes Selection Notes

Select this component when a 22 V regulation point is required with tight tolerance constraints. Consider the 500 mW power rating and thermal derating curve for ambient conditions exceeding 50°C. Evaluate the 29 Ω dynamic impedance against circuit sensitivity requirements to ensure adequate noise performance during operation.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5252B series of Zener diodes manufactured by onsemi. The series covers a wide voltage range from 2.2 V to 24 V using standardized axial lead packages. The 1N5251B specifically targets the 22 V segment within this established product family.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering the 1N5251B designation in DO-35 packages. Verify electrical parameters such as Zener voltage tolerance and dynamic impedance match the original specifications before substitution.

Single Zener Diodes FAQ

What is the thermal derating rate for the 1N5251B?

The power dissipation must be derated at a rate of 4.0 mW/°C for temperatures above 50°C.

How is the Zener voltage measured?

The Zener voltage is measured with the device junction in thermal equilibrium at a lead temperature of 30°C ±1°C and a 3/8 inch lead length.