1N5251B-TR

Single Zener Diodes Overview

The Vishay 1N5251B-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides a nominal Zener voltage of 22 V with a standard tolerance of ±5%. The device dissipates up to 500 mW at thermal equilibrium and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum reverse leakage current of 0.1 µA, a dynamic resistance of 29 Ω, and a test current of 5.6 mA.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for high stability and sharp reverse characteristics
• Features low reverse leakage current levels for precise voltage regulation
• Standardized ±5% voltage tolerance designated by the 'B' suffix

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the required tolerance suffix. Confirm the package type corresponds to DO-35 (DO-204AH). Ensure the application environment remains within the specified thermal limits. Validate compliance requirements against the material categorization documentation provided by the manufacturer.

Single Zener Diodes Selection Notes

Select this component when a 22 V reference with ±5% accuracy is required. Consider the 500 mW power dissipation limit relative to ambient temperatures. Evaluate the 29 Ω dynamic resistance for circuit sensitivity. Verify compatibility with through-hole assembly processes using the DO-35 footprint.

Single Zener Diodes Part Context

This part belongs to the Vishay 1N5221 to 1N5267 series of small signal Zener diodes. The series covers a wide voltage range from 2.4 V to 75 V. Variants are available in different packages including MiniMELF, SOT-23, and SOD-123. The 'B' suffix indicates the standard ±5% tolerance class.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same Vishay series include 1N5251B-TAP for tape-and-reel or ammopack variations. Other manufacturers may offer equivalent specifications under different designations, but datasheet parameters must be cross-referenced.