1N5251C-TR

Single Zener Diodes Overview

The 1N5251C-TR is a silicon planar power Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 22 V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates in a DO-35 (DO-204AH) glass axial-leaded package and dissipates up to 500 mW at thermal equilibrium. Key electrical characteristics include a test current of 5.6 mA, a maximum reverse leakage current of 0.1 µA at 20 V, and a typical dynamic resistance of 29 Ω at the test current.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Offers high precision with a standard ±2% Zener voltage tolerance
• Constructed in a hermetically sealed glass DO-35 axial package

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the specific suffix requirements for the desired tolerance level. Confirm the reel specifications align with automated assembly equipment capabilities. Ensure compliance with material categorization definitions provided in the manufacturer documentation before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a precise 22 V reference is required with minimal deviation from the nominal value. The ±2% tolerance makes it suitable for applications demanding tighter accuracy than standard ±5% variants. Consider the thermal resistance and lead length constraints when designing the PCB layout for optimal heat dissipation.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes. The series covers a wide range of voltages from 2.4 V to 75 V. The 'C' suffix specifically denotes the tighter tolerance variant within this family, distinguishing it from the standard 'B' suffix parts which offer ±5% tolerance.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other 1N52xxC devices for different voltage levels. Cross-reference with Vishay's MiniMELF (TZM52xx) or SOT-23 (MMBZ52xx) equivalents if space constraints require alternative packaging solutions while maintaining similar electrical performance.

Single Zener Diodes FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix indicates that the Zener diode has a standard voltage tolerance of ±2%, providing higher precision compared to the standard ±5% tolerance found in 'B' suffix versions.

What is the maximum power dissipation rating?

The maximum power dissipation is 500 mW at an ambient temperature of 25 °C, assuming the leads are kept at a constant temperature.