TZM5251B-GS18

Single Zener Diodes Overview

The TZM5251B-GS18 is a single Zener diode from the Vishay TZM series, housed in a MiniMELF (SOD-80) surface-mount package. It provides a nominal Zener voltage of 22 V with a standard tolerance of ±5%. The device operates at a test current of 5.6 mA and dissipates up to 500 mW of power. Key electrical characteristics include a maximum dynamic resistance of 29 Ω and a reverse leakage current of less than 0.1 μA at 17 V. It features a temperature coefficient of +0.087 %/K and supports an operating junction temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Very sharp reverse characteristic for precise voltage regulation
• Very high stability over time and operating conditions
• Low reverse current level ensuring minimal leakage
• Standard Zener voltage tolerance of ±5%

Single Zener Diodes Applications

• Voltage stabilization

Single Zener Diodes Procurement Notes

Verify that the ordering suffix GS18 corresponds to the specific tape-and-reel packaging configuration required for your automated assembly line. Confirm that the component meets RoHS3 compliance standards if mandated by your regional regulations. Ensure the supplier documentation explicitly references document number 85609 to validate the technical specifications provided.

Single Zener Diodes Selection Notes

Select this component when a stable 22 V reference is needed in a compact SOD-80 footprint. Consider the positive temperature coefficient of +0.087 %/K for thermal compensation requirements. Evaluate the 500 mW power dissipation limit against expected ambient temperatures to ensure safe operation within the specified junction temperature range.

Single Zener Diodes Part Context

This part belongs to the TZM5221 to TZM5267 series of small signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series offers a wide range of nominal voltages from 2.4 V to 75 V, all sharing identical physical dimensions and general electrical performance profiles suitable for general-purpose voltage regulation tasks.

Single Zener Diodes Replacement Considerations

The datasheet states that electrical data is identical to the 1N5251B device. Designers may consider 1N5251B equivalents if pin compatibility and package form factor are verified.