1N5256B-T

Single Zener Diodes Overview

The Vishay 1N5256B-T is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides a nominal Zener voltage of 30 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 at 23 V, a dynamic resistance of 49 Ω at a test current of 4.2 mA, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Features a glass DO-35 axial leaded package for through-hole mounting
• Provides high stability with low noise performance

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code suffix matches the required packaging format. Confirm the specific tolerance designation aligns with circuit requirements. Ensure the component meets environmental compliance standards for the intended deployment region. Validate datasheet revisions against production batches.

Single Zener Diodes Selection Notes

Select this component when a 30 V reference is required in an axial leaded package. Consider the 500 mW power dissipation limit relative to ambient operating temperatures. Evaluate the dynamic impedance and leakage specifications against signal integrity requirements. Verify compatibility with existing PCB footprint dimensions.

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 MiniMELF, SOT-23, and SOD-123 surface mount packages alongside the DO-35 through-hole configuration.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5256B equivalents. Verify pinout orientation and package dimensional tolerances match the original design. Confirm electrical parameters such as breakdown voltage and power ratings meet or exceed the original specifications.