1N5259B-TR

Single Zener Diodes Overview

The Vishay 1N5259B-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides a nominal Zener voltage of 39 V with a standard tolerance of ±5%. The device operates at a test current of 3.2 mA and dissipates up to 500 mW of power. Key electrical parameters include a maximum dynamic resistance of 80 Ω, a reverse leakage current of 100 nA at 23 V, and a typical temperature coefficient of 0.094 %/K. It supports junction temperatures up to 175 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a standard ±5% Zener voltage tolerance designated by the 'B' suffix
• Designed for high thermal stability with a junction temperature rating up to 175 °C

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering code matches the required tolerance level, as the 'B' suffix denotes ±5% accuracy while 'C' indicates ±2%. Confirm that the DO-35 through-hole package aligns with the target PCB layout requirements. Ensure the 500 mW power dissipation capability meets the thermal design constraints of the final application environment.

Single Zener Diodes Selection Notes

Select this component when a precise 39 V reference is needed within a ±5% margin. The DO-35 package suits applications requiring axial leads for manual assembly or specific mechanical mounting. Consider the 80 Ω dynamic resistance for load regulation needs and verify that the operating current remains near the 3.2 mA test point for optimal voltage accuracy.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide Zener voltage range from 2.4 V to 75 V, all housed in the standardized DO-35 axial package. These devices are widely used in general-purpose electronic circuits requiring reliable voltage clamping and regulation.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same Vishay family include the 1N5258B-TR (36 V) and 1N5260B-TR (43 V). Cross-manufacturer replacements must match the 39 V nominal voltage, 500 mW power rating, and DO-35 package dimensions to ensure physical and electrical compatibility.