1N5256B-G

Single Zener Diodes Overview

The Comchip Technology 1N5256B-G is an axial leaded glass Zener diode with a nominal voltage of 30 V and a tolerance of ±5%. It dissipates 500 mW at 25°C, operating from -65°C to +175°C. The device features a maximum dynamic impedance of 49 Ω at a test current of 4.2 mA, with a forward voltage of 1.1 V at 200 mA. It utilizes a DO-35 package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in a hermetically sealed glass DO-35 package.
• Capable of 500 mW power dissipation for reliable operation under thermal stress.

Single Zener Diodes Applications

• Voltage stabilization circuits
• Overvoltage protection systems

Single Zener Diodes Procurement Notes

Verify the manufacturer designation as Comchip Technology CO., LTD. Confirm the part number suffix matches the specific RoHS-compliant variant. Ensure the component meets the required temperature range and power dissipation specifications for the intended application environment before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 30 V reference is required within a standard axial leaded form factor. Consider the 5% voltage tolerance and 49 Ω dynamic impedance for circuit precision requirements. Evaluate the thermal resistance characteristics against the expected ambient temperature conditions to ensure safe junction temperatures during operation.

Single Zener Diodes Part Context

This component belongs to the 1N5221B-G through 1N5267B-G series of axial leaded glass Zener diodes manufactured by Comchip Technology. The series covers a wide voltage range from 2.4 V to 75 V, offering standardized packaging and electrical characteristics for general-purpose voltage regulation applications across various electronic designs.

Single Zener Diodes Replacement Considerations

Equivalent parts include Vishay 1N5256B and Microchip 1N5256B. Verify that substitute components match the 30 V nominal voltage, 500 mW power rating, and DO-35 package dimensions to ensure mechanical and electrical compatibility.

Single Zener Diodes FAQ

What is the maximum reverse leakage current for the 1N5256B-G?

The maximum reverse leakage current is 0.1 μA at a reverse voltage of 47 V.

How does the power dissipation change with temperature?

Power dissipation must be derated above 75°C based on the thermal resistance curve provided in the datasheet.