1N5221B-G

Single Zener Diodes Overview

The Comchip Technology 1N5221B-G is a unidirectional silicon voltage regulator diode housed in the DO-35 glass axial leaded package. It provides a nominal Zener voltage of 2.4 V at a test current of 20 mA, with a maximum dynamic impedance of 30 Ω and a maximum reverse leakage current of 100 μA. The device supports a maximum power dissipation of 500 mW at 25°C ambient temperature and operates within a junction temperature range up to 175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single unidirectional silicon structure.
• Features a glass encapsulated DO-35 case with polarity indicated by a cathode band.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping applications

Single Zener Diodes Procurement Notes

Verify that the component matches the specific 1N5221B-G designation for a 2.4 V Zener voltage. Confirm compliance with RoHS standards as specified in the datasheet. Ensure the DO-35 through-hole package aligns with the intended PCB layout requirements before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 2.4 V reference or protection level is required in low-power designs. Consider the 500 mW power dissipation limit and thermal resistance characteristics for proper heat management. Verify that the 30 Ω dynamic impedance meets the circuit's stability requirements under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the 1N5221B-G through 1N5267B-G series of axial leaded glass Zener diodes manufactured by Comchip Technology. The series covers a wide range of nominal voltages from 2.4 V to 75 V, all sharing the same DO-35 package and 500 mW power rating specifications.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering standard 1N5221B equivalents. Ensure substitute parts maintain the 2.4 V nominal voltage, 500 mW power rating, and DO-35 package dimensions for direct compatibility.

Single Zener Diodes FAQ

What is the maximum dynamic impedance for the 1N5221B-G?

The maximum dynamic impedance (ZzT) is 30 Ω at a test current of 20 mA.

How is the polarity identified on the 1N5221B-G?

Polarity is indicated by a cathode band marked on the glass body of the diode.