1N5225B

Single Zener Diodes Overview

The Microchip Technology 1N5225B is a 0.5-watt glass axial-lead Zener diode housed in a DO-35 package. It provides a nominal Zener voltage of 3.0 V with a standard tolerance of ±5%, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 100 µA at 2.0 V. Electrical characteristics include a test current of 20 mA, a maximum Zener impedance of 1600 Ohms at 100 µA, and a voltage temperature coefficient of -0.075 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance for high-frequency applications
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge (ESD)

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the manufacturer origin, as the datasheet identifies Microsemi Scottsdale Division while other sources list Microchip Technology. Confirm the specific suffix requirements for tolerance and screening levels. Ensure the component meets RoHS compliance if required by checking for the e3 suffix. Validate that the DO-35 package dimensions match your PCB layout constraints before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 3.0 V reference is needed with tight ±5% tolerance. Consider the negative temperature coefficient for thermal stability analysis. The DO-35 through-hole package is suitable for general-purpose board mounting. Evaluate the power derating curve if operating above 25°C ambient temperature to ensure safe dissipation limits are not exceeded.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V. Standard tolerances are available in ±5% (B suffix) and ±10% (A suffix), with tighter options like ±2% (C suffix) also offered. These devices are JEDEC registered and widely used in discrete semiconductor applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5225B from other manufacturers such as Vishay General Semiconductor. Verify that replacement components maintain the same DO-35 package, 3.0 V nominal voltage, and ±5% tolerance specifications.