1N5274B

Single Zener Diodes Overview

The Microchip Technology 1N5274B is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 130 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 1100 μA at 94 V. Its electrical characteristics include a test current of 0.95 mA, a maximum Zener impedance of 4500 Ω at 0.25 mA, and a positive voltage temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for durability
• Capable of regulating voltage across a broad operating current and temperature range
• Inherently radiation hard per MicroNote 050
• Minimal capacitance suitable for high-frequency applications

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference voltages
• Overvoltage protection in electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required JEDEC registration and tolerance suffix. Confirm the manufacturer origin, as this component was originally produced by Microsemi Scottsdale Division. Ensure compliance with any specific military screening requirements if applicable to the design, noting that prefixes like MQ or MX indicate different screening levels.

Single Zener Diodes Selection Notes

Select this component when a precise 130 V regulation point is needed within a 0.5 W power dissipation limit. The ±5% tolerance makes it suitable for general-purpose regulation where tighter tolerances are not critical. Consider the positive temperature coefficient for thermal stability analysis in environments exceeding 25°C ambient temperature.

Single Zener Diodes Part Context

This device belongs to the popular 1N5221 through 1N5281B series of Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V in the standard DO-35 glass axial-lead package. These components are widely used in industrial and commercial electronics for basic voltage referencing and protection tasks.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5274B devices meeting the same JEDEC specifications. Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package. Verify pinout compatibility and thermal derating curves when substituting.

Single Zener Diodes FAQ

What is the voltage temperature coefficient for the 1N5274B?

The voltage temperature coefficient is +0.110 %/°C.

Is the 1N5274B sensitive to electrostatic discharge?

No, the device is nonsensitive to ESD according to MIL-STD-750 Method 1020.