1N5274B-1

Single Zener Diodes Overview

The Microchip Technology 1N5274B-1 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 130V with a tolerance of ±5%. The device is rated for a power dissipation of 500mW and operates within a temperature range of -65°C to +175°C. Packaged in the DO-204AH (DO-35) axial leaded format, it exhibits a maximum reverse leakage current of 100nA and a Zener impedance of 1100 Ohms at the test current. This component provides stable voltage reference capabilities in through-hole circuit designs.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a 130V nominal breakdown voltage
• Operates reliably across an extended industrial temperature range up to 175°C
• Utilizes hermetically sealed glass construction for environmental protection
• Offers low leakage current characteristics for efficient standby performance

Single Zener Diodes Applications

• Voltage reference circuits requiring stable high-voltage rails
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications in analog signal processing paths
• Power supply regulation modules utilizing through-hole mounting

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as the base part number may refer to non-hermetic variants while the -1 suffix indicates hermetic sealing per military standards. Confirm package compatibility with existing PCB footprints, as DO-35 dimensions are standard but lead spacing must match assembly requirements. Ensure thermal management strategies account for the 500mW power rating under worst-case ambient conditions to maintain reliability within the specified operating temperature range.

Single Zener Diodes Selection Notes

Select this component when a high-voltage Zener reference is required in a ruggedized environment. The 130V rating suits applications needing isolation or level shifting above common low-voltage regulators. Consider the 1100 Ohm impedance if line regulation precision is critical for the load. The hermetic seal makes it suitable for aerospace or defense contexts where moisture ingress must be prevented. Evaluate thermal derating curves if continuous operation near maximum temperature is anticipated.

Single Zener Diodes Part Context

This device belongs to the 1N52xx series of Zener diodes manufactured by Microchip Technology. The series covers a wide voltage range from 2.4V to 200V in the 500mW power class. The 1N5274B-1 specifically targets the 130V segment, offering a balance between voltage capability and power handling. It shares the DO-35 package form factor with other members of the family, ensuring mechanical interchangeability in legacy designs.

Single Zener Diodes Replacement Considerations

Cross-reference with 1N5274B for non-hermetic equivalents if environmental sealing is not required. Verify that substitute parts meet the same 130V ±5% tolerance and 500mW power dissipation ratings. Check that replacement components support the -65°C to +175°C operating temperature range to ensure system reliability.