1N4461D

Single Zener Diodes Overview

The Microchip Technology 1N4461D is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.8 V and a maximum impedance of 2.5 Ohms. The component utilizes a DO-35 axial through-hole package, suitable for standard printed circuit board mounting. It operates within a temperature range of -65°C to +175°C junction temperature. The device is characterized by a test current of 37 mA and a maximum reverse leakage current of 5 uA at specified conditions.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction with void-less internal metallurgical bond
• Military qualification compliant with MIL-PRF-19500/406 standards
• High reliability design intended for critical applications where failure is not tolerated

Single Zener Diodes Applications

• Voltage reference circuits in military avionics systems
• Overvoltage protection stages in aerospace instrumentation
• Precision voltage regulation in high-reliability industrial control equipment

Single Zener Diodes Procurement Notes

Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as the base part number may have suffixes indicating different reliability grades. Confirm that the hermetic seal integrity meets your environmental requirements. Ensure the ordering documentation explicitly references MIL-PRF-19500/406 compliance if military-grade performance is mandated for your system validation.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, surface-mount equivalent of the JEDEC registered series is needed but through-hole mounting is preferred. Consider the 2.5 Ohm impedance for low-noise regulation needs. Evaluate the 175°C junction temperature limit against your thermal management strategy. Compare against other Zener voltages in the 1N4460US–1N4496US series if alternative regulation points are required.

Single Zener Diodes Part Context

This device belongs to the 1N4460US–1N4496US series of 1.5 Watt glass Zener diodes manufactured by Microchip Technology (formerly Microsemi). These components are industry-recognized for their robust construction and are available in various tolerance levels including 5%, 2%, and 1%. The series offers Zener selections ranging from 3.3 to 200 volts, catering to diverse voltage regulation requirements in demanding environments.

Single Zener Diodes Replacement Considerations

Direct substitutes include other military-qualified Zener diodes meeting MIL-PRF-19500/406 specifications with identical 6.8 V nominal voltage and DO-35 packaging. Verify pinout compatibility and thermal characteristics before substitution. Commercial equivalents lacking hermetic sealing should only be considered if environmental exposure is controlled.