1N4685 (DO35)

Single Zener Diodes Overview

The Microsemi Corporation 1N4685 is a silicon unidirectional voltage regulator diode housed in a DO-35 glass axial-lead package. It provides a nominal Zener voltage of 3.6 V with a maximum power dissipation rating of 0.5 W at +50°C. The device features a double slug construction and metallurgical bonding for enhanced reliability. It operates within a temperature range of -65°C to +175°C, supporting storage conditions across the same span. The component utilizes a low operating current design suitable for precision regulation applications.

Single Zener Diodes Feature Summary

• Double slug type construction for structural integrity
• Metallurgically bonded internal connections
• Hermetically sealed glass encapsulation

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source when procuring this component, as multiple vendors including CDI-Diode and ON Semiconductor produce identical JEDEC part numbers. Confirm whether the unit includes an internal metallurgical bond suffix if required by the design specification. Ensure the package matches the DO-35 or DO-204AH standard before integration into the assembly process.

Single Zener Diodes Selection Notes

Select this component for applications requiring a stable 3.6 V reference point with moderate power handling capabilities. The DO-35 package offers a compact form factor suitable for through-hole mounting. Consider the operating temperature range and power derating requirements when designing the thermal management strategy for the final assembly.

Single Zener Diodes Part Context

This device belongs to the 1N4678 series of 500 mW glass Zener diodes. The series covers a wide voltage range from 1.8 to 200 volts. These components are widely used in general-purpose electronics for voltage clamping and regulation tasks due to their standardized packaging and reliable performance characteristics.

Single Zener Diodes Replacement Considerations

Equivalent parts include the CDI-Diode 1N4685 and ON Semiconductor 1N4685CTA. Verify package compatibility and electrical tolerances before substitution.