JAN1N6318C

Single Zener Diodes Overview

The JAN1N6318C is a military-qualified Zener voltage regulator diode from the 1N6309 series, manufactured by Microchip Technology. It features a nominal Zener voltage of 5.6 V with a tight tolerance of ±2%. The device operates in a DO-35 axial leaded package and dissipates up to 500 mW at a lead temperature of 75 °C. Electrical characteristics include a maximum dynamic impedance of 8 ohms at a test current of 20 mA, a forward voltage of 1.4 V at 1 A, and a reverse leakage current of 5 µA at 2.5 V. It supports an operating junction temperature range from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability.
• Qualified per MIL-PRF-19500/533 standards for demanding environments.
• Inherently radiation hard as described in Microsemi documentation.

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Military and aerospace electronic systems.

Single Zener Diodes Procurement Notes

Verify that the component meets the specific JAN reliability level required for the application. Confirm compliance with MIL-PRF-19500/533 qualification standards. Ensure the ordering suffix matches the desired voltage tolerance and RoHS status, noting that commercial versions may differ from military specifications. Validate package dimensions against design constraints before procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 5.6 V reference is needed within a standard DO-35 footprint. The ±2% tolerance offers tighter control than standard 5% variants. Consider the thermal resistance values for derating calculations based on the specific mounting conditions. Verify that the operating environment does not exceed the specified junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N6309 through 1N6355D series of 500 mW glass Zener diodes. The 'JAN' prefix indicates a specific military reliability level, while the 'C' suffix denotes the ±2% voltage tolerance. Other available levels include JANTX, JANTXV, and JANS, alongside commercial grades.

Single Zener Diodes Replacement Considerations

Equivalent parts include JANS1N6318C, JANS1N6318D, and JANTX1N6318C. These share the same electrical profile but may vary in specific manufacturing lot qualifications or packaging details. Verify compatibility with existing board layouts and thermal management strategies.

Single Zener Diodes FAQ

What is the maximum surge current rating?

The maximum non-repetitive peak Zener surge current (IZSM) is 2.5 Amps for an 8.3 ms square wave.

How is polarity indicated?

Polarity is indicated by a band painted on the body of the diode, marking the cathode end.