JAN1N6320US

Single Zener Diodes Overview

The JAN1N6320US is a military-qualified Zener voltage regulator from the 1N6309US through 1N6355DUS series, manufactured by Microchip Technology. It operates within a junction and storage temperature range of -65°C to +175°C and features a steady-state power dissipation of 0.5 W at an end cap temperature of 150°C. The device exhibits a nominal Zener voltage (VZ) of 6.8 V with a standard tolerance of ±5%, tested at a current (IZ) of 20 mA. Its dynamic impedance (ZZ) is 3 ohms at this test point, while the maximum reverse leakage current (IR) is specified as 2 µA at 25°C and 50 µA at 150°C. The unit utilizes a B-SQ MELF package with Category III metallurgical bonds.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction utilizing internal Category III metallurgical bonds for high reliability.
• Qualified per MIL-PRF-19500/533 standards, ensuring robustness in environments where failure cannot be tolerated.
• Inherently radiation hard and non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020.

Single Zener Diodes Applications

• High-reliability aerospace systems requiring radiation hardness.
• Military electronics demanding strict environmental stability.
• Precision voltage regulation circuits operating across wide temperature ranges.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level and voltage tolerance. Confirm compliance requirements such as RoHS status, noting that compliant versions are available only on commercial grades. Ensure the procurement documentation explicitly references MIL-PRF-19500/533 qualification to guarantee the component meets the necessary military specifications for the intended application.

Single Zener Diodes Selection Notes

Select the JAN1N6320US when a 6.8 V reference is needed in a surface-mountable form factor equivalent to the axial 1N6320. Consider the thermal resistance characteristics, specifically the junction-to-end cap value of 35 °C/W, for proper heat dissipation design. Evaluate the positive temperature coefficient of +0.062 %/°C to ensure it aligns with the circuit's stability requirements over the full operating temperature range.

Single Zener Diodes Part Context

This component belongs to the industry-recognized 1N6309US through 1N6355DUS series of 0.5 W Zener diodes. The series offers extensive selections ranging from 2.4 V to 200 V with various tolerance options. The JAN1N6320US represents the specific 6.8 V variant within this lineup, packaged in the B-SQ MELF format to provide a compact surface mount solution for space-constrained designs.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' equivalents of the 1N6320 series in MELF packages. Verify that any substitute maintains the same hermetic sealing, metallurgical bond category, and MIL-PRF-19500/533 qualification if military-grade reliability is required.