JAN1N6343

Single Zener Diodes Overview

The JAN1N6343 is a military-qualified Zener voltage regulator diode from the 1N6309 through 1N6355 series, manufactured by Microchip Technology. It features a hermetically sealed voidless-glass package with internal metallurgical bonds and operates within a junction temperature range of -65°C to +175°C. The device provides a nominal Zener voltage of 62V with a standard tolerance of ±5%. It dissipates up to 0.5W at a lead temperature of 75°C and exhibits a maximum dynamic impedance of 125 ohms at the test current of 2mA.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs for high-reliability environments
• Internal metallurgical bonding compliant with MIL-PRF-19500/533 standards
• Inherently radiation-hardened design suitable for harsh operating conditions
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• High-reliability aerospace systems where component failure is not tolerated
• Military-grade voltage regulation circuits requiring broad operating temperature stability
• Radiation-hardened electronic subsystems in space or defense applications

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level (JAN, JANTX, JANTXV) and voltage tolerance. Confirm RoHS compliance status if applicable, as commercial versions may differ from military specifications. Ensure the package type aligns with the intended mounting configuration before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a robust, hermetically sealed Zener diode is required for critical military or aerospace applications. Consider the 62V nominal rating and 125 ohm dynamic impedance against circuit requirements. Evaluate thermal derating curves based on the expected ambient temperature and power dissipation limits to ensure reliable operation within the specified junction temperature range.

Single Zener Diodes Part Context

This part belongs to the industry-standard 1N6309 through 1N6355 series of 0.5-watt Zener voltage regulators. The series offers extensive voltage selections ranging from 2.4V to 200V with various tolerance options. It serves as the axial-lead equivalent to surface-mount MELF packages, providing flexibility in PCB layout while maintaining high-reliability performance standards.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent substitutes include JAN1N6343, JANTX1N6343, and JANTXV1N6343. Verify that any replacement maintains the same MIL-PRF-19500/533 qualification level and hermetic sealing characteristics to ensure compatibility with existing high-reliability designs.