1N6351

Overview

The Microchip Technology 1N6351 is a military-qualified Zener voltage regulator diode from the 1N6309 through 1N6355 series. It features a nominal Zener voltage of 130 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W at a lead temperature of 75°C. It utilizes a voidless hermetically sealed glass package with axial leads, offering robust construction suitable for high-reliability applications.

Feature Summary

• Hermetically sealed voidless-glass construction with internal metallurgical bonds
• Military qualification per MIL-PRF-19500/533 for high-reliability environments
• Inherently radiation hard and non-sensitive to electrostatic discharge

Applications

• High-reliability voltage regulation where failure cannot be tolerated
• Radiation-hardened electronic systems
• Broad operating current and temperature range stabilization

Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these levels are available per MIL-PRF-19500/533. Confirm whether RoHS compliance is necessary, noting that compliant versions are available on commercial grade only. Ensure the ordering suffix matches the desired voltage tolerance and termination finish specifications.

Selection Notes

Select this component when a stable 130 V reference is needed in harsh environments. The device supports tight voltage tolerances of 1% and 2% via specific part nomenclature. Consider the thermal resistance characteristics and power derating curves for proper heat dissipation design. Verify compatibility with existing axial-lead mounting terminals and PCB layout constraints.

Part Context

This device belongs to the industry-recognized 1N6309 through 1N6355 series of 0.5 watt Zener voltage regulators. The series provides selections from 2.4 to 200 volts and is available in both surface-mount MELF packages and axial-lead DO-35 configurations. It serves as a surface-mount equivalent to the JEDEC registered 1N6309 through 1N6355 series.

Replacement Considerations

Direct substitutes include other parts within the 1N6309 through 1N6355 series manufactured by Microchip Technology. Cross-manufacturer equivalents must match the 130 V nominal voltage, 0.5 W power rating, and hermetic sealing requirements.