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Product Detailed Parameters
- Description：DIODE ZENER 180V 500MW B-AXIAL
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：180 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：1500 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 137 V
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Through Hole
- Package / Case：B, Axial
- Voltage - Forward (Vf) (Max) @ If：1.4 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N6354 is a military-qualified Zener voltage regulator diode with a nominal breakdown voltage of 180V. It operates within a junction temperature range of -65°C to +175°C and features a steady-state power dissipation rating of 0.5W at a lead temperature of 75°C. The device exhibits a maximum reverse current of 10µA at 25°C and 80µA at 150°C, with a dynamic impedance of 1,500 ohms at the test current of 0.68mA. It is available in hermetically sealed DO-35 packages.
Feature Summary
- Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability
- Qualified per MIL-PRF-19500/533 for JAN, JANTX, JANTXV, and JANS levels
- Inherently radiation hard and non-sensitive to electrostatic discharge
Applications
- High-reliability aerospace and defense circuits
- Voltage regulation in extreme temperature environments
- Critical systems where component failure cannot be tolerated
Procurement Notes
Verify that the specific ordering suffix matches the required reliability level (JAN, JANTX, JANTXV, or JANS) and voltage tolerance. Confirm package type availability, as surface-mount options exist under different part numbers. Ensure compliance requirements align with project specifications, noting that RoHS compliance applies only to commercial grade versions.
Selection Notes
Select this component when a robust, radiation-hardened Zener diode is required for critical applications. Consider the thermal resistance characteristics and derating curves for proper heat management. Verify that the 180V breakdown voltage and 0.5W power rating meet the circuit design constraints before finalizing the selection.
Part Context
This component belongs to the 1N6309 through 1N6355 series of 0.5W glass Zener diodes. The series offers extensive voltage selections from 2.4V to 200V with standard and tight tolerances. These industry-recognized regulators are designed for axial-lead mounting and provide flexible terminal options for various PCB layouts.
Replacement Considerations
Direct replacements must match the 180V Zener voltage, 0.5W power rating, and MIL-PRF-19500/533 qualification level. Verify that any substitute maintains the same hermetic sealing and radiation hardness characteristics required for the application.
