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1N4622/TR
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Product Detailed Parameters
- Description：DIODE ZENER 3.9V 500MW DO7
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：3.9 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：1650 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 2 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Voltage - Forward (Vf) (Max) @ If：1.1 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N4622/TR is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9V with a tolerance of ±5%. The device has a maximum power dissipation of 500mW and operates within a temperature range of -65°C to +175°C. Packaged in the DO-35 (DO-7) axial leaded format, it exhibits a low reverse leakage current of 5µA at rated voltage.
Feature Summary
- Hermetically sealed glass construction suitable for harsh environments
- Low noise performance optimized for sensitive signal circuits
- High thermal stability supporting extended operating temperatures
Applications
- Precision voltage reference circuits
- Overvoltage protection stages
- Clamping applications in analog signal paths
Procurement Notes
Verify that the specific suffix /TR indicates tape and reel packaging rather than bulk. Confirm RoHS compliance status as historical data suggests potential non-compliance variants. Ensure the supplier provides official Microchip documentation matching the exact part number to avoid confusion with similar 1N4622 series components.
Selection Notes
Select this component when a stable 3.9V reference is required in space-constrained through-hole designs. Consider the 500mW power rating for thermal management. Verify compatibility with existing DO-35 footprints. Evaluate leakage current specifications against circuit sensitivity requirements before finalizing the design.
Part Context
This component belongs to the standard 1N4622 series of low-power Zener diodes manufactured by Microchip Technology. It shares the electrical characteristics of the military-grade JAN1N4622C but utilizes commercial packaging. The series is widely recognized for reliable voltage regulation in industrial and aerospace electronics.
Replacement Considerations
Direct substitutes include the 1N4622 without the /TR suffix for bulk packaging needs. Cross-reference with JAN1N4622C for hermetic sealing requirements. Verify pinout and package dimensions match DO-35 standards before integration.
