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1N4729UR-1
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Product Detailed Parameters
- Description：DIODE ZENER 3.6V 1W DO213AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：3.6 V
- Tolerance：±10%
- Power - Max：1 W
- Impedance (Max) (Zzt)：10 Ohms
- Current - Reverse Leakage @ Vr：100 µA @ 1 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Surface Mount
- Package / Case：DO-213AB, MELF (Glass)
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The 1N4729UR-1 is a high-reliability Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 3.6V with a tolerance of 5%. The device is designed for a maximum power dissipation of 1W and utilizes silicon as the semiconductor material. It is housed in a hermetically sealed DO-213AB MELF-2 glass package, ensuring isolation and robust performance in demanding environments.
Feature Summary
- Hermetically sealed glass construction for enhanced environmental protection
- High reliability design suitable for critical applications
- Unidirectional configuration for stable voltage regulation
Applications
- Military aerospace systems requiring radiation hardness
- Spacecraft electronic subsystems
- High-reliability industrial control circuits
Procurement Notes
Verify the specific revision level and lot traceability documentation upon order confirmation. Ensure that the procurement channel is authorized to handle military-grade components. Confirm that the delivered units match the exact part number suffix requirements for your specific application constraints.
Selection Notes
Select this component when hermetic sealing and high reliability are mandatory. The 1W power rating supports moderate current loads. The DO-213AB package requires appropriate surface mount or specialized through-hole mounting techniques. Verify thermal management capabilities within the final assembly design.
Part Context
This component belongs to the 1N4729 series of Zener diodes produced by Microchip Technology under its Microsemi division heritage. It is part of a broader family of high-reliability discrete semiconductors designed for defense and aerospace markets where standard commercial parts are insufficient.
Replacement Considerations
Direct substitutes include other hermetically sealed Zener diodes from qualified manufacturers such as JANTX or JAN variants within the same voltage class. Cross-reference must confirm identical package dimensions, pinout, and hermetic seal integrity.
