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1N4751AUR
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Product Detailed Parameters
- Description：DIODE ZENER 30V 1W DO213AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：30 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：40 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 22.8 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 Microchip Technology 1N4751AUR is a silicon planar Zener diode housed in the DO-213AB MELF package. It provides a nominal Zener voltage of 30V with a standard tolerance of 5%. The device is rated for a power dissipation of 1W and operates within a temperature range of -65°C to +175°C. This component is designed for surface-mount applications requiring high reliability.
Feature Summary
- Hermetically sealed glass encapsulation for environmental protection
- High-reliability construction suitable for demanding environments
- Surface-mount MELF form factor for automated assembly
Applications
- Voltage regulation in high-reliability circuits
- Reference voltage sources in aerospace systems
- Overvoltage protection in military electronics
Procurement Notes
Verify the specific manufacturer prefix (e.g., MQ, MX) associated with the 1N4751AUR designation to confirm screening levels and compliance status. Ensure the procurement documentation explicitly states the hermetic seal integrity and material composition. Cross-reference the JEDEC registration number to validate electrical parameters against official datasheets before integration into critical designs.
Selection Notes
Select this component when a hermetically sealed surface-mount Zener diode is required for high-temperature operation up to 175°C. The DO-213AB package offers a compact footprint compared to axial leads while maintaining robust thermal performance. Consider the 5% voltage tolerance and 1W power rating to ensure compatibility with the target circuit's regulatory requirements.
Part Context
This part belongs to the 1N47xx series of Zener diodes, widely recognized for stable voltage regulation. The 'UR' suffix typically indicates a reel-based packaging format for surface-mount technology. Microchip Technology continues the legacy of high-quality discrete semiconductors originally established by predecessors such as Microsemi and National Semiconductor.
Replacement Considerations
Electrically similar parts include the JEDEC registered 1N4751A series. Verify pinout compatibility and thermal characteristics when substituting with other manufacturers' MELF packages.
