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1N4741UR-1
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Product Detailed Parameters
- Description：DIODE ZENER 11V 1W DO213AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：11 V
- Tolerance：±10%
- Power - Max：1 W
- Impedance (Max) (Zzt)：8 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 8.4 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 1N4741UR-1 is a surface-mount Zener diode designed for voltage regulation applications. It utilizes a DO-213AA-2 package, also known as MELF-2, with dimensions of 5.2 mm in length and 2.66 mm in diameter. The device features a power dissipation rating of 1 W and operates within a temperature range from -65 °C to +175 °C. It exhibits a forward voltage of 1.2 V and maintains a voltage tolerance of 10%.
Feature Summary
- Surface mount construction utilizing a glass encapsulated MELF-2 package for compact integration.
- High thermal stability enabling operation across an extended industrial temperature range up to 175 °C.
- Internal metallurgical bonding between the die and metal slugs to ensure structural reliability.
Applications
- Voltage regulation in high-reliability electronic circuits
- Overvoltage protection in surface-mount assemblies
- Reference voltage generation in precision measurement systems
Procurement Notes
Verify that the specific part number suffix matches the required tolerance and screening level. Confirm package compatibility with the intended PCB footprint. Check for RoHS compliance status if restricted substances are prohibited in the final assembly. Ensure storage conditions align with the manufacturer's guidelines for hermetically sealed components.
Selection Notes
Select this component when a 1 W surface-mount Zener regulator is required. The DO-213AA-2 package offers a direct replacement for through-hole equivalents in space-constrained designs. Consider the 10% voltage tolerance and 175 °C maximum operating temperature against circuit requirements. Evaluate the low unit weight for applications where mass is a critical factor.
Part Context
This component belongs to the 1N47xx series of Zener voltage regulators manufactured by Microchip Technology. The series provides various voltage options in both through-hole and surface-mount configurations. The UR-1 designation indicates a specific surface-mount variant optimized for automated assembly processes while maintaining high reliability standards.
Replacement Considerations
Direct replacements include other 1N4741 variants in compatible packages such as DO-213AB. Verify electrical parameters including Zener voltage and power dissipation before substitution. Ensure the alternative component meets the same temperature and reliability specifications.
