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1N4745UR-1
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Product Detailed Parameters
- Description：DIODE ZENER 16V 1W DO213AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：16 V
- Tolerance：±10%
- Power - Max：1 W
- Impedance (Max) (Zzt)：16 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 12.2 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 1N4745UR-1 is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 16 V with a tolerance of 10%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65 °C to +175 °C. It utilizes the DO-213AA surface-mount package, which measures approximately 2.66 mm in diameter and 5.2 mm in length. The component is constructed using silicon and offers unidirectional polarity.
Feature Summary
- Surface mount construction compatible with automated assembly processes
- Extended thermal performance suitable for high-temperature environments
- High-reliability design utilizing metallurgical bonding techniques
Applications
- Voltage regulation in industrial control systems
- Over-voltage protection circuits in aerospace and defense equipment
- Reference voltage sources in harsh environment electronics
Procurement Notes
Verify the specific suffix UR-1 against official Microchip documentation to confirm the exact screening level and package variant. Ensure that the required operating temperature range and power dissipation ratings align with the system design constraints before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability.
Selection Notes
Select this component when a 16 V Zener reference is required in a compact surface-mount form factor. The 1N4745UR-1 is appropriate for designs demanding high reliability and wide temperature operation. Compare its 1 W power rating and 10% tolerance against circuit requirements to ensure adequate margin. Consider the DO-213AA footprint dimensions during PCB layout planning.
Part Context
This device belongs to the 1N4745 series of Zener diodes manufactured by Microchip Technology. The series provides various voltage options within a standardized package family. The UR-1 designation indicates a specific surface-mount configuration optimized for modern electronic manufacturing. These components are widely used in critical infrastructure where stability and durability are paramount.
Replacement Considerations
Consult official Microchip substitution guides for verified equivalents. Generic replacements may not match the specific reliability standards or thermal characteristics of the original component.
