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1N4740AUR-1/TR
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Product Detailed Parameters
- Description：DIODE ZENER 10V 1W DO213AB
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：10 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：7 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 7.6 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 1N4740AUR-1/TR is a single Zener diode voltage regulator designed for surface mount applications. It features a nominal Zener voltage of 10 V with a tight tolerance of +/- 2%. The device operates in a DO-213AB (MELF) glass package and dissipates up to 1 W of power. Key electrical characteristics include a maximum reverse leakage current of 10 uA, a Zener impedance of 7 ohms, and a test current of 25 mA. It supports an operating temperature range from -65 C to +150 C.
Feature Summary
- Provides precise voltage regulation with a 10 V nominal output and high accuracy tolerance.
- Utilizes a compact MELF glass package suitable for automated surface mount assembly.
- Engineered for stable operation across a wide industrial temperature spectrum.
Applications
- Precision voltage reference circuits
- Overvoltage protection stages
- Voltage clamping applications
Procurement Notes
Verify the specific suffix UR-1 against the manufacturer datasheet to confirm the exact mechanical dimensions and tape-and-reel specifications. Ensure the DO-213AB footprint matches the target PCB design. Confirm RoHS compliance status directly with the supplier documentation prior to final procurement decisions.
Selection Notes
Select this component when a low-profile surface mount Zener diode is required for space-constrained designs. The 10 V rating and 2% tolerance make it suitable for sensitive analog references. Compare thermal dissipation requirements against the 1 W limit and ensure the MELF package handling capabilities align with the manufacturing process.
Part Context
This part belongs to the 1N4740 series of Zener diodes manufactured by Microchip Technology. While the standard 1N4740A is available in axial DO-41 packages, the AUR variant specifically denotes the surface mount MELF configuration. This series is widely used for general-purpose voltage regulation tasks requiring reliable performance in compact electronic assemblies.
Replacement Considerations
Cross-reference with Vishay 1N4740A-TR or onsemi 1N4740A for functional equivalents, noting that package types differ between axial and surface mount options. Verify pinout compatibility and thermal characteristics before substituting.
