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Product Detailed Parameters
- Description：DIODE STD 400V 400MA DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：400 V
- Current - Average Rectified (Io)：400mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 400 mA
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：50 nA @ 400 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：DO-213AA
- Supplier Device Package：DO-213AA
- Operating Temperature - Junction：-65°C ~ 175°C
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Overview
The 1N647UR-1 is a surface-mount Zener diode manufactured by Microchip Technology, housed in the DO-213AA (SMB) package. It provides a nominal Zener voltage of 20 V with a 5% tolerance and a maximum reverse leakage current of 100 nA. The device features a Zener impedance of 22 Ohms at a test current of 12.5 mA and supports a power dissipation of 1 W. It operates reliably within an extended temperature range from -65°C to +175°C.
Feature Summary
- Provides stable voltage regulation via Zener breakdown characteristics for reference applications
- Engineered for high thermal stability across extreme industrial operating temperatures
- Designed for compact surface-mount integration using standard SMB footprints
Applications
- Voltage reference circuits requiring precise potential levels
- Overvoltage protection stages in sensitive electronic systems
- Clamping applications in signal conditioning paths
Procurement Notes
Verify component authenticity through authorized Microchip distributors or certified supply chain partners. Confirm that the received parts match the specified DO-213AA package and electrical parameters. Ensure storage conditions comply with manufacturer guidelines to maintain reliability before assembly.
Selection Notes
Select this component when a 20 V regulation point is required in space-constrained designs. The 1 W power rating and wide temperature range make it suitable for demanding environments. Verify that the 5% tolerance meets the specific circuit requirements for precision.
Part Context
This part belongs to Microchip's general-purpose Zener diode portfolio, designed for robust performance in industrial and commercial electronics. The 1N series designation indicates compliance with traditional JEDEC numbering standards while offering modern surface-mount packaging options for automated assembly.
Replacement Considerations
The GL34G/1 is documented as a similar replacement option. Note that the GL34G/1 is a rectifier diode rather than a Zener regulator; verify functional compatibility before substitution.
