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1N4687UR-1
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Product Detailed Parameters
- Description：DIODE ZENER 4.3V 500MW DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：4 µA @ 2 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Surface Mount
- Package / Case：DO-213AA
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 100 mA
- Grade：-
- Qualification：-
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Overview
The 1N4687UR-1 is a surface mount Zener diode manufactured by Microchip Technology, housed in the DO-213AA package. It serves as the surface mount equivalent of the JEDEC registered 1N4687 series. The device features an internal metallurgical bond for high reliability and operates within a temperature range of -65°C to +175°C.
Feature Summary
- Surface mount construction equivalent to the JEDEC registered 1N4678 through 1N4717 series
- Internal metallurgical bond between metal slugs and silicon die for enhanced structural integrity
- Available with military upgrade screening options referenced to MIL-PRF-19500
Applications
- Voltage regulation in surface mount circuit designs
- High-reliability electronic assemblies requiring metallurgically bonded components
- Military or aerospace applications utilizing MIL-PRF-19500 screened variants
Procurement Notes
Verify the specific voltage rating and tolerance class required for the application, as the 1N4687UR-1 designation indicates a specific breakdown voltage within the broader 1N4678UR-1 to 1N4717UR-1 family. Confirm whether standard commercial specifications or the higher-reliability MIL-PRF-19500 screening option is needed. Ensure the DO-213AA footprint matches the target PCB layout constraints.
Selection Notes
Select this component when a robust surface mount Zener diode is required for low-current regulation applications. The internal metallurgical bond offers superior mechanical stability compared to standard epoxy-bonded packages. Consider the -1 suffix variant if military-grade screening and traceability are mandatory for the end-use environment.
Part Context
This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5-watt glass surface mount Zener voltage regulators. These devices provide a selection of voltages from 1.8 to 43 volts. The series is characterized by a very low test current of 50 µA, which minimizes power consumption during regulation.
Replacement Considerations
The standard commercial version without the -1 suffix is the direct functional substitute. For axial lead equivalents, the DO-7 or DO-35 packaged versions of the 1N4687 series may be used if form factor changes are acceptable.
