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Product Detailed Parameters
- Description：DIODE CUR REG 100V 4.29MA 500MW
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Anode - Cathode (Vak)(Max)：100V
- Regulator Current (Max)：4.29mA
- Voltage - Limiting (Max)：2.6V
- Power - Max：500mW
- Applications：-
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：DO-213AB, MELF (Glass)
- Supplier Device Package：DO-213AB (MELF, LL41)
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N5312UR-1E3 is a surface-mount current regulator diode housed in the DO-213AB (MELF) glass package. It provides a nominal regulating current of 4.29 mA with standard 10% tolerance limits ranging from 3.86 mA to 4.72 mA. The device supports a maximum working peak voltage of 100 V and dissipates up to 500 mW of power. It operates within a junction temperature range of -65 °C to +150 °C, ensuring stable current regulation across broad voltage and temperature variations.
Feature Summary
- JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
- High source impedance for effective current regulation
- Internal metallurgical bond construction
- Leadless package design suitable for surface mount applications
Applications
- Constant current sources for LED biasing
- Current limiting protection circuits
- Voltage reference stabilization components
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm compliance requirements. The base part number indicates commercial grade availability, while other suffixes may denote military or radiation-hardened qualifications. Confirm RoHS status and packaging options directly with the manufacturer or authorized distributors before procurement.
Selection Notes
Select this component when a fixed current sink is required over a wide voltage range. Ensure the circuit voltage does not exceed the 100 V peak operating limit. Verify that the thermal environment allows for proper heat dissipation within the specified junction temperature range. Consider the DO-213AB package dimensions for PCB layout compatibility.
Part Context
This device belongs to the 1N5283UR-1 through 1N5314UR-1 family of current regulator diodes. These devices serve as counterparts to Zener diodes by regulating current rather than voltage. The series offers a selection of currents from 0.22 mA to 10.0 mA in various packages including axial-leaded and surface-mount configurations.
Replacement Considerations
Direct equivalents include the 1N5312UR-1 and other variants within the 1N5283UR-1 to 1N5314UR-1 series. Cross-reference with MIL-PRF-19500/463 qualified parts such as JANTX1N5311UR-1 if military specifications are required. Verify electrical parameters match the specific application needs.
