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Product Detailed Parameters
- Description：DIODE CUR REG 100V 2.2MA 500MW
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Anode - Cathode (Vak)(Max)：100V
- Regulator Current (Max)：2.2mA
- Voltage - Limiting (Max)：1.85V
- 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 1N5305UR-1 is a current regulator diode manufactured by Microchip Technology. It operates within a voltage range of up to 100V and provides a regulated current of 1.43mA. The device is rated for a maximum power dissipation of 500mW. It utilizes the DO-213AB (MELF) surface-mount package, specifically designed for round-end SMT applications. The component supports an extended operating temperature range from -65°C to +175°C junction temperature, ensuring reliability in demanding environments.
Feature Summary
- Provides stable current regulation without external components
- Utilizes metallurgically bonded construction for durability
- Supports high-temperature operation up to 175°C junction
Applications
- Constant current sources for LED driving
- Biasing circuits for transistors and active devices
- Current limiting protection in sensitive electronic circuits
Procurement Notes
Verify the specific suffix UR-1 against official Microchip documentation to confirm package type and compliance status. Ensure that the procurement channel provides valid traceability for this component series. Cross-reference the manufacturer part number with the latest datasheet to confirm availability and any potential obsolescence notices before finalizing orders.
Selection Notes
Select the 1N5305UR-1 when a fixed current of 1.43mA is required in a compact surface-mount form factor. Consider the 100V breakdown voltage and 500mW power rating for circuit design constraints. Evaluate the MELF package suitability for automated assembly processes and thermal management requirements in the target application environment.
Part Context
This component belongs to the 1N53xx series of current regulator diodes produced by Microchip Technology. These devices are engineered to maintain a constant current over a wide range of voltages. The UR-1 designation typically indicates a specific surface-mount variant within the broader family of current-regulating diodes used in industrial and commercial electronics.
Replacement Considerations
Direct substitutes include other 1.43mA current regulator diodes in similar packages. Verify electrical parameters such as regulated current tolerance, breakdown voltage, and power dissipation. Check for pinout compatibility and thermal characteristics to ensure seamless integration into existing designs without modification.
