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Product Detailed Parameters
- Description：DIODE CUR REG 100V 1.32MA 500MW
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Anode - Cathode (Vak)(Max)：100V
- Regulator Current (Max)：1.32mA
- Voltage - Limiting (Max)：1.45V
- 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 1N5299UR-1 is a current regulator diode designed for surface-mount applications. It operates within the DO-213AB (MELF) glass package, specifically identified as LL41. The device provides a regulated current of 1.32 mA with a maximum anode-to-cathode voltage rating of 100 V. It features a power dissipation capacity of 475 mW and maintains a voltage limit of 1.45 V. This component belongs to the MIL-PRF-19500/463 military series, ensuring reliability in demanding environments.
Feature Summary
- Surface-mount construction utilizing a round-end MELF glass package for compact integration.
- Constant current regulation capability suitable for biasing and reference circuits.
- Military-grade qualification under MIL-PRF-19500/463 standards for enhanced durability.
Applications
- Biasing networks for transistors and operational amplifiers
- Current limiting protection in sensitive electronic circuits
- Reference current sources in precision measurement equipment
Procurement Notes
Verify the specific suffix UR-1 against the official Microchip datasheet to confirm the surface-mount MELF configuration and military grade classification. Ensure that the ordering documentation explicitly references the JAN prefix if space-qualified or high-reliability variants are required for the intended application environment.
Selection Notes
Select this component when a surface-mount current regulator is required instead of through-hole alternatives like the standard 1N5299. Confirm that the DO-213AB footprint matches the PCB layout constraints. Verify that the 1.32 mA regulation current aligns with the circuit design requirements before finalizing the bill of materials.
Part Context
This part is the surface-mount variant of the 1N5299 current regulator. While the base 1N5299 utilizes a DO-7 axial leaded package, the UR-1 designation indicates the MELF form factor. Both share similar electrical characteristics but differ significantly in mounting style and physical dimensions, catering to different assembly technologies.
Replacement Considerations
Direct substitutes include JANTX1N5299UR-1 and JANTXV1N5299UR-1 from Microchip, which offer varying levels of military screening within the same package and electrical specification profile.
