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Product Detailed Parameters
- Description：DIODE CUR REG 50V 516UA 350MW
- Series：SST500
- Mfr：Linear Integrated Systems, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Anode - Cathode (Vak)(Max)：50V
- Regulator Current (Max)：516µA
- Voltage - Limiting (Max)：1.5V
- Power - Max：350mW
- Applications：-
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The SST502 is a silicon current regulating diode from the SST500 series, designed to maintain a constant forward current across a wide voltage range. It operates with a nominal forward current of 0.43 mA and requires no external biasing circuitry. The device features a peak operating voltage of 50 V and a maximum limiting voltage of 1.5 V at 25 °C. Packaged in a compact SOT-23-3L format, it supports junction temperatures from -55 °C to +150 °C. Key electrical parameters include a dynamic impedance of 2.7 MΩ and a knee impedance of 0.7 MΩ.
Feature Summary
- Maintains stable current regulation without requiring external biasing components or power supplies.
- Provides zero temperature coefficient performance for consistent operation across varying thermal conditions.
- Offers high dynamic and knee impedances to ensure effective current stability under load variations.
Applications
- Test instrumentation circuits
- Medical equipment biasing
- Sensor signal conditioning
Procurement Notes
Verify that the ordering suffix matches the required package type and compliance standards. Confirm the specific part number against the manufacturer's official documentation to ensure correct forward current ratings. Check RoHS status if environmental compliance is mandatory for your assembly process.
Selection Notes
Select this component when a precise, low-current source is needed without complex circuitry. Ensure the application voltage remains within the 50 V peak limit. Verify that the required current tolerance aligns with the specified minimum and maximum forward current values for the SST502 variant.
Part Context
This device belongs to the SST500 series of current regulating diodes manufactured by Linear Integrated Systems. The series replaces older Siliconix/Vishay SST502 equivalents. It is specifically engineered for surface-mount applications requiring reliable current control in space-constrained designs.
Replacement Considerations
Officially documented as a replacement for the Vishay/Siliconix SST502 series. Verify pinout compatibility and electrical parameter equivalence before substituting other generic current regulator diodes.
