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Product Detailed Parameters
- Description：DIODE CUR REG 350MW SOT23-3
- Series：SST500
- Mfr：Linear Integrated Systems, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Anode - Cathode (Vak)(Max)：-
- Regulator Current (Max)：-
- Voltage - Limiting (Max)：1.9V
- 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 SST510 is a current regulating diode from the SST500 series by Linear Integrated Systems, designed to maintain a stable forward current within a wide voltage range. It operates without external biasing (VGS = 0V) and features a SOT-23 3L package with pins 2 and 3 shorted. The nominal forward current is 3.6 mA, with a minimum of 2.9 mA and maximum of 4.3 mA. Dynamic impedance is typically 0.3 mΩ at VF = 25V, while knee impedance is 0.04 mΩ at VF = 6V. The limiting voltage ranges from 1.9 V to 3.9 V at IF = 0.8IF(min). Peak operating voltage is 50 V, continuous power dissipation is 350 mW, and junction temperature spans -55°C to 150°C.
Feature Summary
- Maintains constant current across a wide voltage range without requiring external bias circuits
- Replaces Siliconix/Vishay SST502 series components for improved performance consistency
- Operates with zero gate-source voltage (VGS = 0V)
- Provides low dynamic and knee impedance for precise regulation
Applications
- Test instrumentation current sources
- Medical device biasing circuits
- Sensor biasing applications
- LED driver circuits
Procurement Notes
Verify the specific part number SST510 against official Linear Integrated Systems documentation to confirm electrical tolerances and package configuration. Ensure that the ordering suffix matches the required RoHS compliance status if applicable. Confirm pinout requirements, specifically that pins 2 and 3 are shorted in the SOT-23 3L package. Cross-reference absolute maximum ratings with system voltage and current limits before procurement.
Selection Notes
Select the SST510 when a nominal forward current of 3.6 mA is required within the SST500 series. Consider the dynamic impedance of 0.3 mΩ and limiting voltage range of 1.9 V to 3.9 V for circuit design. Evaluate thermal derating requirements above 25°C, as continuous power dissipation decreases by 2.8 mW/°C. Ensure the application voltage remains below the 50 V peak operating limit.
Part Context
The SST510 belongs to the SST500 series of current regulating diodes manufactured by Linear Integrated Systems. This series offers a wide current range from 0.192 mA to 5.6 mA across multiple part numbers. The SST510 provides a mid-range current option suitable for applications requiring stable current sources without complex biasing networks. It is packaged in a compact SOT-23 3L form factor.
Replacement Considerations
The SST510 serves as a direct replacement for the Vishay/Siliconix SST502 series components. Verify compatibility with existing circuit designs when substituting these parts. Ensure that the current tolerance and impedance characteristics meet the original design specifications.
FAQ
How should pins 2 and 3 be connected in the SOT-23 3L package?
Pins 2 and 3 must be shorted together via a PCB trace or internal connection.
What is the maximum peak operating voltage for the SST510?
The maximum peak operating voltage (POV) is 50 V.
Does the SST510 require an external bias voltage to operate?
No, the SST510 operates without external biasing, functioning with VGS = 0V.
