The SST108 is a current regulator diode manufactured by Calogic, LLC. Also known as a current limiting diode or a constant current diode, this two-terminal device regulates current at a specified level, even with variations in voltage. It is used in a variety of applications to provide a stable and predictable current source.

Applications:

• LED current regulation
• Constant current sources
• Analog circuits
• Sensor excitation
• Battery charging circuits

Features:

• Constant current regulation
• Two-terminal device
• Wide voltage range
• Small size
• High impedance above regulation voltage

Benefits:

• Stable and predictable current source
• Simple circuit design
• Protection against voltage fluctuations
• Cost-effective solution
• Improved system reliability

Additional Details:

The SST108 operates by maintaining a constant current flow within a specific voltage range. Above this voltage range, the diode exhibits high impedance, effectively limiting the current. The current regulation is achieved through a specialized doping profile and internal construction. Key parameters include the regulation current (typically specified in milliamps), the minimum and maximum operating voltage, and the dynamic impedance. The device is commonly packaged in small through-hole or surface mount packages. The use of a current regulator diode such as the SST108 simplifies circuit design, as it eliminates the need for complex feedback loops and other components typically required to achieve constant current operation. Refer to the datasheet for detailed electrical characteristics and application guidelines.

The SST108 offers a simple and effective way to achieve constant current regulation in a variety of electronic circuits. Its stable performance, wide voltage range, and small size make it a valuable component in applications requiring a predictable and reliable current source.