The BCR402R is a constant current regulator diode from Infineon Technologies, designed to deliver a stable and consistent current supply regardless of fluctuations in input voltage or variations in load resistance. This device is commonly employed in LED lighting systems to ensure uniform brightness and safeguard against potential overcurrent damage.

Applications:

• LED lighting systems
• Current limiting applications
• Constant current source circuits
• Linear regulation
• Sensor circuits requiring stable current

Features:

• Constant Current Regulation: Maintains a steady current output, crucial for LED lifespan and performance.
• Wide Input Voltage Range: Capable of operating efficiently across a broad range of input voltages.
• Compact SOT-23 Package: Facilitates use in space-constrained applications.
• Integrated Over-Temperature Protection: Enhances device reliability by preventing thermal runaway.
• High Accuracy: Offers precise current regulation for consistent performance.

Benefits:

• Uniform LED Brightness: Ensures consistent and stable light output in LED applications, enhancing visual appeal.
• Overcurrent Protection: Prevents damage to LEDs and other circuit elements, extending lifespan.
• Simplified Circuit Design: Reduces complexity by minimizing the need for external current-limiting components.
• Enhanced System Reliability: Provides protection against voltage variations and fluctuating load conditions.
• Improved Energy Efficiency: Optimizes current flow to LEDs, contributing to overall system efficiency.

Additional Details:

The BCR402R is available in a compact SOT-23 package, making it ideal for applications where board space is limited. Key parameters include the fixed regulated current and the allowable operating voltage range, which are detailed in the manufacturer's datasheet. This device is widely used in various LED applications, including general lighting, automotive lighting, and display backlighting, where consistent and reliable current regulation is paramount for performance and longevity.