The BCR401W is a constant current regulator diode manufactured by Infineon Technologies. It is designed to provide a stable and consistent current output regardless of variations in input voltage or load resistance. This device is commonly used in LED lighting applications to ensure consistent brightness and prevent damage from overcurrent.

Applications:

• LED lighting
• Current limiting circuits
• Constant current sources
• Linear regulators
• Sensor circuits

Features:

• Constant current regulation: Provides a stable and consistent current output.
• Wide input voltage range: Operates effectively across a range of input voltages.
• Small SOT-343 package: Enables compact circuit designs.
• Integrated protection: Includes over-temperature protection.
• High accuracy: Provides precise current regulation.

Benefits:

• Consistent LED brightness: Ensures stable and uniform light output in LED applications.
• Protection against overcurrent: Prevents damage to LEDs and other circuit components.
• Simplified circuit design: Reduces the need for complex current limiting circuitry.
• Increased system reliability: Protects against voltage fluctuations and load variations.
• Energy efficiency: Optimizes current flow to improve overall system efficiency.

Additional Details:

The BCR401W is typically supplied in a small SOT-343 package, making it suitable for space-constrained applications. Its key parameters include the regulated current level and the operating voltage range. The datasheet provides detailed specifications and application notes for optimal usage. This constant current regulator is widely used in various LED lighting solutions, including automotive lighting, general illumination, and display backlighting, where consistent and reliable current regulation is essential.