The CL-221YGW-C is a bi-color LED lamp manufactured by Citizen Electronics. This LED features both yellow and green colors within a single package, allowing for versatile indication and illumination applications. It's designed for through-hole mounting and offers a wide viewing angle for easy visibility.

Applications

• Status indication in electronic devices
• Panel indicators
• Backlighting for displays
• Traffic lights and signals
• Amusement machines
• Automotive dashboard indicators

Features

• Dual color: Yellow and Green
• Package type: Through-hole
• Lens type: Diffused
• Forward voltage: Typically 2.0V for Green, 2.1V for Yellow
• Forward Current: Typically 20mA
• Luminous Intensity: Varies by color
• Wide Viewing Angle

Benefits

• Versatile Indication: Offers two colors in one package, simplifying circuit design and reducing component count.
• Easy to Mount: The through-hole package allows for easy manual or automated assembly.
• Clear Visibility: The diffused lens provides a wide viewing angle for easy identification of the indicator status.
• Low Power Consumption: LEDs are energy-efficient, reducing power consumption in electronic devices.
• Long Lifespan: LEDs offer a long operating life, ensuring reliable performance over time.

Additional Details

The diffused lens helps to distribute the light evenly, providing a uniform appearance. The luminous intensity varies depending on the color, with specific values listed in the datasheet. The forward voltage specifies the voltage required to turn on the LED, and the forward current indicates the current that flows through the LED when it is on. It is important to use appropriate current limiting resistors to prevent damage to the LED. The typical package is a 5mm through hole package.

This LED is commonly used in applications where clear and distinct indication of different states is required. For example, it can be used to indicate power status (green for on, yellow for standby) or alarm conditions (yellow for warning, green for normal).