2mm Round Type Bi-Color LED Lamps (3 Leads) – Compact Dual-Color Lighting for Modern Electronics

The 2mm round bi-color LED lamp with 3 leads is a compact, versatile, and energy-efficient lighting component designed for modern electronic systems that require multi-status indication in a small footprint. With dual-color output stored in a single round lens, this LED supports flexible visual communication, space-efficient circuit design, and low-power operation—all essential features for today’s consumer electronics, industrial controls, automotive dashboards, and smart devices.

The 3-lead structure, available in either common anode or common cathode, allows engineers to easily manage two distinct colors without increasing PCB size. Offered with multiple lens types—diffused, transparent, and water clear—and various viewing angles, the 2mm bi-color LED delivers excellent adaptability for countless lighting scenarios.

Manufactured with environmentally friendly materials and RoHS compliance, these LEDs ensure performance, safety, and long-term reliability.

⭐ Key Features of the 2mm Round Type Bi-Color LED (3 Leads)

1. Dual-Color Output in a Compact 2mm Package

The LED integrates two chips into a single miniature round lens, enabling:

• Two independent colors

• Mixed or symbolic signals (Red/Green, Red/Yellow, etc.)

• Multi-status indication without adding more LEDs

This greatly reduces PCB footprint and simplifies mechanical design.

2. 3-Lead Structure: Easy Circuit Integration

The 3-pin configuration includes:

• Two leads dedicated to each color

• One common lead, either anode or cathode

This structure allows flexible wiring for engineers and supports a wide range of circuit designs.

3. Flexible Viewing Angle Options

Available viewing angles include:

• Narrow for concentrated, laser-like brightness

• Medium for indicator panels

• Wide for general illumination

This allows product designers to match the LED’s light dispersion to the application.

4. Multiple Lens Types

You may choose from:

• Diffused lens – Soft, uniform color output

• Transparent lens – Bright, crisp illumination

• Water-clear lens – Maximum brightness and sharp clarity

Engineers can optimize light behavior for transparency, diffusion, or maximum focus.

5. IC Compatible / Low-Current Operation

The LED is optimized for electronics requiring:

• Low current drive

• Direct compatibility with most IC outputs

• Energy-efficient signaling

This reduces power consumption and heat generation, increasing system reliability.

6. Common Anode or Common Cathode Design

Available configurations:

• Common Anode (CA) – Popular for microcontroller applications

• Common Cathode (CC) – Standard for many analog circuits

Choosing the right option simplifies system wiring and improves performance.

7. Environmentally Friendly – RoHS Compliant

The LED is manufactured under strict environmental standards:

• Free of hazardous materials

• Safe for consumer and industrial use

• Compliant with global manufacturing regulations

⭐ Applications of 2mm Round Bi-Color 3-Lead LEDs

1. Indicator Lights

Perfect for:

• Power/status indicators

• Multi-mode signals

• Device notifications

Dual-color capability allows one LED to show “on/off,” “charging/full,” and other states.

2. Decorative & Ambient Lighting

Used in:

• Miniature light accents

• Art installations

• Stage decorations

• Interactive LED designs

Bi-color illumination adds aesthetic variety and dynamic effects.

3. Automotive Dashboard & Control Panels

Ideal for:

• Status indicators

• Instrument cluster signals

• Button backlighting

Different colors help drivers easily identify system conditions.

4. Consumer Electronics

Common in:

• Remote controls

• Portable devices

• Home appliances

• Battery indicators

One LED = multiple color signals → Compact & efficient designs.

5. Safety & Warning Systems

Used for:

• Emergency alarms

• Warning labels

• Caution indicators

Dual-color output improves visibility and communication.

6. Entertainment, Stage & Event Lighting

Used for:

• Light effects

• Mini-signal indicators in DMX systems

• Animation elements in LED art

The brightness and clarity make it a smart choice for visual displays.

7. Educational, DIY & Maker Projects

Perfect for:

• Arduino projects

• Prototyping

• Electronics learning kits

• Robotics

The two-color feature teaches LED polarity, multiplexing, and status-lighting concepts.

8. General Lighting Uses

In any environment requiring compact, dual-color indication or multi-mode status lighting.

⭐ Benefits of Using 2mm Round Bi-Color LEDs

• Space-saving dual-color function

• Low power consumption

• High visibility and clarity

• Easy to integrate with IC logic

• Long lifespan and durability

• Flexible optical and electrical options

• Excellent for high-density PCBs

Engineers benefit from reduced cost, simplified PCB layouts, and enhanced visual feedback capabilities.

⭐ Case Study

A company manufacturing compact handheld medical analyzers needed:

• A dual-color indicator for test status

• Ultra-small size due to enclosure constraints

• Low current consumption

• High reliability for 24/7 operation

By integrating a 2mm bi-color LED (3-pin) in water-clear lens, they achieved:

• 40% reduction in indicator space

• Clear switching between „Processing“ (yellow) and „Complete“ (green)

• 20% lower power draw

• Zero failures in long-term stability tests

The LED improved usability, reduced PCB complexity, and increased product reliability.

⭐ User Testimonials

Electronics Engineer – USA

„Compact, bright, and easy to integrate. Bi-color functionality helps reduce component count significantly.“

Automotive Design Specialist – UK

„Perfect for dashboard indicators. The viewing angle options help us fine-tune the light direction.“

DIY Maker – Australia

„The 3-pin setup is great for Arduino projects. Simple wiring and excellent brightness.“

⭐ Conclusion

The 2mm round type bi-color LED lamp with 3 leads delivers exceptional performance in a compact footprint. Its dual-color capability, flexible lens and viewing angle options, IC compatibility, and environmental safety make it an ideal solution for modern, space-conscious electronics.

From industrial panels and consumer devices to automotive dashboards and creative lighting installations, this LED offers reliability, efficiency, and flexibility for countless applications.

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