3mm Bi-Level LED CBI (11×4×10mm) — High-Contrast Dual-Position Circuit Board Indicator

The 3mm Bi-Level LED CBI is engineered for applications that demand dual-position visual indication in compact spaces, making it ideal for modern control panels, instrumentation, communication devices, and consumer electronics. Featuring a bi-level configuration, this CBI provides two vertically stacked indicator positions, enabling clear multi-status signaling without increasing PCB footprint.

Designed with a 3mm LED package, this indicator is available in a wide range of color options including single-color, bi-color, and multi-color combinations to meet diverse application requirements. Its durable structure, consistent luminous performance, and high-contrast housing make it a superior choice for OEMs and engineering teams looking for reliability and clarity in panel indication.

Key Features

✔ Bi-Level CBI (Two-Level) Design

The standout feature of this product is its two-position stacked indicator structure, enabling efficient multi-status signaling. Each level functions independently, making it suitable for ON/OFF, multi-step, or dual-state system feedback.

✔ Compact 3mm LED Package

With an overall dimension of 11 × 4 × 10mm, this CBI fits seamlessly into dense PCB layouts without compromising visibility or durability.

✔ Pre-Formed Leads for Precise PCB Alignment

Engineered for manufacturing efficiency, the pre-formed leads offer:

• Fast and accurate PCB placement

• Strong mechanical stability

• Repeatable performance in automated production

✔ High-Contrast Black Housing

The black UL-rated housing enhances optical clarity by improving contrast between illuminated and non-illuminated states, ensuring at-a-glance visibility even in bright environments.

✔ Long-Life LED Chip

Made with high-reliability LED chips, the CBI delivers:

• Stable and uniform luminous output

• Long operational lifespan

• Excellent color consistency

✔ Safe and Compliant Materials

• UL 94V-0 rated PA66 housing

• Halogen-free construction

• RoHS compliant
  These ensure safety, environmental responsibility, and global regulatory compatibility.

✔ Multiple Color Combinations Available

Including:

• Red

• Green

• Yellow

• Blue

• Bi-Color options

• Multi-color custom configurations

Product Selection Guide

Electrical-optical characteristics: (Ta=25°C) (Test Condition: IF=20mA)

Applications

The 3mm Bi-Level LED CBI (11×4×10mm) is designed for environments requiring compact, high-visibility indication, making it an excellent solution for:

✔ Control & Instrumentation Panels

Displays multi-state indicators in industrial and scientific equipment.

✔ Communication & Test Equipment

Ideal for stacked signal displays where vertical grouping improves clarity.

✔ Vertical Indicator Modules

Perfect for compact illumination towers or layered signal interfaces.

✔ Switch & Keypad Backlighting

Provides localized, dual-level lighting for enhanced UX in human-machine interfaces.

✔ Consumer & Industrial Devices

Used for status, warning, and function display across various electronics.

Benefits for Engineers and OEMs

High-Density Efficiency

Two indicators in one footprint reduce PCB size and simplify layout design.

Reliable and Repeatable Performance

Pre-formed leads and high-quality LEDs ensure strong process compatibility.

Excellent Visual Communication

The bi-level design makes it effortless to communicate multiple machine states.

Adaptable to Various Industries

Its compact design, multiple color options, and high durability make it suitable for electronics, automation, instrumentation, and IoT devices.

Environmentally Friendly

RoHS and halogen-free compliance support sustainability and global market distribution.

Case Study: Dual-Level Status Indicators in Diagnostic Equipment

A medical diagnostic equipment manufacturer needed a space-saving indicator that could communicate two operational states on a crowded front panel—”Test in Progress” and “Test Complete.”
By integrating the 3mm Bi-Level LED CBI, they were able to:

• Reduce panel space by 40%

• Improve visibility and contrast

• Enhance user interaction through clear stacked indicators

• Maintain long-term stability in continuous-operation environments

The result was a more efficient, intuitive, and visually clear device interface.

User Testimonials

✔ Electronics Engineer, Automation Company
“The bi-level CBI saved significant board space while maintaining great brightness. Perfect for tight control panel layouts.”

✔ Product Designer, Consumer Electronics
“The multiple color combinations allowed us to match our interface design perfectly. Very reliable and easy to integrate.”

✔ Test Equipment Manufacturer
“The contrast is excellent, especially with the black housing. Our operators immediately noticed the clarity improvement.”

Conclusion

The 3mm Bi-Level LED CBI (11×4×10mm) is a compact, durable, and versatile solution for applications requiring dual-level indication with high reliability. Its superior optical performance, long-life LED chips, and regulatory compliance make it an optimal choice for modern electronics designs that demand efficiency, clarity, and long-term stability.

Enhance your next electronic device with a high-performance bi-level indicator engineered for precision and reliability.