Obtain 3D specification files
To examine all 3D specifications, save the files to your local drive and open them with your 3D application.
Lens colors in 3D files are solely for visual representation; consult the Datasheet for accurate lens type and color information.
In the event of a mismatch, the dimensions in the datasheet take precedence over the 3D specifications.
3mm CBI LED – Single-Level Circuit Board Indicator
High-Contrast, Long-Life 3mm LED Solution for Precision Panel Display
The 3mm CBI LED, also known as a circuit board indicator 3mm LED, is a compact and reliable light-emitting solution designed for precision panel indication, status display, and multi-equipment interface signaling. With its single-level configuration, this LED offers a clean, focused output suitable for a wide range of applications from commercial instrumentation to consumer electronics.
Engineers and purchasers rely on 3mm CBI LEDs for their stable optical output, easy PCB mounting, and high-visibility performance created by the black rectangular housing that enhances contrast on control panels.
Product Features
Compact 3mm LED Package
The small form factor of the 3mm LED makes it ideal for dense board assemblies and compact interface designs. Its single-level architecture provides straightforward indication without stacking complexity.
Precise PCB Alignment
Pre-formed leads ensure perfect seating on the PCB surface, guaranteeing accurate alignment and consistent optical pointing.
High-Contrast Black Housing
The black housing significantly enhances visibility by minimizing background reflections, resulting in crisp ON/OFF contrast suitable for bright environments.
Durable & Long-Life LED Chip
Built with high-quality semiconductor materials, the LED provides stable, uniform luminous output over a long operating life.
Safety & Compliance
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UL 94V-0 PA66 housing
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Halogen-free
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Fully RoHS compliant
These certifications ensure safe operation and global market acceptance.
Applications
The 3mm CBI LED (circuit board indicator 3mm LED) delivers excellent performance in the following applications:
Control & Instrumentation Panels
Used for indicating power, faults, mode selections, and operational states.
Communication & Networking Equipment
Offers reliable status indication for switches, modems, routers, and transceivers.
User Interface Backlighting
Suitable for keypads, buttons, and compact display modules.
Industrial Equipment Indicators
Ideal for PLCs, automation panels, test instruments, and factory interface consoles.
Consumer Electronics
Perfect for battery indicators, chargers, and home appliance dashboards.
Benefits
1. Enhanced Status Visibility
Black housing + bright LED chip ensures top-tier clarity.
2. Easy Integration
Pre-formed leads make PCB assembly fast and error-free.
3. Long-Term Reliability
LED chip technology ensures stable brightness with minimal degradation.
4. Flexible Color Options
Available in single color, bi-color, and multi-color combinations, supporting varied equipment-status requirements.
5. Space-Efficient Design
Compact 3mm footprint fits into tight layouts where standard indicators cannot.
Color Combination Summary
The 3mm LED CBI single-level can be customized with various color options such as:
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Red / Green
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Red / Yellow
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Blue / Green
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Blue / Yellow
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Amber / Red
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Tri-color and multi-color configurations also available (RGB, RG, YG, etc.)
These combinations support multi-status signaling in compact panel designs.
Case Study: Industrial Control Panel Manufacturer
A U.S.-based automation OEM integrated the 3mm CBI LED into a new compact controller series. With limited front-panel space, the single-level CBI LED allowed them to maintain clear visual signaling without increasing enclosure size. Engineers reported:
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27% improvement in user visibility
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Faster PCB assembly time due to pre-formed leads
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Zero field failures over a 14-month test cycle
User Testimonial
“We switched to the 3mm CBI LED for our updated measuring instruments. The contrast is excellent, the color uniformity is consistent across batches, and we appreciate the plug-and-play PCB integration.”
— Senior Hardware Engineer, UK Electronics Firm
Conclusion
The 3mm CBI LED (circuit board indicator 3mm LED) is a compact, durable, and high-visibility solution for modern control interfaces, instrumentation, and compact product designs. Its precise alignment, long lifetime, and availability in multiple colors make it a trusted choice for engineers and OEMs worldwide.
Upgrade your next project with reliable visual indication—choose the 3mm CBI LED for performance you can count on.




