dual level 3mm CBI,circuit board indicator 3mm LED

Article No:

bl-la2d3-e1004

Color: 

Weight:(g/pcs)

0.7

Dimension:(mm)

4.3 x 10.54 x 9.65

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Product Series
Series No:bl-la2d3-e1004
Specification Download:
Dimension
7.9 × 9.15 × 11 mm
Description:
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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

Instrumentation Panel Upgrade
Instrumentation Panel Upgrade

Product Selection Guide

Electrical-optical characteristics: (Ta=25°C) (Test Condition: IF=20mA)
Part Number Assembly LED Chip Lens Type Forward Voltage(VF) Unit:V Luminous Intensity (Iv) Unit:mcd Viewing Angle 2θ1/2 (deg)
Emitted Color Material lP (nm)
Typ Max Min. Typ.
BL-LA2D3-E1004BB LED1 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
LED2 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004BG LED1 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
LED2 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004BY LED1 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
LED2 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
BL-LA2D3-E1004GB LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004GG LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004GR LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
BL-LA2D3-E1004G-RG LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004GX LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 X Empty                
BL-LA2D3-E1004GY LED1 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
BL-LA2D3-E1004RB LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004RE LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 E amber AlGaAs 660 C. D. 1.85 2.2 30 110 60
BL-LA2D3-E1004RG LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004RG-RG LED1 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004RG-Y LED1 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 G Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
BL-LA2D3-E1004RG-YG LED1 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 YG Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004RR LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
BL-LA2D3-E1004RX LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 X Empty                
BL-LA2D3-E1004RY LED1 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
BL-LA2D3-E1004WW LED1 W White InGaN - C. D. 3.1 4.2 300 700 60
LED2 W White InGaN - C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004XB LED1 X Blue InGaN 465 C. D. 3.1 4.2 300 700 60
LED2 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004XG LED1 X Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004XR LED1 X Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
BL-LA2D3-E1004X-RG LED1 X Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
LED2 RG Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004XY LED1 X Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
LED2 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
BL-LA2D3-E1004YG LED1 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
LED2 G Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004YG-B LED1 YG Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 B Blue InGaN 465 C. D. 3.1 4.2 300 700 60
BL-LA2D3-E1004YG-R LED1 YG Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
BL-LA2D3-E1004YG-YG LED1 YG Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
LED2 YG Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
Green GaP/GaP 570 C. D. 2.2 2.5 1.5 20 60
BL-LA2D3-E1004YR LED1 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
LED2 R Red GaAsP/GaP 635 C. D. 2.1 2.5 10 70 60
BL-LA2D3-E1004YX LED1 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
LED2 X Empty                
BL-LA2D3-E1004YY LED1 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60
LED2 Y Yellow GaAsP/GaP 585 C. D. 2.1 2.5 1.5 20 60

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.

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Related Information

Soldering

When soldering, leave a minimum of 2mm clearance from the base of the base of the lens to the soldering point. Dipping the lens into the solder must be avoided.

Do not apply any external stress to the lead frame during soldering while the LED is at high temperature.

Recommended soldering conditions:

 

IR Reflow Soldering (for SMD display)Wave SolderingSoldering Iron
Pre-Heat150-180°CPre-Heat100°C Max.Temperature300°C Max.
Pre-Heat Time120sec Max.Pre-Heat Time60sec Max.
Peak Temperature260°C Max.SolderWave260°C Max.Soldering Time3sec Max.(one time only)
Soldering Time10 sec Max.Soldering Time5sec Max.

Note: Excessive soldering temperature and/or time might result in deformation of the LED lens or failure of the LED

ESD(Electrostatic Discharge)

Static Electricity or power surge will damage the LED.

Suggestions to prevent ESD (Electrostatic Discharge):

n Use a conductive wrist band or anti-electrostatic glove when handling these LEDs

n All devices, equipment, and machinery must be properly grounded

n Work tables, storage racks, etc. should be properly grounded

n Use ion blower to neutralize the static charge which might have built up on surface of the LED’s

 plastic lens as a result of friction between LEDs during storage and handling

ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, 

low forward voltage, or “no light on” at low currents. To verify for ESD damage, check for “light on” 

and Vf of the suspect LEDs at low currents.

The Vf of “good” LEDs should be>2.0V@0.1mA for InGaN product and >1.4V@0.1mA for AlInGaP

 product.

antistatic notice-smd led

When selecting power for LED systems, it’s essential to understand several key parameters to ensure safe operation, longevity, and optimal performance. Here are some steps and considerations for LED power selection:

  • Determine the Forward Voltage (Vf) of the LED(s):

Each LED has a forward voltage, which is the voltage at which the LED operates when the current is flowing through it. This value can typically be found in the LED’s datasheet.

  • Determine the Forward Current (If) of the LED(s):

The forward current is the current at which the LED is designed to operate. Running an LED at higher than its rated current can reduce its lifespan and increase the heat it produces.

  • Decide on the Configuration:

Series Configuration: When LEDs are connected in series, the forward voltages add up, but the current remains the same.

Parallel Configuration: When LEDs are connected in parallel, the forward voltage remains the same, but the currents add up. This configuration can be risky because if one LED fails or has a slightly lower forward voltage, it can cause the other LEDs to draw more current.

Calculate Total Power Requirements:

Power (W) = Total Forward Voltage (V) x Total Forward Current (A)

For example, if you have three LEDs connected in series, each with a forward voltage of 3V and a forward current of 20mA, the total power requirement would be:

Power = (3V + 3V + 3V) x 20mA = 9V x 0.02A = 0.18W

  • Select an Appropriate Power Supply:
  • Voltage Rating: The power supply voltage should match or slightly exceed the total forward voltage of your LED configuration.
  • Current Rating: The power supply’s current rating should meet or exceed the total forward current of your LED configuration.
  • Safety Margin: It’s a good practice to select a power supply that can provide at least 20% more power than your calculated requirement. This ensures the power supply isn’t operating at its maximum capacity, which can extend its life and ensure safer operation.
  • Consider Additional Features:
  • Dimming Capability: If you want to control the brightness of your LEDs, choose a power supply with dimming capabilities.
  • Overcurrent and Overvoltage Protection: To protect your LEDs, select a power supply with built-in protection mechanisms.
  • Thermal Management: Ensure that the power supply has adequate cooling, especially if it will be enclosed or in a location with limited airflow.
  • Regulation and Efficiency:A power supply with good regulation will maintain a consistent voltage output despite variations in the load. High efficiency ensures minimal power is wasted as heat.
  • Physical Size and Form Factor:Depending on where you plan to place the power supply, its size and shape may be critical factors.

In summary, when selecting power for LED systems, understanding your LED’s requirements and the configuration you plan to use is essential. Then, pick a power supply that meets those needs with some added safety margin, keeping in mind any additional features or constraints relevant to your project.

Here are some well-regarded brands in the industry:

  • Mean Well: One of the most recognized brands in the LED power supply industry, Mean Well offers a wide range of products suitable for both indoor and outdoor applications. Their units often come with features like overcurrent protection, dimming capabilities, and high efficiency.
  • Tridonic: A global leader in lighting technology, Tridonic offers LED drivers and power supplies that cater to various lighting solutions, from simple setups to advanced smart lighting systems.
  • Philips Advance Xitanium: Philips is a well-known brand in the lighting industry, and their Xitanium series of LED drivers are known for reliability and performance. They cater to both indoor and outdoor LED applications.
  • Osram: Another giant in the lighting industry, Osram offers a range of LED drivers and power supplies suitable for various applications, including architectural and street lighting.
  • LIFUD: Specializing in LED drivers, LIFUD is known for its high-quality products that cater to both commercial and residential LED lighting solutions.
  • MOSO: This brand offers a variety of LED drivers, especially for outdoor and industrial applications. Their products are known for durability and performance.
  • TDK-Lambda: With a history in power electronics, TDK-Lambda offers a range of power supplies and LED drivers suitable for various applications, emphasizing reliability and advanced features.
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