CBI 1.8mm, 1.8mm Quad-Level Circuit Board Indicator
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![]() Series No:bl-la4d2-b0607 Dimension 7.9 × 9.15 × 11 mm Description: ___________________________________________________________________________________________________________________________________________________ CBI 1.8mm Quad-Level Circuit Board Indicator – A Complete Technical OverviewThe CBI 1.8mm Quad-Level Circuit Board Indicator represents one of the most compact and efficient LED indication solutions for designers who require multi-status visual feedback within limited PCB real estate. As electronic devices continue to shrink in size while increasing in functionality, demand for high-density indication components such as 1.8mm CBI LEDs has grown significantly. This quad-level configuration offers four vertically aligned LED indicators in a single modular housing, enabling clearer and more organized signal presentation compared to individual LEDs. Built with a 1.8mm through-hole LED package and a precision-molded housing, the 1.8mm Quad-Level CBI ensures consistent alignment, improved visibility, and simplified assembly for a wide variety of control panels, testing equipment, and communication devices. With options for single-color, bi-color, tri-color, and even four-color configurations, engineers and product developers gain a versatile indicator solution that adapts to both consumer and industrial applications. Key Features of the 1.8mm Quad-Level CBIThe quad-stacked 1.8mm CBI is designed to deliver reliable, clear, and long-lasting performance in multi-status monitoring systems. Its most defining features include: 1. Quad-Level Indicator StructureThe four-level arrangement allows four independent indicators to be stacked vertically in one compact module. This is ideal for applications requiring progressive signaling, such as level displays, power sequencing, or status tracking across multiple system states. 2. Compact 1.8mm LED Package for High-Density ApplicationsThe slim, cylindrical 1.8mm LEDs mount closely together, making them suitable for hand-held instruments, portable electronics, densely packed control panels, and compact user-interface designs. 3. Precision Pre-Formed LeadsEach LED is preset with precisely formed through-hole leads that maintain consistent height and depth during PCB mounting. This eliminates manual lead bending, reduces manufacturing variation, and ensures perfect vertical alignment of all four layers. 4. High-Contrast Black HousingThe PA66 black housing absorbs ambient light and enhances LED visibility. This contrast improvement is especially important in brightly lit industrial environments, communication systems, and field equipment. 5. Multi-Color OptionsTo support dynamic indication needs, the 1.8mm Quad-Level CBI is available in:
Multi-color capability increases the unit’s flexibility for multi-state devices without increasing PCB footprint. 6. Robust, Long-Life LED ChipsThe LEDs provide stable luminous output and long operating life, reducing the need for maintenance or replacement in mission-critical applications. 7. Industrial-Grade Housing MaterialThe housing is molded from UL 94V-0 rated PA66, offering:
Its halogen-free and RoHS-compliant construction meets global safety and environmental standards. Applications of the 1.8mm Quad-Level Circuit Board IndicatorThanks to its compact size, robust construction, and multi-level functionality, the CBI 1.8mm Quad-Level indicator is widely used in: Instrumentation & Control Panel DisplaysThe four stacked indicators are ideal for showing:
This is common in machinery controls, scientific instruments, and monitoring systems. Communication, Testing & Diagnostic EquipmentEngineers rely on multi-level indicators during equipment diagnostics, bandwidth analysis, and signal testing. The quad structure helps visually separate hierarchical or sequential information. Consumer Electronics InterfacesSmall electronic devices such as adapters, handheld tools, chargers, and smart appliances benefit from space-saving multi-state indicators. Keypad & Switch BacklightingThe compact size allows the CBI to fit behind membrane switches or tactile buttons where vertically aligned illumination is required. Compact Multi-Point Display ModulesInstead of four individual LEDs, the quad-level pack simplifies wiring, assembly, and layout while maintaining uniform appearance. Industrial & Commercial Indicator PanelsControl cabinets and system monitoring panels take advantage of the clear visibility and robust housing. Benefits of Using the 1.8mm Quad-Level CBI1. Space EfficiencyFour indicators in one component dramatically reduce PCB footprint and routing complexity in compact products. 2. Faster Assembly & Improved Manufacturing AccuracyPre-formed leads and a rigid stacked housing ensure consistent LED alignment, eliminating manual adjustments and reducing production errors. 3. Enhanced ReadabilityThe black housing increases visual contrast, allowing operators to identify LED states at a glance even under bright ambient lighting. 4. Flexibility Through Multi-Color OptionsThe availability of single-color and multiple dual-color/tri-color combinations makes it suitable for applications requiring multiple status levels without increasing component count. 5. High ReliabilityLong-life LEDs, heat-resistant housing, and RoHS compliance contribute to durability and safety in demanding environments. Case Study: Quad-Level Indicator in Industrial Power ModulesA manufacturer of industrial motor drivers integrated the 1.8mm Quad-Level CBI into its power sequencing module. Each of the four LED levels represented:
By using a quad-level design:
This resulted in improved operational safety and simplified maintenance. User TestimonialsProduct Engineer – Automation Industry Purchasing Manager – Consumer Electronics R&D Director – Communication Equipment ConclusionThe CBI 1.8mm Quad-Level Circuit Board Indicator is a highly efficient solution for engineers designing compact, multi-status indication systems. Its stacked configuration, pre-formed leads, durable PA66 housing, and wide color availability make it an ideal choice for industrial, commercial, and consumer electronics applications. Whether used in control panels, communication systems, diagnostics equipment, or backlit interfaces, this quad-level indicator delivers performance, clarity, and long-term reliability. If you're seeking a high-density LED indicator solution with exceptional visibility and design flexibility, the 1.8mm Quad-Level CBI is a proven and dependable option. ___________________________________________________________________________________________________________________________________________________ Dimension and Circuit Drawing: ![]() |
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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 Soldering | Soldering Iron | |||
| Pre-Heat | 150-180°C | Pre-Heat | 100°C Max. | Temperature | 300°C Max. |
| Pre-Heat Time | 120sec Max. | Pre-Heat Time | 60sec Max. | ||
| Peak Temperature | 260°C Max. | SolderWave | 260°C Max. | Soldering Time | 3sec Max.(one time only) |
| Soldering Time | 10 sec Max. | Soldering Time | 5sec 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.

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.





