3mm SMD CBI,circuit board indicator 3mm LED
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![]() Series No:bl-las1d3-b0704 Dimension 7.9 × 9.15 × 11 mm Description: ___________________________________________________________________________________________________________________________________________________ 3mm SMD CBI – Circuit Board Indicator 3mm LEDThe 3mm SMD CBI (Circuit Board Indicator) is a compact, board-mount LED solution designed for clear visual signaling in electronic systems. Engineered in a 3mm SMD package, this circuit board indicator LED provides reliable performance, easy assembly, and consistent illumination—making it ideal for high-density PCBs, front-panel displays, and compact electronic products. Built for OEMs and electronics manufacturers, the 3mm SMD CBI offers excellent optical efficiency, long-term reliability, and RoHS-compliant construction. Its precise mechanical alignment ensures accurate positioning through automated pick-and-place assembly, improving both production speed and quality consistency. Key Features✔ Compact 3mm SMD FootprintThe 3mm size allows efficient use of PCB space, supporting high-density board layouts without compromising brightness or visibility. ✔ High-Reliability Circuit Board IndicatorDesigned specifically as a circuit board indicator, it provides stable, long-lasting illumination for equipment status display and signal indication. ✔ Uniform, Consistent Light OutputAdvanced LED chip technology ensures stable brightness with minimal light decay over time. ✔ Multiple Lens Options
✔ SMD Design for Automated AssemblyFully compatible with SMT production lines, improving placement accuracy and simplifying mass production. ✔ Energy EfficientLow current requirements help maintain system power efficiency while providing bright visual output. ✔ RoHS CompliantManufactured using environmentally safe materials meeting global compliance standards. ![]() ApplicationsThe 3mm SMD CBI circuit board indicator LED is used across a wide range of industries: ● Consumer ElectronicsStatus indicators for smart devices, controllers, chargers, and handheld electronics. ● Industrial EquipmentPower indicators, warning lights, and control panel status displays in automation systems. ● TelecommunicationsSignal lights for modems, routers, network switches, and base station equipment. ● Medical DevicesFront-panel indicators and status notification lights for compact diagnostic instruments. ● Test & Measurement DevicesMeasurement readouts, signal indicators, and instrument panel illumination. ● Office & Computer PeripheralsKeyboard backlighting, printer indicators, and monitor status LEDs. ● Automotive ElectronicsDashboard modules, indicator units, and onboard electronics requiring stable visibility. BenefitsHigh Clarity & VisibilityDesigned to perform even under strong ambient lighting, ensuring critical signals remain easy to observe. Space-Saving & VersatileIts compact 3mm SMD format integrates easily into small devices and multi-indicator clusters. Long Operating LifeBuilt using high-quality LED chips with excellent thermal stability for extended performance. Cost-Effective for Volume ProductionIdeal for OEM manufacturing with automated assembly processes. Flexible Configuration OptionsAvailable in multiple brightness levels and colors such as:
Case Study – Industrial Control Panel ManufacturerA leading automation equipment company integrated the 3mm SMD CBI into its next-generation control panels. By switching from through-hole LEDs to SMD CBIs, they achieved:
This upgrade led to enhanced product performance and a measurable reduction in production cost. User Testimonials🔹 Electronics Design Engineer“The 3mm SMD CBI provides excellent brightness and fits perfectly into our compact PCB layouts. The automated SMT compatibility makes production smooth and consistent.” 🔹 OEM Purchasing Manager“Reliable supply, stable quality, and excellent illumination. Perfect for our multi-indicator systems.” 🔹 Product Developer“Great light output for its size. The circuit board indicator performance is stable, and long-term tests show very low failure rates.” ConclusionThe 3mm SMD CBI circuit board indicator LED is a professional-grade solution for manufacturers seeking a compact, highly reliable indicator light for modern electronic products. With its excellent brightness, SMT compatibility, and long lifetime, it is ideal for everything from consumer devices to industrial control systems. If you need dependable, space-efficient PCB indicator LEDs, this 3mm SMD CBI is a top-tier choice. ___________________________________________________________________________________________________________________________________________________ Dimension and Circuit Drawing: ![]() |
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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.
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