1209 bi-color SMD LED, inner lens

Series No:




3 x 2.5 x 1.5


SMD 1209 chipLED





In the realm of electronic components, the 1209 bi-color SMD LED with an inner lens represents a notable advancement in LED technology. This detailed article explores the unique features, extensive applications, and numerous benefits of this versatile LED solution, along with compelling case studies and user testimonials from professionals in the electronics industry. Designed for electronics manufacturers, engineers, and purchasers, this guide provides insightful information on how the 1209 bi-color SMD LED can revolutionize product designs and applications.

Innovative Features of the 1209 Bi-Color SMD LED, Inner Lens

The 1209 bi-color SMD LED stands out for its compact design and enhanced optical performance, thanks to its integrated inner lens. Key features include:

  • Bi-Color Functionality: Combines two different LED colors in one package, allowing for more creative and flexible lighting solutions.
  • Enhanced Brightness: The inner lens focuses and intensifies the light output, improving visibility and color mixing.
  • Small Footprint: Its compact size makes it ideal for high-density mounting, crucial in miniaturized electronic devices.

Applications of the 1209 Bi-Color SMD LED

The versatility of the 1209 bi-color SMD LED makes it suitable for a wide range of applications:

  • Consumer Electronics: Utilized in status indicators, backlighting for displays, and user interface enhancements in smartphones and other portable devices.
  • Automotive Lighting: Applied in dashboard backlighting, ambient lighting, and signal lighting, offering drivers and passengers enhanced visual experiences.
  • Healthcare Devices: Used in medical equipment for indicators and illuminative diagnostics, where reliable, clear signaling is crucial.

Benefits of Using 1209 Bi-Color SMD LEDs

Integrating 1209 bi-color SMD LEDs into electronic designs offers several significant advantages:

  1. Dual-Color Output: Enables the display of multiple colors without additional space or power consumption, enhancing the aesthetic and functional versatility of devices.
  2. Increased Efficiency: The inner lens optimizes light output, reducing energy consumption while providing brighter illumination.
  3. Design Flexibility: Small size and bi-color capabilities allow designers to explore innovative applications that were previously not possible due to space constraints.

Case Studies: Real-World Impact of 1209 Bi-Color SMD LEDs

  • Smartphone Interface Enhancement: A leading smartphone manufacturer implemented the 1209 bi-color LEDs in their latest model, significantly enhancing the user interface with dynamic color notifications.
  • Advanced Automotive Applications: An automotive company integrated these LEDs into their new luxury vehicle series, significantly improving the aesthetic and functionality of the interior lighting system.

User Testimonials

  • Elena Petrova, Product Developer at ElecTech Innovations: “The 1209 bi-color SMD LEDs have transformed our product design capabilities, allowing us to incorporate vibrant, multi-functional lighting into our compact electronic devices.”
  • John Kramer, Procurement Manager at AutoLux Ltd.: “Adopting the 1209 bi-color LEDs has not only enhanced the visual appeal of our products but also reduced our energy costs due to their efficiency.”

Conclusion: Why Choose 1209 Bi-Color SMD LED with Inner Lens?

The 1209 bi-color SMD LED with an inner lens is a cutting-edge solution that offers both functional and aesthetic benefits to a wide array of electronic applications. Its ability to deliver dual-color illumination in a compact package makes it an invaluable component for enhancing the design and functionality of modern electronic devices.

Call to Action: Enhance your electronic projects with the innovative 1209 bi-color SMD LED. Contact our sales team today to find out how this advanced LED technology can elevate your product offerings!

1209 bi-color SMD LED, inner lens
1209 bi-color SMD LED, inner lens

Features: 1209 Bi-Color SMD LED, Inner Lens

  • Compact size: 3.0mm x 2.5mm SMD
  • Bi-color type
  • Compatible with automatic placement equipment
  • Wide viewing angle
  • Ideal for backlighting and indicator applications
  • Package: 3,000 pieces per reel
  • RoHS compliance


  • Backlighting for electronic devices
  • Indicator lights in various equipment
  • Color-coded displays
  • Status indicators in consumer electronics
  • Decorative lighting in signage
  • Compact and space-sensitive lighting designs

RoHs Compliance, Pb-free              Anti-Static Attention

Electrical-optical characteristics:
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More information, Contact us at sales@betlux.com
Package configuration & Internal circuit diagram
1209 bi-color SMD LED, inner lens

All dimensions are in millimeters(inches)
Tolerance is +-0.25(0.01″) unless otherwise note
Specifications are subject to change without notice.

Partno description:

LEDs, Light Emitting diodes, which include various small kinds, such as 3mm, 5mm, 8mm, 10mm; round type, rectangular type square type, tower type, Oval led, elliptical, flat top; SMDs, high power led, piranha LEDs

Part No of  LED diode

More Information

Lens Color:

Meaningcolor DiffusedColor TintedWater ClearWater DiffusedOrange diffused 

Absolute maximum ratings (Ta=25°C)

Forward Current I F252525303030303030303030mA
Power Dissipation P d606060656575110110120120120120mW
Reverse Voltage V R555555555555V
Peak Forward Current I PF (Duty 1/10 @1KHZ)150150150150150150150100100100100100mA
Operation Temperature T OPR-40 to +80°C
Storage Temperature T STG-40 to +85°C
Lead Soldering Temperature T SOL  Max.260+-5°C for 3 sec Max. (1.6mm from the base of the epoxy bulb)°C
Related Information

Applied for:
auto lampcameradome lightrgb screentraffic light


The LEDs described here are intended to be used for ordinary electronic equipment (such as office equipment, 

communication equipment and household applications). Consult Betlux’s Sales in advance for information on 

applications in which exceptional reliability is required, particularly when the failure or malfunction of the LEDs

 may directly jeopardize life or health (such as in aviation, transportation, traffic control equipment, medical 

and life support systems and safety devices).

CAUTIONS for Through-Hole LED Lamps

1. Application
The LEDs described here are intended to be used for ordinary electronic equipment (such as office equipment, communication equipment and household applications). Consult Betlux’s Sales in advance for information on applications in which exceptional reliability is required, particularly when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in aviation, transportation, traffic control equipment, medical and life support systems and safety devices).

2. Storage
The storage ambient for the LEDs should not exceed 30℃ temperature or 70% relative humidity. It is
recommended that LEDs out of their original packaging are used within three months
For extended storage out of their original packaging, it is recommended that the LEDs be stored in a sealed
container with appropriate desiccant or in a desiccator with nitrogen ambient.

3. Cleaning
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary

4. Lead Forming & Assembly
During lead forming, the leads should be bent at a point at least 3mm from the base of LED lens. Do not use
the base of the leadframe as a fulcrum during forming.
Lead forming must be done before soldering, at normal temperature.
During assembly on PCB, use minimum clinch force possible to avoid excessive mechanical stress.

led diode formingassembly notice of led diode


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


antistatic notice-smd led

Drive Method

An LED is a current-operated device. In order to ensure intensity uniformity on multiple LEDs connected in 

parallel in an application, it is recommended that a current limiting resistor be incorporated in the drive circuit,

 in series with each LED as shown in Circuit A below.

drive notice - led diode

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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