3mm Bi-color LED diode, 3 pin, 53mm long pin length

3mm Bi-color LED diode, 3 pin, 53mm long pin length

Through hole LED

Series No:

BL-L315L53

Weight:(g/pcs)

0.17

Dimension:(mm)

3 x 3.9 x 5.3

Package:

Specification:

downloadDatasheet

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Description:

3mm Bi-Color LED Diode with 3 Pins and 53mm Long Leads – Extended Reach, Dual-Color Versatility

The 3mm bi-color LED diode with 3 pins and an extra-long 53mm pin length is a specialized through-hole indicator engineered for applications requiring long lead reach, flexible mounting depth, and multi-color signaling in compact panel designs. This LED combines the familiar T-1 (3mm) size with a dual-color chip configuration, offering two distinct illumination modes using a 3-pin common lead setup.

With its 53mm extended leads, the LED is ideal for deep mechanical housings, elevated prototypes, breadboards, panel indicators, and designs where standard 20–25mm leads simply cannot reach. Whether used in control systems, instrumentation, DIY electronics, or commercial devices, this LED delivers reliability, strong visibility, and practical assembly benefits.

⭐ Key Features

1. Dual-Color Output (Bi-Color LED)

This LED integrates two LED chips in a single package, providing:

  • Two independent colors (e.g., red/green, red/yellow)

  • Easy color switching based on polarity

  • Clear status indication for systems requiring multi-state visual feedback

This makes it perfect for error/status/warning/light-on indicators.

2. 3-Pin Configuration

The widely-used 3-pin structure offers:

  • One common cathode or anode

  • Two independent anodes or cathodes

  • Easy polarity control

  • Simplified circuit integration

Designers can switch between colors with minimal circuitry.

3. Extra-Long 53mm Lead Length

The standout feature of this LED is its 53mm long pins, providing:

  • Deep reach through thick front panels

  • Easy prototyping and jumper-style wiring

  • More flexible mounting positions

  • Better accessibility for testing and clipping probes

  • Reduced need for additional wiring extensions

Especially useful for industrial hardware and custom enclosures.

4. Compact 3mm Cylindrical Lens

The small lens size ensures:

  • Tight spacing in high-density boards

  • Clean, minimalistic indicator appearance

  • Strong forward illumination with excellent visibility

Available in clear, diffused, water-clear, or tinted lens options.

5. High-Brightness Light Output

The LED offers:

  • Strong luminous efficiency

  • Low power consumption

  • Reliable long-term stability

  • Bright, clear optical color transitions

Great for low-current or battery-powered systems.

6. Through-Hole Durability

This LED is built for robust environments:

  • Vibration-resistant through-hole construction

  • Strong epoxy lens

  • Heat-resistant metal leads

  • Excellent operational life

7. RoHS Compliant

Manufactured with environmentally safe, lead-free materials.

⭐ Applications

The 3mm bi-color LED with 53mm long pins is ideal for situations where both extended lead length and dual-color functionality are essential.

✔ Industrial Control Panels

Long leads allow placement through thick metallic or composite panels.

✔ Status & Indicator Lights

Perfect for multi-state light indicators:

  • ON/OFF

  • Standby/Active

  • Error/OK

  • Charging/Charged

✔ Instrumentation & Test Equipment

Engineers appreciate the reach for:

  • Deep housings

  • Recessed bezels

  • Multi-layer enclosure fronts

✔ Prototyping & DIY Electronics

The long leads make it easy to:

  • Bend, shape, or reposition LEDs

  • Test circuits on breadboards

  • Clip oscilloscope or multimeter probes directly

✔ Telecom & Networking Equipment

Dual-color output helps identify system states at a glance.

✔ Automotive & Hobby Projects

Ideal for dashboards, warning indicators, and custom signal modules.

⭐ Benefits & Advantages

✔ Multi-Color Signaling in One Component

Reduces component count and simplifies PCB layout.

✔ Extended Lead Length Enhances Mechanical Flexibility

53mm pins eliminate the need for:

  • Lead extension wires

  • Connectors

  • Light guides

  • LED standoffs

✔ Highly Visible Illumination

Even from a distance or behind tinted panels.

✔ Great for Deep Enclosure Designs

Allows assembly through:

  • Thick plastic

  • Wood

  • Metal

  • Multi-layer enclosures

✔ Excellent for Prototyping and R&D

The longer pins provide room for repeated bending or testing.

✔ Reliable, Long-Life Indicator

Engineered for years of continuous operation.

dual-color notification (power and status)
dual-color notification (power and status)

⭐ Case Study: Appliance Manufacturer Upgrade

A UK appliance manufacturer needed an LED to protrude through a 15mm-thick molded ABS panel while providing dual-color notification (power and status). Standard 25mm LEDs required hand-soldered wire extensions, slowing production.

Switching to the 3mm bi-color LED with 53mm long leads resulted in:

  • 30% faster assembly time

  • Elimination of manual lead extensions

  • Cleaner front-panel alignment

  • Improved brightness and visibility

This LED became their standard for all future models.

⭐ User Testimonials

Manufacturing Engineer – USA
“The 53mm long pins saved us hours of wiring during assembly. Perfect for deep mounting.”

Electronics Hobbyist – Canada
“Great LED for breadboards—long leads make experimenting super easy.”

Product Designer – Germany
“Dual color plus long leads is a rare combination. Exactly what we needed for accessible status indicators.”

⭐ Conclusion

The 3mm bi-color LED diode with 3 pins and 53mm long lead length is a versatile, professional-grade indicator designed for deep-panel installations, multi-state signaling, and flexible engineering applications. With its bright dual colors, extended reach, and durable construction, this LED is an ideal choice for industrial systems, instrumentation, consumer devices, and R&D environments.

If your design requires a compact LED that offers both color versatility and long mechanical reach, this model delivers outstanding performance and value.

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

Obtain 3D specification files


downloadInitial Graphics Exchange Specification (.IGS)
downloadStandard for the Exchange of Product Model Data (.STEP)

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 Bi-color LED diode, 3 pin, 53mm long pin length


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:

CodeDTCWE 
Meaningcolor DiffusedColor TintedWater ClearWater DiffusedOrange diffused 

Absolute maximum ratings (Ta=25°C)

ParameterSRLRURUEUYUGPGBGBUBUVWUnit
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

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

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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