IR LED in

Smart IR Remote Control

Introduction to Infrared Emission

Market Share & Technical Classification

How IR LEDs Works in Smart Remote Controls

Choosing the Right IR LED

Infrared Emission

Introduction

Infrared Light-Emitting Diodes (IR LEDs) convert electrical energy directly into infrared light (invisible to humans) and emit it as radiation. They are widely used in optical control and remote control circuits. Structurally similar to standard LEDs but made of materials like gallium arsenide (GaAs) or gallium aluminum arsenide (GaAlAs), they come in transparent, light-blue, or black resin packaging. Common series include SIR, SIM, PLT, GL, HIR, and HG.

Market Share

Package type distribution in 2018

SMD Type: 47.62%、Emitter and Detector: 29.67%.

Application areas

Home appliance remote control, medical equipment, security monitoring, etc.

Infrared Wavelength

What does an IR LED do?

IR LED (Infrared Light-Emitting Diode) is the core signal emission component in remote controls. What does an IR LED do? Its primary function is to convert the control commands from the remote into infrared light signals, which are then transmitted to controlled home appliances (e.g., TVs, air conditioners).

Wavelength & Applications

Wavelength	Applications
940nm	Household Appliance Remotes
808nm	Medical Devices, Optical Communication, Laser Pumping
830nm	Highway Night Vision Systems
840nm	Color Zoom IR Waterproof Cameras
850nm	Surveillance Cameras, Intercoms, Security Alarms
870nm	Mall/Crossroad Cameras

How IR LEDs Works

in Smart Remote Controls

Electrical-to-Infrared Conversion

The remote’s chip encodes button commands (e.g., “power on”) into binary electrical signals. The IR LED converts them into infrared light (850–940nm) for emission.

Carrying Modulated Commands

Signals are modulated with a 38kHz carrier to resist interference. The IR LED blinks rapidly (on/off = 1/0) to transmit encoded commands, which are demodulated by the receiver.
Directional Emission & Coverage

With an emission angle of 30°–60° (30°–50° for standard round heads), IR LEDs focus signals on target devices. Line-of-sight transmission requires aiming the remote, as obstacles (e.g., walls) block signals.

Tips for Choosing Smart IR LEDs for Remote Control

Key Selection Criteria for IR LEDs

Energy Efficiency & Eco-Friendliness

Smart remotes use low-power IR LEDs to minimize energy consumption, aligning with eco-friendly goals.

Low Power Consumption & Long Lifespan

As semiconductors, IR LEDs offer low power usage, nanosecond response, and >100,000-hour lifespan, ideal for high-frequency remote applications.

Choosing Reputable Brands

HQG Brand

• HQG LED Founded in 2005 with 20 years in LED packaging; certified as a “National High-Tech Enterprise.”
• Holds 20+ invention patents and 150+ utility model patents.
• Compliant with IATF16949, ISO9001, and ISO14001 standards.
• Full-process automation (die bonding → spectral sorting) ensures cost efficiency.

LED Academy

You May Sourcing

FAQ

Could you please send me the free sample, so that I could see and check its quality?

A: Yes. We can send you free samples first, if the value is low. But our clients should pay for the shipping freight themselves. Samples fee needs to be charged if the value is high.
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A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also can be an option.

View Products →

IR LED in

Smart IR Remote Control

Infrared Emission

Introduction

Market Share

Infrared Wavelength

What does an IR LED do?

Wavelength & Applications

How IR LEDs Works

Tips for Choosing Smart IR LEDs for Remote Control

Key Selection Criteria for IR LEDs

Choosing Reputable Brands

LED Academy

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3528-1.9T IR/PT LED | Specifications Size 3.5×2.8×1.9mm

020 LED | 020(3806)-1T Power & Spec Sheet High-Efficiency HQG LED

FAQ

Could you please send me the free sample, so that I could see and check its quality?

How do you ship the goods and how long does it take to arrive?

Download Latest E-Catalog

Precision-Built SMD LEDs , 150+ Engineering Patents.

IR Smart Interaction

Device Status indicators

Consumer Electronics Backlighting

Specialty Lighting solutions

IR LED in

Smart IR Remote Control

Infrared Emission

Introduction

Market Share

Infrared Wavelength

What does an IR LED do?

Wavelength & Applications

How IR LEDs Works

Tips for Choosing Smart IR LEDs for Remote Control

Key Selection Criteria for IR LEDs

Choosing Reputable Brands

LED Academy

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You May Sourcing

5mm Through-Hole Infrared Photosensitive

3mm Through-Hole Infrared Photosensitive

Through Hole LED | Buy Through Hole LEDs Bulk Pricing

3528-1.9T IR/PT LED | Specifications Size 3.5×2.8×1.9mm

020 LED | 020(3806)-1T Power & Spec Sheet High-Efficiency HQG LED

FAQ

Could you please send me the free sample, so that I could see and check its quality?

How do you ship the goods and how long does it take to arrive?

Download Latest E-Catalog

Precision-Built SMD LEDs , 150+ Engineering Patents.

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