Infrared Led 5mm - 940nm (100mW)

Infrared Led 5mm - 940nm (100mW)

LED
INR210
Part.No: 9349
€0.75
In Stock
Immediate Dispatch
Infrared LED 5mm 950nm (MPN: 9349) — through-hole IR LED with 1.5V forward voltage, 50mA max current and 5000mcd brightness. Ideal for remote control, proximity sensing and IR communication projects with Arduino and Raspberry Pi.

 

The Infrared LED 5mm 950nm (MPN: 9349) is a standard through-hole 5mm IR LED operating at a 950nm wavelength, designed for wireless infrared communication, remote control emulation, proximity detection and object sensing applications. With a 1.5V forward voltage and up to 50mA max forward current, it is a cost-effective, plug-and-play discrete component that integrates directly into any microcontroller project via a current-limiting resistor.

Κύρια Χαρακτηριστικά / Key Features

  • 950nm Wavelength: Invisible to the human eye → perfect for covert IR transmission and sensor triggering
  • 5mm Through-Hole Package: Standard THT form factor → easy breadboard and PCB prototyping
  • 1.5V Forward Voltage: Low drive voltage → compatible with 3.3V and 5V microcontroller GPIO pins via resistor
  • 50mA Max Forward Current: Higher current = greater transmission range → pair with a transistor for full-power operation
  • 5000mcd Brightness: High radiant intensity → longer effective IR range
  • No digital interface required: Simple passive component → driven directly by any GPIO digital output

Pinout & Wiring

PINSymbolDescription
Long legAnode (+)Connect to positive supply / GPIO through current-limiting resistor
Short legCathode (−)Connect to GND

Wiring note: Always use a current-limiting resistor in series with the anode. For a 5V supply: R = (5V − 1.5V) / 0.02A = ~175Ω (use 180Ω or 220Ω). For 38kHz modulated IR remote control signals, use the IRremote library by Ken Shirriff.

Compatibility

  • Arduino UNO / Nano (5V): Fully compatible — use a 180Ω–220Ω series resistor. Note: Arduino GPIO pins source max ~30mA, so the LED cannot reach full 50mA power; use a transistor (e.g. 2N2222) to unlock full range.
  • ESP32 / ESP8266 / Raspberry Pi (3.3V): Compatible — use a 68Ω–100Ω series resistor for ~20mA drive current.

Typical Applications

  • IR Remote Control Emulation: Replicate TV/AC remote signals modulated at 38kHz using Arduino + IRremote library
  • Proximity & Object Detection: Pair with an IR receiver or photodiode for short-range obstacle detection
  • Line Following Robots: Used as the emitter in IR reflectance sensor pairs
  • Wireless Data Transmission: Low-speed optical communication between microcontroller boards
  • Security & Alarm Triggering: Infrared beam-break detection for motion or intrusion sensing

Technical Specifications

ParameterValue
InterfacePassive discrete — no digital interface
Operating Voltage3V (typical)
Forward Voltage (V_F)1.5V DC (typical)
Max Forward Current (I_F)50mA
Wavelength950nm (Infrared)
Brightness / Intensity5000mcd
Package5mm Through-Hole LED
MPN9349

Frequently Asked Questions

Q: Can I drive this LED directly from an Arduino GPIO pin?
A: Yes, but Arduino GPIO pins source a maximum of ~30mA, which is below the 50mA rated maximum. This limits transmission distance. For maximum range, drive the LED through a small NPN transistor such as the 2N2222.

Q: Do I need a special library to use this LED for remote control?
A: The LED itself requires no library — it is a passive component. However, for encoding/decoding IR remote control protocols (NEC, Sony, RC5 etc.), the IRremote library by Ken Shirriff is the standard solution for Arduino.

📦 Package: 1 × Infrared LED 5mm 950nm (through-hole, bulk)

⚠ Warning: Always use a current-limiting resistor in series. Connecting this LED directly to a voltage source without a resistor will exceed the maximum forward current and permanently damage the component.
Operating voltage (V)
3v
Brightness
5000mcd
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