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3.30-3.44um MIR LED with Glass Cap
Idealphptonics is pleased to announce new light-emitting diodes with a special glass cap, which increases the LED output optical power (up to 3-5 times). This allows for higher precision in various gas, liquid, and solid sensing and analysis applications. Along with other advantages (compact size, low power consumption, high modulation range), our LEDs become an even more impressive component basis for sensors and analyzers.
Product features:Mid-infrared band; High optical efficiency; TO package; Fast response; Wide operating temperature
Part Number:MP-LED-3300-0.3-TO18
Application area:Moisture detection | Gas sensing | Medical diagnostics | Material analysis | Security monitoring
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Peak Emission Wavelength Operating Current
3.30-3.44um 200mA/1000mA

LED models with glass cap | ||||||||
Model | Peak Emission Wavelength [um] min-max | FWHM of Emission Band[nm] min-max | Average Optical Power in qCW Mode [uW] Min/Typ | Peak Optical Power in Pulse Mode2,3 [uW] Min/Typ | Voltage1 [V] (200 mA) min-max | Oparating Current in qCW Mode1[mA] | Operating Current in Pulse Mode2[mA] | Operating/Storage Temperature4[℃] |
MP-LED-2700-0.15-TO18 | 2.70-2.79 | 300-500 | 50/150 | 370/1000 | 0.2-1.0 | 200 | 1000 | 0..+50/0..+40 |
MP-LED-2830-0.3-TO18 | 2.83-2.90 | 300-500 | 100/300 | 700/2000 | 0.2-1.0 | 200 | 1000 | 0..+50/0..+40 |
MP-LED-3300-0.3-TO18 | 3.30-3.44 | 250-600 | 100/300 | 700/2000 | 0.2-1.3 | 200 | 1000 | 0..+50/0..+40 |
MP-LED-3700-0.18-TO18 | 3.70-3.94 | 400-700 | 80/180 | 500/1500 | 0.2-0.8 | 250 | 2000 | 0..+50/0..+40 |
MP-LED-4050-0.18-TO18 | 4.05-4.30 | 400-1200 | 80/180 | 500/1500 | 0.2-0.8 | 250 | 2000 | 0..+50/0..+40 |
¹ Repetition rate: 0.5 kHz, pulse duration: 1 ms, duty cycle: 50%
² Repetition rate: 0.5 kHz, pulse duration: 20 µs, duty cycle: 1%
³ Parameters tested on a representative sample; all other parameters tested for each device
⁴ Temperature range may vary depending on package type
Device Parameters
Device Parameter | Symbol | Value | Unit |
Operating/Storage Temperature | T_opr | 0...+50 | ℃ |
Solerding Temperature(time<3 sec, 3mm from housing) | T_sol | +180 | ℃ |
All parameters apply to LED operation at 25℃ unless otherwise stated.
LED Parameters
Parameter | Condition | Symbol | Value | Unit |
Peak Emission Wavelength1 | qCW mode3 I = 150 mA | λp | 3.30-3.44 | µm |
FWHM of Emission Band1 | qCW mode3 I = 150 mA | FWHM | 250-600 | nm |
Average Optical Power (Min/Typ)¹ | qCW mode3 I = 200 mA | Pqcw | min 100 / typ 300 | uW |
Peak Optical Power (Min/Typ)² | Pulse mode4 I = 1 A | Ppul | min700 / typ 2000 | uW |
Max Operating Current | qCW mode3 | I_max qcw | 200 | mA |
Pulse mode4 | I_max pulse | 1 | A | |
Forward Voltage¹ | qCW mode3 I = 200 mA | V | 0.2 - 1.3 | V |
Product Characteristics
Typical spectrum (qCW³) and typical optical power characteristics (qCW³)
Typical current-voltage characteristics (qCW³)
¹ Parameter tested for each device.
² Parameter tested on a representative sample.
³ qCW mode: repetition rate: 0.5 kHz, pulse duration: 1 ms, duty cycle: 50%.
⁴ Pulse mode: repetition rate: 0.5 kHz, pulse duration: 20 µs, duty cycle: 1%.
Radiation Characteristics (Far Field Pattern)
TO-18 package with glass cap

Related Products
To drive the LED, we recommend the following basic circuit connection:
We recommend using quasi-CW mode with a duty cycle of 50% or 25% to obtain maximum average optical power, and short pulse mode to obtain the highest peak power. Strong CW (continuous wave) mode is not recommended.
Quasi-CW (qCW) mode and Pulse mode
Precautions
Please check your connection circuit before turning on the LED.
Please pay attention to LED polarity: the anode is marked with a red dot; reverse voltage is prohibited.
Do not connect the LED to a multimeter.
Please control the current applied to the LED and do not exceed the maximum allowable value.
Do not touch the glass cap or apply any force to it.
Please pay attention to the operating and storage temperatures; exceeding the allowable range may cause irreparable damage to the glass cap.
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