rev 2.0, 12.10.2017 LED34 series Description LED34 series are fabricated from narrow band-gap InAs/InAsSbP heterostructures lattice matched to InAs substrate. This Mid-IR LEDs provide a typical peak wavelength of 3.40 µm, an optical power of typ. 25 µW QCW. There are different options of packaging available, as you can choose between TO-can, with parabolic reflector (R), window (W), and containing thermoelectric cooler and thermoresistor (T). Maximum Ratings Parameter Values Symbol Min. IQCW max IPULSE max ISTR TCASE TSLD Operating Current, QCW mode Operating Current, pulsed mode Storage Temperature * Operating Temperature * Lead Solder Temperature *² Unit Max. 250 2000 +90 +90 +180 -60 -60 mA mA °C °C °C * Temperature range may vary for different packaging types *² must be completed within 5 seconds Photodiode Characteristics (TCASE=25°C) Parameter Symbol Conditions Peak Wavelength Half Width (FWHM) Optical Output Power, QCW * Optical Output Power, pulsed *² Operating Voltage Switching Time λP ∆λ PO PO VOP ts IF=150mA QCW IF=150mA QCW QCW mode * Pulse mode *² IF=200mA QCW Min. 3.30 250 20 150 0.2 Values Typ. Max. 3.44 600 25 180 1.3 Unit µm nm µW µW V ns * Repetition rate: 0.5 kHz, pulse duration: 1 ms, duty cycle: 50%, current: 200 mA *² Repetition rate: 0.5 kHz, pulse duration: 20 µs, duty cycle: 1%, current: 1 A Packages Part Number LED34 LED34-R LED34-RW LED34-TW LED34-TRW Package TO-18 with cap without glass window TO-18 with parabolic reflector without glass window TO-18 with parabolic reflector with glass window TO-5 with built-in thermocooler and thermoresistor, covered by cap with glass window TO-5 with built-in thermocooler and thermoresistor, covered by parabolic reflector with glass window All parameters refer to LEDs in TO18 package with a cavity and operation at ambient temperature 25°C unless otherwise stated. www.roithner-laser.com 1 Performance Characteristics Spectra At Different Temperatures (QCW) Intensity [a.u.] Intensity [a.u.] Typ. Spectra At Different Currents (QCW) Wavelength [nm] Typ. Optical Power Characteristics (QCW) Typ. Current – Voltage Characteristics (QCW) Current [mA] Output Power [µW] Wavelength [nm] Forward Current [mA] Voltage [mV] Radiant Characteristics (Far-Field Pattern) www.roithner-laser.com TO-18 package with Parabolic Reflector Relative Radiant Intensity Relative Radiant Intensity TO-18 Package With Cap 2 Outline Dimensions LED34 TO-18, with cap, without window Lead Description PIN 1 LED Cathode PIN 2 LED Anode (red dot) All Dimensions in mm LED34-R www.roithner-laser.com TO-18, with parabolic reflector, without window Lead Description PIN 1 LED Cathode PIN 2 LED Anode (red dot) All Dimensions in mm 3 LED34-RW LED34-TW TO-18, with parabolic reflector and window Lead Description PIN 1 LED Cathode PIN 2 LED Anode (red dot) All Dimensions in mm TO-5, thermocooler and thermoresistor, cap and window Lead Description PIN 1 TEC + PIN 2 LED Anode (red dot) PIN 3 LED Cathode PIN 4 Thermistor PIN 5 Thermistor PIN 6 TEC - All Dimensions in mm LED34-TRW TO-5, thermocooler and thermoresistor, cap and window Lead Description PIN 1 TEC + PIN 2 LED Anode (red dot) PIN 3 LED Cathode PIN 4 Thermistor PIN 5 Thermistor PIN 6 TEC - All Dimensions in mm www.roithner-laser.com 4 Operating Regime LED Basic Circuit Connection LED With Thermoelectric Module We recommend to use Quasi Continuous Wave (QCW) mode with duty cycle 50% or 25% to obtain maximum average optical power and Pulse mode to obtain maximum peak power. Hard CW (continuous wave) mode is NOT recommended. Quasi Continuous Wave (QCW) mode www.roithner-laser.com Pulse Mode 5 Precautions Cautions: Check your connection circuits before turning on the LED. Mind the LED polarity: LED anode is marked with a RED dot. Reverse voltage applying is FORBIDDEN! DO NOT connect the LED to the multimeter. Control the current applied to the LED in order not to exceed the maximum allowable values. Soldering: Do avoid overheating of the LED Do avoid electrostatic discharge (ESD) Do avoid mechanical stress, shock, and vibration Do only use non-corrosive flux Do not apply current to the LED until it has cooled down to room temperature after soldering Static Electricity: LEDs are sensitive to electrostatic discharge (ESD). Precautions against ESD must be taken when handling or operating these LEDs. Surge voltage or electrostatic discharge can result in complete failure of the device. Operation: Do only operate LEDs with a current source. Running these LEDs from a voltage source will result in complete failure of the device. Current of a LED is an exponential function of the voltage across it. Usage of current regulated drive circuits is mandatory. © All Rights Reserved The above specifications are for reference purpose only and subjected to change without prior notice www.roithner-laser.com 6