Power, µw Current, ma Intensity, a.u. Intensity, a.u. Mid-Infrared (MIR) Light-Emitting Diode Lms34LEDhp series Device parameters Symbol Value Units Operating/ storage temperature -6..+9* C Soldering temperature (can be applied for not more than 5 secs) *Temperature range may vary for different packaging types. T stg T sol +8 C All parameters refer to LEDs in TO8 package with a cavity and operation at ambient temperature 5 C unless otherwise stated. LED parameters Conditions Symbol Value Units Peak emission wavelength FWHM of the emission band Average optical power (minimal / typical) Peak optical power (minimal / typical) Maximum operating current Forward voltage qcw mode 3 I = 5 ma qcw mode 3 I = 5 ma qcw mode 3 I = ma Pulse mode 4 I = A qcw mode 3 Pulse mode 4 qcw mode 3 I = ma λ p FWHM 5-6 nm P qcw P pul I max qcw 3.3-3.44 µm min 45 / typ 5 µw min 35 / typ 37 µw 5 ma I max pulse A V. -.8 V Typical spectra at different currents (qcw 3 ) 5 5 5 5mA ma 5mA ma 3 8 33 38 43 Wavelength, nm Spectra at different temperatures (qcw 3, 5 ma) 3 5 C 5 5 C 5 C 5 5 3 8 33 38 43 Wavelength, nm Typical optical power characteristic (qcw 3 ) Typical current-voltage characteristic (qcw 3 ) 7 6 5 4 3 5 5 5 Current, ma 5 5 5 - -5 3 4 Voltage, mv Parameter tested for each device. Parameter tested for representative sampling. 3 qcw mode: repetition rate:.5 KHz, pulse duration: ms, duty cycle: 5%. 4 Pulse mode: repetition rate:.5 KHz, pulse duration: µs, duty cycle: %. Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page (8)
Relative radiant intensity Relative radiant intensity Mid-Infrared (MIR) Light-Emitting Diode Packages TO-8 with a cap without a glass window TO-8 with a parabolic reflector without a glass window TO-8 with a parabolic reflector with a glass window TO-5 with a built-in thermocooler and thermoresistor, covered by a cap with a glass window TO-5 with a built-in thermocooler and thermoresistor, covered by a parabolic reflector with a glass window Model Lms34LEDhp Lms34LEDhp-R Lms34LEDhp-RW Lms34LEDhp-TEM Lms34LEDhp-TEM-R Radiant characteristics (far-field pattern) TO-8 package with a cap TO-8 package with a parabolic reflector 3 4 3 4 5 5 6 6 7 7 8 8..8.6.4. 9..8.6.4. 9 Related products: Photodiodes Lms36PD series - detectors of mid-infrared radiation; LED drivers (D-4i, D-5i, minidrivers md-c, md-p ) - provide LED power supply in pulse modes. Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page (8)
Drive current Mid-Infrared (MIR) Light-Emitting Diode To drive the LED we recommend the following basic circuit connections: LED basic circuit connection LED with thermoelectric module basic circuit connection Pulse generator LED Ohm thermocooler I adjust Constant current source We recommend using Quasi Continuous Wave (qcw) mode with a duty cycle 5% or 5% to obtain maximum average optical power and short Pulse modes to obtain maximum peak power. Hard CW (continius wave) mode is NOT recommended. Quasi Continuous Wave (qcw) mode Pulse mode - μs f =.5-6 khz 3- μs 3- μs max..5 A Drive current f =.5-6 khz 6 - μs max. A Time Time IMPORTANT CAUTIONS: please check your connection circuit before turning on the LED; please mind the LED polarity: anode is marked with a RED dot; REVERSE voltage applying is FORBIDDEN; please do not connect the LED to the multimeter; please control the CURRENT applied to the LED in order NOT to EXCEED the maximum allowable values. Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 3 (8)
Lms34LEDhp 4,8±, 3,5±, 4,±, 3,5±,5,6±,,,3 pins,4 - LED cathode - LED anode 45,5±, 5,6±, Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 4 (8)
Lms34LEDhp-R 9,±, 8,4±, 3,5±,5,6±,,3 5,±, pins,4, - LED cathode - LED anode 45,5±, 5,6±, Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 5 (8)
Lms34LEDhp-RW 9,±, 8,4±, 3,5±,5,6±,,3 5,±, pins,4, - LED cathode - LED anode 45,5±, 5,6±, Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 6 (8)
Lms34LEDhp-TEM 9,±, 8,3±, 5±, on Si substrate,4,,6±, 6,6±, 3,5 6 pins,45 - TEC + - LED anode 3 - LED cathode 4 - thermistor 5 - thermistor 6 - TEC - 4 3 3 4 5 5 6 6,98,8 3 Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 7 (8)
Lms34LEDhp-TEM-R 5±, on Si substrate,4 7,±, 6 pins,45 3,5 - TEC + - LED anode 3 - LED cathode 4 - thermistor 5 - thermistor 6 - TEC - 4 3 3 4 5 5 6 6,98,8 3 Rev.6, A, Kurchatova str., N, St-Petersburg, 943, Russia; info@lmsnt.com; www.lmsnt.com page 8 (8)