PbSe photoconductive detectors P9696 series P327-8 Infrared detectors with fast response and high sensitivity in 5 μm wavelength band Compared to other detectors used in the same wavelength regions, PbSe photoconductive detectors have faster response and can operate at room temperature, making them widely used in gas analyzers, etc. Cooling these detectors increases the sensitivity and improves the S/N. So cooled type PbSe photoconductive detectors are widely used in high-precision photometry such as for analytical instruments. Features High-speed response Room temperature type and available Lower temperature detection limit: approx. 5 C With bandpass filter: P327-8 Applications Gas analyzer (CH4, CO, CO2) Radiation thermometer Flame detector Film thickness gauge Accessories (options) Heatsink for one-stage A379 Heatsink for two-stage A379- Temperature controller for C3-4 Amplifier for PbS/PbSe photoconductive detector C3757-2 Infrared detector module with preamp Non-cooled type P4245 Cooled type P4639 Specifications / Absolute maximum ratings Type no. Dimensional outline* Package Cooling area power dissipation* 2 TE-cooler voltage consumption Absolute maximum ratings TE-cooler Incident Supply* 3 current light level voltage consumption Pin Vs Operating temperature Topr Storage temperature Tstg (mm) (mw) (V) (A) (W/cm 2 ) (V) ( C) ( C) P9696-2 2 2 ()/S TO-5 P9696-3 3 3 Non-cooled - - - TO-5* P327-8 (2)/S 4 2 2 (with filter) -3-3 to +5-55 to +6 P9696-2 One-stage 2 2 (3)/S.85.5 P9696-3 TE-cooled 3 3 TO-8.2 P9696-22 Two-stage 2 2 (4)/S.95. P9696-23 TE-cooled 3 3 Soldering conditions 26 C or less, within seconds *: S=Sapphire glass *2: recommended power dissipation=.3 mw max. *3: Voltage applied to a PbSe detector through a load resistor *4: Half width=4 nm Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. www.hamamatsu.com
PbSe photoconductive detectors P9696 series, P327-8 Electrical and optical characteristics (, unless otherwise noted) Type no. Measurement condition Element temperature Td Peak sensitivity wavelength λp Cut-off wavelength λc Photosensitivity* 4 S λ=λp Vs=5 V Detectivity D* (5, 6, ) (λp, 6, ) Rise time tr to 63% resistance T=25 C B constant T=- to 25 C Dark resistance Rd ( C) (μm) (μm) Min. (V/W) (V/W) Min. (cm Hz /2 /W) (cm Hz /2 /W) (cm Hz /2 /W) (μs) Max. (μs) (kω) (MΩ) P9696-2.5 4. 4.8 3 3 25 2.5 8 2.5 P9696-3 6.7 2.3 3 9 8 -. to 3 P327-8* 5 4.25 4.35 7.8 2.5 3 - -.3 9 P9696-2 5.6 33-4. 5. 7.5 3 2.5 8 5 8 5 P9696-3 2.5 3 3.3 3 9 2 9. P9696-22 6.7-2 4.2 5.2 4 5 8 9 P9696-23 3 3 4.7 3.5 to *4: Chopping frequency=6 Hz, load resistance=nearly equal to detector dark resistance *5: Half width=4 nm Spectral response P9696 series P327-8 () ( Td=25 C) D* (λ, 6, ) (cm Hz /2 /W) 9 Td=25 C Td=-2 C Td=- C D* (λ, 6, ) (cm Hz /2 /W) 9 8 8 2 3 4 5 6 7 Wavelength (µm) KIRDB342EF 7 4. 4. 4.2 4.3 4.4 4.5 Wavelength (µm) KIRDB54EB 2
PbSe photoconductive detectors P9696 series, P327-8 Spectral transmittance of window material S/N vs. supply voltage (P9696-2) Transmittance (%) 9 8 7 6 5 4 3 2 () Signal (µv) 6 4 2 8 6 4 Light source: black body 5 K Incident energy: 6.7 µw/cm 2 Chopping frequency: 6 Hz Frequency bandwidth: 6 Hz Supply voltage is the value which contains load resistance. S (Signal) N (Noise) ( Ta=25 C) 2 5 5 Noise (µv) 2 2 3 4 5 6 7 8 9 2 4 6 8 2 Wavelength (µm) Supply voltage (V) KIRDB55EA KIRDB547EA S/N vs. chopping frequency Photosensitivity vs. element temperature 2 Light source: black body 5 K Incident energy: 6.7 µw/cm 2 Supply voltage: 5 V S/N (Ta=25 C) ( Ta=25 C) S/N (relative value) S (Signal) N (Noise) Relative sensitivity - -2 2 3 Light source: black body 5 K Supply voltage: 5 V Incident energy: 6.7 µw/cm 2 Chopping frequency: 6 Hz. -3-2 - 2 3 4 5 Chopping frequency (Hz) Element temperature ( C) KIRDB44EB KIRDB442EC Increasing the chopping frequency reduces the /f noise and results in an S/N improvement. The S/N can also be improved by narrowing the noise bandwidth using a lock-in amplifier. Cooling the device enhances its sensitivity, but the sensitivity also depends on the load resistance in the circuit. 3
PbSe photoconductive detectors P9696 series, P327-8 Dark resistance, rise time vs. element temperature Linearity ( Ta=25 C) 2 ( Ta=25 C, fully illuminated) Dark resistance Relative value Rise time Relative sensitivity - -2. -3-2 - 2 3 4 5-3 Dependent on NEP -7-6 -5-4 -3-2 Element temperature ( C) Incident light level (W/cm 2 ) KIRDB443EC KIRDB56EA By making the incident light spot smaller than the photosensitive area, the upper limit of the linearity becomes lower. Cooling characteristics of TE-cooler Current vs. voltage characteristics of TE-cooler 4 ( Ta=25 C, Thermal resistance of heatsink=3 C/W).6 ( Ta=25 C, Thermal resistance of heatsink=3 C/W).4 Element temperature ( C) 2-2 -4 Two-stage One-stage Current (A).2..8.6.4.2 One-stage Two-stage -6.2.4.6.8..2.4.6 Current (A) KIRDB85EB.2.4.6.8..2 Voltage (V) KIRDB5EC 4
PbSe photoconductive detectors P9696 series, P327-8 temperature characteristics 6 ( power dissipation=.3 mw max.) Resistance (Ω) 5 4 3-3 -2-2 3 4 5 Temperature ( C) KIRDB546EA Connection example (P9696-23) Cable (supplied with C3757-2) C4696 Chopper 2-conductor shielded cable P9696-23 + A379- and heatsink BNC connector cable (sold separately) C3757-2 C3-4 Power supply for amp Amp Temperature controller Cable (supplied with C3-4) Lock-in amp or spectrum analyzer Connect the C3-4 and power supply ground terminals together. Signal processing circuit KIRDC93EA 5
PbSe photoconductive detectors P9696 series, P327-8 Dimensional outlines (unit: mm) () P9696-2/-3 (2) P327-8 9. ±.3 9. ±.3 8. ±. 5.5 ±. 2. ±.2 4.2 ±.2 Filter 5.2 5.2.5t 8. ±. 5.5 ±. 2. ±.2 3. ±.2 4.2 ±.2.45.4 Max. 8 Min..45.4 max. 8 min..8 ±.2 5. ±.2.5 Max. 5. ±.2 45.8 ±.2 GND.2 mm max..5 max. GND.2 mm max. KIRDA23EA KIRDA83EB (3) P9696-2/-3 (4) P9696-22/-23 5.3 ±.2 5.3 ±.2 4 ±.2 ±.2 6.4 ±.2 4 ±.2 ±.2 ±.2.45.2 ±.2 4.3 ±.2 2 Min..45 6.7 ±.2 2 Min. 5. ±.2 5. ±.2 TE-cooler (-) TE-cooler (+).3 mm max. KIRDA28EB 5. ±.2 5. ±.2.2 ±.2 TE-cooler (-) TE-cooler (+).3 mm max. KIRDA25EB 6
PbSe photoconductive detectors P9696 series, P327-8 Related information www.hamamatsu.com/sp/ssd/doc_en.html Precautions Notice Metal, ceramic, Plastic products/precautions Technical information infrared detector/technical information Information described in this material is current as of July, 23. Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always contact us for the delivery specification sheet to check the latest specifications. Type numbers of products listed in the delivery specification sheets or supplied as samples may have a suffix "(X)" which means preliminary specifications or a suffix "(Z)" which means developmental specifications. The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use. Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission. www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Solid State Division 26- Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (8) 53-434-33, Fax: (8) 53-434-584 U.S.A.: Hamamatsu Corporation: 36 Foothill Road, P.O.Box 69, Bridgewater, N.J. 887-9, U.S.A., Telephone: () 98-23-96, Fax: () 98-23-28 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr., D-822 Herrsching am Ammersee, Germany, Telephone: (49) 852-375-, Fax: (49) 852-265-8 France: Hamamatsu Photonics France S.A.R.L.: 9, Rue du Saule Trapu, Parc du Moulin de Massy, 9882 Massy Cedex, France, Telephone: 33-() 69 53 7, Fax: 33-() 69 53 7 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, Tewin Road, Welwyn Garden City, Hertfordshire AL7 BW, United Kingdom, Telephone: (44) 77-294888, Fax: (44) 77-325777 North Europe: Hamamatsu Photonics Norden AB: Thorshamnsgatan 35 644 Kista, Sweden, Telephone: (46) 8-59-3-, Fax: (46) 8-59-3- Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, int. 6, 22 Arese, (Milano), Italy, Telephone: (39) 2-935-8-733, Fax: (39) 2-935-8-74 China: Hamamatsu Photonics (China) Co., Ltd.: 2 Tower B, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 2, China, Telephone: (86) -6586-66, Fax: (86) -6586-2866 Cat. No. KSPD73E3 Jul. 23 DN 7