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High sensitivity, for gas density measurement www.hamamatsu.com 1 The T11361-01 is a high-sensitivity thermopile detector ideal for measuring gas density. It uses a TO-18 package with a window having high transmittance in the 3 to 5 μm spectral band. The T11361-01 can be used for various types of gas analysis by changing the band-pass fi lter (custom order product). Features Applications High sensitivity in 3 to 5 μm spectral band TO-18 package High sensitivity High-speed response Built-in thermistor Low cost Gas density measurement, etc. Absolute maximum ratings Parameter Symbol Value Unit Operating temperature Topr -30 to +85 °C Storage temperature Tstg -40 to +100 °C 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. Electrical and optical characteristics (Ta=25 °C) Parameter Symbol Condition Min. Typ. Max. Unit Spectral response range λ Si with AR coating - 3 to 5 - μm Photosensitivity S 1 Hz, 500 K 40 50 60 V/W Element resistance Rd 100 125 150 k Ω Noise voltage Vn Johnson noise - 45 50 nV/Hz1/2 Noise equivalent power NEP - 0.9 1.3 nW/Hz1/2 Detectivity D* 0.9 × 108 1.3 × 108 - cm·Hz1/2/W Rise time tr 0 to 63% - 20 30 ms T emperature coeffi cient of element resistance TCR - ±0.1 - %/°C Field of view FOV Photosensitivit y 50% - 90 - degrees Thermistor resistance Rth 9 10 11 kΩ Constant B B 25/75 °C 3800 3900 4000 K Structure Parameter Symbol Condition Specifi cation Unit Photosensitive area - Absorption fi lm size 1.2 × 1.2 mm Package - TO-18 - Window - AR coatingSi with 3 to 5 μm high-transmittance -

Thermopile detector T11361-01 Spectral transmittance characteristics of window material Directivity 2.5 100 Wavelength (µm) Transmittance (%) Relative sensitivity (%) (Typ. Ta=25 °C) 20° 10° 0° 10° 20° 90° 80° 50° 40° 30° 70° 60° 90° 80° 50° 40° 30° 70° 60° 80% 40% 60% 20% 100% 3.0 100 3.5 4.0 4.5 5.0 Wavelength (µm) Transmittance (%) KIRDB0449EA KIRDB0451EA KIRDB0450EA

Thermopile detector T11361-01 Operating circuit KIRDC0051EB Dimensional outline (unit: mm) Lead (4 ×) 0.43 5.4 ± 0.2 4.6 ± 0.2 2.5 2.5 Window Pin connections Thermistor Thermopile (+) Thermopile (-) Case 2.54 ± 0.2 1.0 ± 0.2 1.3 ± 0.2 Filter Photosensitive area 1.2 × 1.2 1.8 max.45° KIRDA0240EA Ra Rd Rth Rb Rc Thermopile detector Thermistor 2 67 Vth Vout Gain = 1 + (R2/R1) fhigh = 1/(2πR2 C1)

Cat. No. KIRD1125E01 Jan. 2014 DN www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 8152-375-0, Fax: (49) 8152-265-8 France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777 North Europe: Hamamatsu Photonics Norden AB: Thorshamnsgatan 35 16440 Kista, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1 int. 6, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741 China: Hamamatsu Photonics (China) Co., Ltd.: 1201 Tower B, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866 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. Information described in this material is current as of January, 2014. Thermopile detector T11361-01 Related information www.hamamatsu.com/sp/ssd/doc_en.html Precautions

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