S3931

S3931_15 HAMAMATSU | Alldatasheet

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Technical content

Features

/K6C Superior position detection ability /K6C High reliability /K6C S3931, S3932: Easy to use 4-pin small ceramic package /K6C Long and narrow active area S3270: 1 × 37 mm

Applications

/K6C Displacement sensing /K6C Distance measurement /K6C Proximity switching PSD One-dimensional PSD 6 to 37 mm resistance length PSD for precision distance measurement I General ratings / Absolute maximum ratings Absolute maximum ratings Active area size Reverse voltage VR Max. Operating temperature Topr Storage temperature Tstg Type No. Package Window material *1 (mm) (V) (°C) (°C) S3931 R 1 × 6 S3932 R 1 × 12 -10 to +60 S3270 *2 Ceramic R (B) 1 × 37 -10 to +75 -20 to +80 I Electrical and optical characteristics (Typ. Ta=25 °C, unless otherwise noted) Spectral response range λ Peak sensitivity wavelength λp Photo sensitivity S λ=λp Interelectrode resistance Rie Vb=0.1 V Position detection error * 3 E VR=5 V light spot φ200 µm Saturation photocurrent *4 VR=5 V R L=1 k Ω Dark current ID VR=5 V Temp. coefficient of ID TCID Rise time tr VR=5 V R L=1 k Ω Terminal capacitance Ct VR=5 V f=10 kHz Position resolution *5 Type No. (nm) (nm) (A/W) Min. (kΩ ) Typ. (kΩ ) Max. (kΩ ) Typ. (µm) Max. (µm) (µA) Typ. (nA) Max. (nA) (times/°C) (µs) (pF) (µm) S3931 ±30 ±120 0.15 10 1.5 40 0.2 S3932 320 to 1100 920 0.55 30 50 80 ±60 ±240 100 0.2 20 3.0 80 0.3 S3270 700 to 1100 960 0.55 10 15 20 ±100 ±400 300 0.5 20 1.15 1.0 100 2.8 *1: R: clear resin coating, R (B): visible-cut resin coating. *2: Works with microscopic spot light detection. *3: A range of 75 % of that from the center of the photosensitive surface to the edge. *4: The upper limit of linearity of photocurrent in response to the quantity of light is defined as the point where the lineari ty deviates by 10 %. *5: Position resolution This is the minimum detectable light spot displacement. The detection limit is indicated by the distance on the photosensitive surface. The numerical value of the resolution of a position sensor using a PSD is proportional to both the length of the PSD and the noise of the measuring system (resolution deteriorates) and inversely proportional to the photocurrent (incident energy) of the PSD (resolution improves). Light source: LED (900 nm) Photocurrent: 1 µA Spot light size: φ 200 µm Circuit system input noise: 1 µV (1 kHz) Frequency range: 1 kHz Interelectrode resistance: Typical value (refer to the specification table)

One-dimensional PSD S3931, S3932, S3270 I Spectral response 300 -0.5 +1.0 +2.0 +1.5 +0.5 400 500 600 700 WAVELENGTH (nm) TEMPERATURE COEFFICIENT (%/˚C) 800 900 1000 1100 (Typ.) S3931, S3932 S3270 0.2 0.4 0.8 0.6 (Typ. Ta=25 ˚C) 400 600 WAVELENGTH (nm) PHOTO SENSITIVITY (A/W) 800 1000 S3931 S3932 QE=100 % QE=50 % S3270 KPSDB0069EC I Photo sensitivity temperature characteristics KPSDB0070EC 10.1 1 pA 10 pA 100 pA 1 nA 10 nA 10 100 REVERSE VOLTAGE (V) DARK CURRENT (Typ. Ta=25 ˚C) S3270 S3931 S3932 0.1 1 1 pF 10 pF 100 pF 1 nF 10 nF 10 100 REVERSE VOLTAGE (V) TERMINAL CAPACITANCE S3931 S3932 S3270 (Typ. Ta=25 ˚C, f=10 kHz) I Dark current vs. reverse voltage KPSDB0071EC I Terminal capacitance vs. reverse voltage KPSDB0072EC

One-dimensional PSD S3931, S3932, S3270 -6 -4 -2-5 -3 -1 0 -150 -100 -50 +50 +100 +150 +6+4+2 +5+3+1 POSITION ON PSD (mm) POSITION DETECTION ERROR ( /K6D m) KPSDB0012EB POSITION ON PSD +20 +100 -100 POSITION DETECTION ERROR (µm) KPSDC0010EA L X1 X2 ACTIVE AREA x I Conversion formula of spot light position on the PSD If output signals (photocurrent) I 1 and I2 are obtained from electrodes X1 and X2, then the light spot position (x) on the PSD can be found by the following formula. I2 - I1 2x I1 + I2 L= -3 -2 -1 0 -150 -100 -50 +50 +100 +150 +3+2+1 POSITION ON PSD (mm) POSITION DETECTION ERROR ( /K6D m) KPSDB0011EB KPSDC0068EA I Example of position detectability (Ta=25 °C, λ=900 nm, spot light size: φ0.2 mm) I Correction for position detection error Position detection characteristics obtained by the above formula can be corrected to reduce position detection errors. For example, the maximum position detection error (±120 µm) of S3931 can be significantly reduced to ±9 µm by using the least square method. S3931 S3270 S3932

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, www.hamamatsu.com 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: Smidesvägen 12, SE-171 41 Solna, 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 Information described in this material is current as of April, 2011. Product specifications are subject to change without prior notice due to improvements or other reasons. Before assembly into final products, please contact us for the delivery specification sheet to check the latest information. 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. One-dimensional PSD S3931, S3932, S3270 Cat. No. KPSD1002E06 Apr. 2011 DN I Dimensional outlines (unit: mm) ACTIVE AREA5.5 ± 0.25 3.02.2 42.3 ± 0.4 55 ± 0.5 1.0 1.0 1.4 2.5 ± 0.28.5 ± 1.5 PHOTOSENSITIVE SURFACE 0.45 ± 0.05 LEAD ANODE (X1) CATHODE (COMMON) ANODE (X2) 5.0 ± 0.2 4.0 R2.0 (2 ×) R1.1 X 1.7 KPSDA0050EB KPSDA0048EA 9.2 ± 0.2 5.08 ± 0.3 (4 ×) 0.44.0 4.8 ± 0.2 ACTIVE AREA 0.7 5.08 ± 0.3 (4 ×)0.25 PHOTOSENSITIVE SURFACE 1.5 ± 0.2 CATHODE (COMMON) ANODE (X2) CATHODE (COMMON) ANODE (X1) X KPSDA0049EA 4.0 (4 ×) 0.4 10.16 ± 0.4 5.08 ± 0.3 ACTIVE AREA PHOTOSENSITIVE SURFACE 0.7 CATHODE (COMMON) ANODE (X2) CATHODE (COMMON) ANODE (X1) (4 ×)0.25 4.8 ± 0.21.5 ± 0.2 15.2 ± 0.2 X S3931 S3932 S3270