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INFRARED DETECTOR
MCT photoconductive detector
P3257 series, P4249-08
10 µm band infrared detector with high sensitivity and high-speed response
Features
l
High-speed response, high sensitivity in the 10 µm
band detection
l
Photoconductive element that decreases its resistance
by input of infrared light
l
Custom devices available
Custom devices not listed in this catalog are also
available with different spectral response, active
area sizes and number of element.
l
Wide product lineups including non-cooled type,
thermoelectrically cooled type and micro-cooled type
Easy-to-use infrared detector modules with preamp
available.
Specification / Absolute maximum ratings
■
Dimensional
Type No.
P3257-25 0.025 × 0.025 10
P3257-01 0.1 × 0.1 20
P3257-10
P4249-08
*1: 8 elements array
outline/
Window
material
/ZnS
➀
/ZnS
➁
Package Cooling
Metal dewar
Liquid
nitrogen
Applications
l
Thermal imaging
l
Remote sensing
l
FTIR
l
CO
2
laser detection
l
Infrared spectrophotometer
Accessories (Optional)
l
Valve operator A3515
l
Amplifiers for dewar type MCT photoconductive detector
l
Infrared detector module with preamp P7752-10
Active area
(mm) (mA) (°C) (°C)
1 × 1 40
0.5 × 0.5 *
Allowable
current
30
C5185
(with P3257-10)
Absolute maximum ratings
Operating
temperature
Topr
-40 to +60 -55 to +60
temperature
Storage
Tstg
Electrical and optical characteristics (Typ. unless otherwise noted)
■
Measurement
condition
Element
Type No.
P3257-25 1 × 10
P3257-01 3 × 10
P3257-10 1 × 10
P4249-08
*2: Photo sensitivity changes with the bias current. The values in the above table are measured with the optimum bias current.
temperature
T
(°C) (µm) (µm) (V/W)
-196 10.0 12.0
Peak
sensitivity
wavelength
lp
Cut-off
wavelength
lc
Photo
sensitivity *
S
l=lp
#
"
!
!
2 × 10
(cm·Hz
1 × 10
*
D
(500, 1200, 1)
Min.
1/2
/W)
(cm·Hz
2 × 10
Typ.
1/2
D
(lp, 1200, 1)
/W) (cm·Hz
4.0 × 10
1/2
/W)
Rise time
tr
0 to 63 %
(µs)
0.6
*
Dark
resistance
Rd
(W)
40
80
40
1
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MCT photoconductive detector
P3257 series, P4249-08
■ Spectral response
11
10
/W)
1
2
10
10
D* (λ, 1200, 1) (cm · Hz
9
10
2
4
861012
WAVELENGTH (µm)
Spectral response can be shifted
upon request.
■ Noise frequency characteristic
100
(Typ. T= -196 ˚C)
(Typ. )
14
KIRDB0169EA
■ S/N vs. bias current (P3257-10)
20
16
12
8
D*
S
RELATIVE VALUE
4
0 5 10 20 25
15
BIAS CURRENT (mA)
The detector must be operated in a
range where the D* becomes Max.
N
(Typ.)
KIRDB0073EB
■ Multielement active area (P4249-08, unit: µm)
MCT detectors of custom-designed multielement
arrays are also available on request. For the number of elements, element size and packaging, please
consult us with your specific needs.
1
2
10
NOISE (nV/Hz )
1
10 100 1000 10000
FREQUENCY (Hz)
■ Measurement circuit
CHOPPER
1200 Hz
BLACK BODY
500 K
DETECTOR
KIRDB0074EC
500
ACTIVE AREA
20
500
BAND-PASS
FILTER
r.m.s.
METER
fo=1200 Hz
∆f=120 Hz
INCIDENT ENERGY: 2.64 µW/cm
4140
KIRDA0007EA
2
KIRDC0007EA
2
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MCT photoconductive detector
■ Dimensional outlines (unit: mm)
P3257 series, P4249-08
➀ P3257-25/-01/-10
51 ± 1
PHOTOSENSITIVE
SURFACE
37 ± 1
8.5 ± 0.5
LN2 FILL PORT 12.5
46 ± 143 ± 1
32 ± 1
6.5
72 ± 1
95 ± 1
102 ± 1
63.5 ± 1
28.5
66.8 ± 1
DETECTOR
NC
DETECTOR
PUMP-OUT PIPE 9.5
SIGNAL
OUTPUT LEAD
172 ± 2
10 ± 1
➁ P4249-08
51 ± 1
LN2 FILL PORT 12.5
PHOTOSENSITIVE
SURFACE
11 ± 1
37 ± 1
8.5 ± 0.5
43 ± 1 51 ± 1
PIN ARRANGEMENT
6.511.5
70 ± 1
84 ± 1
172 ± 2
NC
CH8
CH7
CH6
CH5
CH4
63.5 ± 1
44.5 ± 1
66.8 ± 1
CH3
CH2
CH1
NC
COM
PUMP-OUT
PIPE 9.5
OUTPUT PIN
KIRDA0131EC
KIRDA0135EA
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2003 Hamamatsu Photonics K.K.
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, 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/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Cat. No. KIRD1023E04
Feb. 2003 DN
3
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