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I N F R A R E D D E T E C T O R
MCT photoconductive detector
Dewar type detector with high sensitivity and high-speed response in long wavelength range
P2748/P5274 series, P3257-50
Features
l Choice of spectral response range (up to 25 m)
The band gap can be adjusted by controlling the composition
ratio of HgTe and CdTe. Utilizing this fact, various types are
available in different spectral characteristics.
l Photoconductive element that decreases its resistance
by input of infrared light
l Micro-cooled type available
This type of cooling does not require pour-filled liquid
nitrogen.
l Custom devices available
Custom devices not listed in this catalog are also available
with different spectral response, active area sizes and
number of elements.
Glass dewar type not requiring repumping is also provided.
Applications
l FTIR
l Infrared spectrophotometer
l Thermal imaging
l Remote sensing
l CO
2
laser detection
Accessories (Optional)
l Valve operator
A3515
l Amplifiers for dewar type MCT photoconductive detector
C5185
l Power supply for amplifier
C3871
l Infrared detector module with preamp
P7752-10
I General rating / Absolute maximum ratings
Absolute maximum ratings
Nitrogen
maintenance
time
Allowable
current
Operating
temperature
Storage
temperature
Active area
Type No.
Dimensional
outline/
Window
material *
Package
Cooling
(mm)
Min.
(h)
(mA)
Topr
(C)
Tstg
(C)
P2748-40
/Z
Side-on type metal dewar
1 1
40
P2748-41
/Z Head-on type metal dewar
1 1
40
P2748-42
0.25 0.25
20
P5274
/Z
1 1
40
P5274-01
/K
Side-on type metal dewar
LN
1 1
12
20
-40 to +60
-55 to +60
P3257-50
/Z
Stirling type metal Micro-cooled
1 1
-
40
-40 to +55
-45 to +55
I Electrical and optical characteristics (Typ. unless otherwise noted)
Measurement
condition
Element
temperature
T
Peak
sensitivity
wavelength
lp
Cut-off
wavelength
lc
Photo
sensitivity *
2
S
l=lp
D*
(500, 1200, 1)
D*
(lp, 1200, 1)
NEP
l=lp
Rise
time
tr
0 to 63 %
Dark
resistance
Rd
Type No.
(C)
(m)
(m)
(V/W)
Min.
(cmHz
1/2
/W)
Typ.
(cmHz
1/2
/W) (cm Hz
1/2
/W) (W/Hz
1/2
)
(s)
(W)
P2748-40
1000
2.5 10
-12
P2748-41
1000
2.5 10
-12
P2748-42
12
14
10000
1 10
10
2 10
10
4.0 10
10
6.3 10
-12
0.6
40
P5274
14
17
500
2 10
9
1 10
10
1.5 10
10
6.7 10
-12
0.6
30
P5274-01
17
22
250
1 10
9
5 10
9
1.0 10
10
1.0 10
-11
0.4
100
P3257-50
-196
12
14
1000
1 10
10
2 10
10
4.0 10
10
2.5 10
-12
0.6
40
*1: Window material K: KRS-5, Z: ZnSe
*2: Photo sensitivity changes with the bias current. The values in the above table are measured with the optimum bias current.
1
MCT photoconductive detector
P2748/P5274 series, P3257-50
100
10
1
NOISE (nV/Hz )
10
100
FREQUENCY (Hz)
1000
10000
1
2
(Typ. )
WAVELENGTH (m)
0
5
10
15
20
25
10
10
10
9
10
8
(Typ. T= -196 C)
10
11
D
*
(cm Hz
/W)
1
2
P5274-01
P2748-40
P5274
RELATIVE VALUE
BIAS CURRENT (mA)
0
5
10
20
25
4
(Typ.)
15
8
12
16
20
D*
S
N
I Spectral response
KIRDB0072EC
I S/N vs. bias current
KIRDB0073EB
I Noise frequency characteristic
KIRDB0074EC
Spectral response can be shifted upon
request.
The detector must be operated in a range
where the D* becomes Max.
I Measurement circuit
KIRDC0007EA
CHOPPER
1200 Hz
BAND-PASS
FILTER
r.m.s.
METER
BLACK BODY
500 K
DETECTOR
fo=1200 Hz
f=120 Hz
INCIDENT ENERGY: 2.64 W/cm
2
2
MCT photoconductive detector
P2748/P5274 series, P3257-50
I Dimensional outlines (unit: mm)
KIRDA0131EC
P2748-40/-42, P5274 series
KIRDA0129EA
P2748-41
DETECTOR
NC
DETECTOR
8.5 0.5
51.2 1
7.9 1
172 2
PUMP-OUT
PORT 9.5
OUTPUT
PIN
LN
2
FILL PORT 12.5
32 1
6.5
70 2
95 2
102 2
28.5
63.5 1
66 MAX.
46 1
PHOTOSENSITIVE
SURFACE
51 1
32 1
46 1
43 1
37 1
8.5 0.5
6.5
72 1
95 1
102 1
66.8 1
10 1
172 2
28.5
63.5 1
LN
2
FILL PORT 12.5
PHOTOSENSITIVE
SURFACE
SIGNAL
OUTPUT LEAD
PUMP-OUT PIPE 9.5
DETECTOR
NC
DETECTOR
3
MCT photoconductive detector
P2748/P5274 series, P3257-50
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: Smidesvgen 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
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. 2002 Hamamatsu Photonics K.K.
Cat. No. KIRD1021E03
Oct. 2002 DN
KIRDA0130EA
P3257-50
KIR
12.8
25.9
26.8
50.8 0.1
56.0 0.3
20.1 MAX.
34.8 MAX.
39.4
10.6 MAX.
+0
-0.01
12.7
29.0 MAX.
FOV
23.8
28.3 MAX.
38.9 MAX.
PUMP-OUT VALVE 10 MAX.
(2 ) 56UNC-2B DEPTH: 5.5 4PL
MOUNTING HOLE
PHOTOSENSITIVE
SURFACE
MOUNT SIDE
OUTPUT PIN
14.5 MAX.
50.3 MAX.
27.4 MAX.
22
26.7
50.1 MAX.
81.1 MAX.
58
36.4
43
Board thickness including
mounted components: 20 MAX.
70.0
76.5
(4 ) 2.5
4