HAMAMATSU P3257-01, P4249-08, P3257-25, P3257-10 Datasheet
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
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Photoconductive element that decreases its resistance
by input of infrared light
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Custom devices available
Custom devices not listed in this catalog are also
available with different spectral response, active
area sizes and number of element.
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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
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Thermal imaging
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Remote sensing
l
FTIR
l
CO
2
laser detection
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Infrared spectrophotometer
Accessories (Optional)
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Valve operator A3515
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Amplifiers for dewar type MCT photoconductive detector
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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
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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