Datasheet P2750-08, P3257-30, P3981-01, P2750, P3981 Datasheet (HAMAMATSU)

INFRARED DETECTOR

p

g

y

(µm)

(

)

(

)

MCT photoconductive detector

P3257/P3981/P2750 series

Non-cooled type and TE-cooled type suitable for long, continuous operation

Features

l

Choice of spectral response (up to 12 µm)
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

Custom devices available
Custom devices not listed in this catalog are also
available with different spectral response, active area
size and number of element.

l

Easy-to-use infrared detector modules with preamp
available

■

General ratings / Absolute maximum ratings

Dimensional

Type No.

P3257-30

P3257-31

P3981
P3981-01
P2750-08
P2750
P2750-06

*1: W ind ow ma terial S : Sapphire glass

outline/

Window

material *

➀

/Se

/Se TO-8

➁

/S TO-8 3

➁

/S TO-66 3

➂

/S TO-8

➁
➃

/S TO-3

Se:

Package Cooling

1

with BNC connector

ZnSe

Non-cooled - - 50

One-stage

TE-cooled

Two-stage

TE-cooled

Three-stage

TE-cooled

Applications

l

Radiation thermometer

l

Gas analyzer

l

Infrared spectrophotometer

l

FTIR

l

CO

2

laser monitor

Accessories (Optional)

l

Heatsink for one-stage TE-cooler A3179

l

Heatsink for two-stage TE-cooler A3179-01

l

Heatsink for three-stage TE-cooler A3179-04

l

Temperature controller C1103-05 (-25 to -75 ˚C)

l

Preamp C5185-01 (P3981/P2750 series)

l

Infrared detector modules with preamp

Active

area

(mm ) (mW ) (A) (mA) (°C) (°C)

1 × 1

0.25 × 0.25

Thermistor

power

dissipation

0.2

Absolute maximum ratings

TE-cooler

allowable

current

1.5 50

1.0

C1103-07 (20 to -30 ˚C)

P4631-10 (P3257-31)
P4631 (P3981)
P4631-04 (P2750)

Allowable

current

Operating

temperature

Topr

-40 to +60 -55 to +60

6
6
3

temperature

Storage

Tstg

■ Electrical and optical characteristics (Typ. unless otherwise noted)

Measurement

condition
Element

Type No.

P3257-30 25 6.0 11.0 2 × 10-35.0 × 1053.0 × 1062.0 × 1055.0 × 10-71 (ns) 30
P3257-31 0 6.5 11.5 5 × 10-31.0 × 1066.0 × 1065.0 × 1052.0 × 10-71 (ns) 35
P3981
P3981-01
P2750-08
P2750 2 × 10
P2750-06
*2: Photo sensitivity changes with the bias current. The values in the above table are measured with the optimum bias current.
*3: P3257-30/-31: λ=10.6 µm
*4: P3257-30/-31: (800, 1200, 1)

temperature

T

(°C)

-30

-60 4.8 5.5

Peak

se nsitiv ity

wavelength

Cut-off

wavelen

λ

λ

3.6 4.6 1 × 10

4.8 5.4 3 × 1021.0 × 1086.0 × 1084.0 × 1092.5 × 10

c

(µm) (V/W )

sensitivit

th

Photo

S

λ=λ

p *

3 × 10

2

*

(500, 1200, 1) *

3

(cm· Hz

4

2.0 × 1082.0 × 1095.0 × 10102.0 × 10

3

5.0 × 1083.0 × 1092.0 × 10

3

Min.

∗

D

1/2

/W)

Typ.

(cm· Hz

4

1/2

/W)

∗

D

(λp *3, 1200, 1)

1/2

cm·Hz

/W

10

NEP

λ=λ

W/Hz

5.0 × 10

1.3 × 10

p *

3

1/2

-12

-11

-12

-12

Rise time

tr

0 to 63 %

(µs)

10 600

2 160

3 200

Dark

resistance

Rd

(Ω)

1

■ Spectral response

MCT photoconductive detector

P3257/P3981/P2750 series

1

2

D* (λ, 1200, 1) (cm · Hz /W)

1

2

P3257-30/-31

8

10

P3257-31 (T=0 ˚C)

7

10

P3257-30 (T=25 ˚C)

6

10

5

10

2468 1210357911

WAVELENGTH (µm)

P2750/-06/-08

11

10

P2750/-06 (T= -60 ˚C)

10

10

P3981/-01

(Typ.)

KIRDB0164EB KIRDB0066EB

1

2

D* (λ, 1200, 1) (cm · Hz /W)

11

10

T= -30 ˚C

10

10

T=0 ˚C

9

10

8

10

2345

WAVELENGTH (mm)

■ D* vs. element temperature

(Typ.)

11

10

P3981

1

2

10

10

P2750

(Typ.)

(Typ.)

9

10

8

10

P2750-08 (T= -30 ˚C)

D* (λ, 1200, 1) (cm · Hz /W)

7

10

23456

WAVELENGTH (µm)

■ S/ N vs. bias current (P2750)

10

9
8
7
6
5
4

RELATIVE VALUE

3
2
1
0

03512 4

D*

S

N

(Typ.)

KIRDB0068EB

9

10

D* (λ, 1200, 1) (cm · Hz /W)

8

10

-80 0 40

-60 -40 -20 20

ELEMENT TEMPERATURE (˚C)

■ Cooling characteristics of TE-cooler

[Typ. Ta=25 ˚C, thermal resistance of heatsink=3 ˚C/W (one and two-stage TE-cooled),

40

20

0

ONE-STAGE
TE-COOLED TYPE

TWO-STAGE
TE-COOLED TYPE (TO-8)

-20

-40

-60

ELEMENT TEMPERATURE (˚C)

THREE-STAGE
TE-COOLED TYPE

-80

0.40

1.2 ˚C/W (three-stage TE-cooled)]

TWO-STAGE
TE-COOLED TYPE (TO-66)

0.8 1.2 1.6

KIRDB0174EA

CURRENT (mA)

KIRDB0070EC

CURRENT (A)

KIRDB0175EA

The detector must be operated in a range
where the D* becomes Max.

2

MCT photoconductive detector

P3257/P3981/P2750 series

■ Current - voltage characteristics of TE-cooler

[Typ. Ta=25 ˚C, thermal resistance of heatsink=3 ˚C/W (one and two-stage TE-cooler),

1.6

1.4

1.2

1.0

0.8

0.6

CURRENT (A)

0.4

0.2

0.0

ONE-STAGE
TE-COOLED TYPE

TWO-STAGE
TE-COOLED TYPE

1.0 1.5 2.0 2.5

0.50

VOLTAGE (V)

1.2 ˚C/W (three-stage TE-cooler)]

THREE-STAGE
TE-COOLED TYPE

KIRDB0176EB

■ Measurement circuit

CHOPPER

1200 Hz

■ Thermistor temperature characteristic

1 MΩ

100 kΩ

10 kΩ

SENSOR RESISTANCE

1 kΩ

-80 0 40-60 -40 -20 20

ELEMENT TEMPERATURE (˚C)

BAND-PASS

FILTER

r.m.s.

METER

(Typ.)

KIRDB0071EB

BLACK BODY

500 K

■ Connection example (P3981)

BNC CONNECTOR
CABLE (SOLD SEPARATELY)

A3179-01

DETECTOR &

C4696

CHOPPER

BNC CONNECTOR
CABLE (SOLD SEPARATELY)

HEATSINK

P3981

+

DETECTOR

fo=1200 Hz
∆f=120 Hz
INCIDENT ENERGY: 2.64 µW/cm

CABLE (SUPPLIED WITH C5185)

POWER SUPPLY FOR AMP

C3871

C5185-01

C1103-05

AMP

TEMPERATURE
CONTROLLER

LOCK-IN AMP OR

SPECTRUM ANALYZER

CABLE (SUPPLIED WITH C1103-05)
Connect C1103-05 and C3871 ground wires together.

2

KIRDC0005EA

SIGNAL

PROCESSING

CIRCUIT

KIRDC0006EA

3

MCT photoconductive detector

■■

■

Dimensional outlines (unit: mm)

■■

P3257/P3981/P2750 series

➀ P3257-30

20

5

41.2

9.0

PHOTOSENSITIVE

5.0

SURFACE

32 MAX.

24.4 ± 0.2

54.0

1.3

20

11.7

BNC CONNECTOR

KIRDA0121EA

➁ P3257-31, P3981, P2750-08

15.3 ± 0.2
14 ± 0.2

WINDOW
10 ± 0.2

a

PHOTOSENSITIVE
SURFACE

0.45
LEAD

10.2 ± 0.2

5.1 ± 0.2

5.1 ± 0.2

➃ P2750/-06➂ P3981-01

39 ± 0.2

30.1 ± 0.1

10 ± 0.212 MIN.

DETECTOR
DETECTOR
TE-COOLER (-)
TE-COOLER (+)
THERMISTOR

P3257-31 P3981, P2750-08

5.2 ± 0.2a 6.6 ± 0.2

KIRDA0122EA

3.7

WINDOW
10 ± 0.1

PHOTOSENSITIVE
SURFACE

1.6 ± 0.1

3.5 MAX.

9 ± 0.2

14 ± 0.1

36˚

17 ± 0.4

11 ± 0.5

9 ± 1

PUMP-OUT PIPE

Information furnished by HAMAMATSU is believed to be reliable. Ho w ever, 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.

5.1 ± 0.2

25 MAX.

THERMISTOR
DETECTOR
DETECTOR
TE-COOLER (-)
TE-COOLER (+)

KIRDA0123EB

4

PHOTOSENSITIVE
SURFACE

1.0
LEAD

PUMP-OUT PIPE

40˚ 40˚

19.4 ± 0.2

WINDOW

10 ± 0.2

12.7 ± 0.2

5.0 ± 0.2

5 MAX.

25.4 ± 0.2

12 ± 1

40˚40˚

40˚

11.6 ± 0.2

2.0

25 MAX.

TE-COOLER (+)
DETECTOR
THERMISTOR
PUMP-OUT PIPE
NC
TE-COOLER (-)

HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: [phone], Fax: [phone], 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: [phone], Fax: [phone]
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: [phone], Fax: [phone]
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: [phone], Fax: [phone]
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

4

KIRDA0045ED

Cat. No. KIRD1025E06
Jul. 2003 DN