Datasheet P5274-01, P2748-42, P2748-40, P5274, P3257-50 Datasheet (HAMAMATSU)

INFRARED DETECTOR

MCT photoconductive detector

P2748/P5274 series

,

P3257-50

Dewar type detector with high sensitivity and high-speed response in long wavelength range

Features

l

Choice of spectral response range (up to 25 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

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.

■ General rating / Absolute maximum ratings

Dimensional

Type No.

P2748-40
P2748-41
P2748-42 0.25 × 0.25 20
P5274
P5274-01
P3257-50

outline/

Window

materi al *

/Z

➀

/Z

➁

/Z

➀

/K

➀

/Z Stirling type metal Micro-cooled 1 × 1 - 40 -40 to +55 -45 to +55

➂

Package Cooling



Side-on type metal dewar

Head-on type metal dewar

Side-on type metal dewar

LN

Applications

l

FTIR

l

Infrared spectrophotometer

l

Thermal imaging

l

Remote sensing

l

2

laser detection

CO

Accessories (Optional)

l

Valve operator A3515

l

Amplifiers for dewar type MCT photoconductive detector

l

Power supply for amplifier C3871

l

Infrared detector module with preamp P7752-10

Nitrogen

Active area

(mm)

1 × 1 40
1 × 1 40

1 × 1 40
1 × 1

maintenance

time
Min.

(h) (mA)

12

Absolute maximum ratings

Allowable

current

20

Operating

temperature

Topr

(°C)

-40 to +60 -55 to +60

C5185

Storage

temperature

Tstg

(°C)

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

Measurement

condition

Ele ment

Type No.

P2748-40 1000 2.5 × 10
P2748-41 1000 2.5 × 10
P2748-42
P5274 14 17 500 2 × 10
P5274-01 17 22 250 1 × 10
P3257-50
*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.

temperature

T

(°C) (µm) (µm) (V/W)

-196

Peak

sensitivity

wavelength

lp

12 14

12 14 1000 1 × 10

Cut-off

wavelength

lc

Photo

sensitivity *

S

l=lp

10000

2

(cm·Hz

1 × 10

*

D

(500, 1200, 1)

Min.

1/2

/W)

(cm·Hz

10

2 × 10

9

1 × 10

9

5 × 1091.0 × 10101.0 × 10

10

2 × 10

Typ.

1/2

*

D

(lp, 1200, 1)

/W) (cm·Hz

10

10

10

1/2

/W)

4.0 × 10

1.5 × 10106.7 × 10

4.0 × 10102.5 × 10

10

NEP
l=lp

(W/Hz

6.3 × 10

Rise
time

tr

0 to 63 %

1/2

)(µs)

-12

-12

0.6 40

-12

-12

0.6 30

-11

0.4 100

-12

0.6 40

Dark

resist ance

Rd

(W)

1

MCT photoconductive detector

P2748/P5274 series, P3257-50

■ Spectral response

11

10

P2748-40

10

10

/W)

1

2

9

10

D* (cm · Hz

8

10

0 5 10 15 20 25

Spectral response can be shifted upon
request.

P5274

P5274-01

WAVELENGTH (µm)

(Typ. T= -196 ˚C)

KIRDB0072EC

■ S/N vs. bias current

20

16

12

8

RELATIVE VALUE

4

0 5 10 20 25

BIAS CURRENT (mA)

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

(Typ.)

D*

S

N

15

KIRDB0073EB

■ Noise frequency characteristic

100

1

2

10

NOISE (nV/Hz )

1

10 100

FREQUENCY (Hz)

(Typ. )

1000 10000

KIRDB0074EC

■ Measurement circuit

CHOPPER

1200 Hz

BLACK BODY

500 K

DETECTOR

BAND-PASS

FILTER

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

r.m.s.

METER

KIRDC0007EA

2

2

MCT photoconductive detector

■ Dimensional outlines (unit: mm)

➀ P2748-40/-42, P5274 series

LN2 FILL PORT 12.5

51 ± 1

46 ± 143 ± 1

32 ± 1

P2748/P5274 series, P3257-50

63.5 ± 1

28.5

PUMP-OUT PIPE 9.5

PHOTOSENSITIVE
SURFACE

8.5 ± 0.5

➁ P2748-41

PHOTOSENSITIVE
SURFACE

37 ± 1

LN2 FILL PORT 12.5

46 ± 1

32 ± 16.5

6.5

70 ± 2

72 ± 1

95 ± 2

95 ± 1

102 ± 2

SIGNAL
OUTPUT LEAD

102 ± 1

172 ± 2

66.8 ± 1

10 ± 1

DETECTOR
NC
DETECTOR

KIRDA0131EC

66 MAX.

63.5 ± 1

28.5

PUMP-OUT
PORT 9.5

OUTPUT
PIN

172 ± 2

8.5 ± 0.5

51.2 ± 1

7.9 ± 1

DETECTOR
NC
DETECTOR

KIRDA0129EA

3

MCT photoconductive detector

R

➂ P3257-50

PUMP-OUT VALVE 10 MAX.

12.8

P2748/P5274 series, P3257-50

26.7

27.4 MAX.

50.1 MAX.

23.8

10.6 MAX.

29.0 MAX.

+0

-0.01

22

12.7

FOV

(2 ×) 56UNC-2B DEPTH: 5.5 4PL
MOUNTING HOLE

PHOTOSENSITIVE
SURFACE

56.0 ± 0.3

50.8 ± 0.1

28.3 MAX.

38.9 MAX.

OUTPUT PIN

MOUNT SIDE

58 36.4

43

(4 ×) 2.5

25.9 26.8

34.8 MAX. 39.4

14.5 MAX.

50.3 MAX.

81.1 MAX.

20.1 MAX.

Board thickness including

mounted components: 20 MAX.

70.0

76.5

KI

KIRDA0130EA

Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.

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

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