HAMAMATSU H7546B Datasheet

8 mm × 8 mm Multianode, High Speed Response, Low Cross-talk

30 mm Square, Bialkali Photocathode, 12-stage, Head-on Type

GENERAL

Parameter Description / Value Unit

Spectral Response
Wavelength of Maximum Response

Photocathode

Window Material

Dynode

Anode Size
Weight
Suitable Socket (Supplied)
Operating Ambient Temperature
Storage Temperature

Material
Minimum Effective Area

Structure
Number of Stages

MULTIANODE
PHOTOMULTIPLIER TUBE ASSEMBLY

H7546B

300 to 650

420

Bialkali

18.1 × 18.1

Borosilicate glass

Metal channel dynode

12

2 × 2

Approx. 60

SD-108-T-22, SS-101-T-22, ASP-24307-02

-30 to +50

-30 to +50

nm
nm

—

mm

—
—
—

mm

g

—

°C
°C

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter Description / Value Unit

Supply Voltage Between Anode and Cathode
Average Anode Output Current in Total

CHARACTERISTICS (at 25 °C)

Parameter Unit

Cathode Sensitivity

Quantum Efficiency at 390 nm
Anode Sensitivity
Gain
Anode Dark Current per Channel (after 30 min storage in darkness)
Anode Dark Current in Total (after 30 min storage in darkness)
Time Response
(per channel)
Pulse Linearity per Channel (±5 % deviation)
Cross-talk (with 1 mm optical fiber)
Uniformity Among All Anodes

NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.

Luminous (2856 K)
Blue Sensitivity Index (CS 5-58)

Luminous (2856 K)

Anode Pulse Rise Time
Transit Time Spread (FWHM)

Min. Tye.

60

6.5

—

—
—
—
—
—
—
—
—

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes
Ratio

Supply Voltage: -800 V, K: Cathode, Dy: Dynode, P: Anode

K Dy3

Dy13Dy2 Dy4

2

2

Dy5

1

1

...

Dy9

Dy10 Dy111Dy121P

...

1

1

-1000
23

Value

Max.

80

8.5
21

8

2

3.0 × 10

5

24

5

0.2
12

1.0

0.3

0.6

2

1: 3

—
—
—
—
—

2

60

—
—
—
—

1: 5

V

µA

µA/lm

—

%

A/lm

—

nA
nA

ns
ns

mA

%

—

Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.

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.

MULTIANODE PHOTOMULTIPLIER TUBE ASSEMBLY H7546B

Figure 1: Typical Spectral Response

TPMHB0266EA

100

10

QUANTUM
EFFICIENCY

1

QUANTUM EFFICIENCY (%)

0.1

CATHODE RADIANT SENSITIVITY (mA/W)

0.01
100 200 300 400 500 600 700 800 900

WAVELENGTH (nm)

CATHODE
RADIANT
SENSITIVITY

Figure 2: Typical Gain and Dark Current

TPMHB0439EA

7

10

6

10

GAIN

5

10

GAIN

4

10

3

10

2

10

1

10

500 700

DARK CURRENT
per CHANNEL

800 900 1000600

SUPPLY VOLTAGE (V)

-6

10

-7

10

-8

10

-9

10

DARK CURRENT (A)

-10

10

-11

10

-12

10

Figure 3: Typical Time Response

TPMHB0438EB

2 (mV/div.)

SUPPLY VOLTAGE = -800 V
RISE TIME = 1480 ps
FALL TIME = 3265 ps
WIDTH = 3120 ps
* 4 ANODES at CENTER

2 (ns/div.)

Figure 4: Single Photoelectron PHD per Channel (Example)

TPMHB0437EB

1000

m=220 [ch]

500

COUNTS / CHANNEL

DARK= =39 s

0

0

0.3m

SUPPLY VOLTAGE = -900 V
WAVELENGTH = 400 nm
TEMPERATURE = 25 °C
PHOTON COUNT = 5563 s
DARK COUNT = 39 s

PHOTON+DARK= =5602 s

3m

-1

Σ

0.3m

3m

0.3m

-1

-1

-1

Σ

m2m3m

PULSE HEIGHT (ch)