H7421 datasheet(2/4 Pages) HAMAMATSU

2 / 4 page

Characteristics (Count sensitivity, Dark count)

Block Diagram

Dimensional Outlines (Unit: mm)

TPHOB0042ED

TPHOB0046EB

TPHOC0042ED

TPHOA0021EC

106

105

104

103

102

300

400

500

600

WAVELENGTH (nm)

700

800

900

1000

H7421-50

H7421-40

510

100

1000

AMBIENT TEMPERATURE (

°C)

H7421-50 (when used

with C8137, A7423)

H7421-40 (when used wih C8137, A7423)

Photon Counting Heads

4.0

± 0.1

6.4

± 0.2

7.4

± 0.2

14.8

± 0.2

16.3

± 0.2

PHOTOCATHODE

WINDOW

PMT

ACROSS SECTION

BCROSS SECTION

CCROSS SECTION

2.0

± 0.2

DEPTH: 4.0 Max.

6.5

± 0.2

DEPTH: 4.0 Max.

9.5

± 0.1

44.0

± 0.2

56.0

± 0.3

16.3

± 0.2

19.0

± 0.2 25.0 ± 0.2

104

± 1

53.6

± 0.2

25.4

± 0.2

M25.4 P = 1/32"

C-MOUNT

4-M3B

4-M2 DEPTH: 2

O-RING GROOVE

(S-28 O-RING INCLUDED)

8-M3CA

PHOTOCATHODE

8-M3 DEPTH: 2

POWER INPUT

TAJIMI PRC03-23A10-7M

SIGNAL OUTPUT

BNC-R

TOP VIEW

SIDE VIEW

FRONT VIEW

GUIDE MARK

TAJIMI PRC03-23A10-7M

A: THERMISTOR 1

B: THERMISTOR 2

C: THERMOELECTRIC COOLER +

D: THERMOELECTRIC COOLER –

E: Vcc LOW VOLTAGE

INPUT(+5 V)

F: IC*

G: GND

*IC: Internal Connection (Do not use)

POWER INPUT for

THERMOELECTRIC

COOLER

THERMISTOR

COMPARATOR

LLD.

+5 V

HV POWER SUPPLY

VOLTAGE DIVIDER

CIRCUIT

PMT

GND

–

PULSE

SHAPER

OUTPUT

PULSE COUNTER

RL = 50

Ω

POSITIVE

LOGIC

AMP

THERMO-

ELECTRIC

COOLER

H7421 Datasheet(PDF) 2 Page - Hamamatsu Corporation

H7421 Datasheet(HTML) 2 Page - Hamamatsu Corporation

Html Pages

1 2 3 4

Datasheet Download

Link URL