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H7421 View Datasheet(PDF) - Hamamatsu Photonics

Part NameDescriptionManufacturer
H7421 Photon Counting Head Hamamatsu
Hamamatsu Photonics Hamamatsu
H7421 Datasheet PDF : 4 Pages
1 2 3 4
Photon Counting Heads
Characteristics (Count sensitivity, Dark count)
106 TPHOB0042ED
H7421-40
H7421-50
TPHOB0046EB
1000
105
H7421-50 (when used
with C8137, A7423)
100
H7421-40 (when used wih C8137, A7423)
104
103
102
300 400 500 600 700 800 900 1000
WAVELENGTH (nm)
Block Diagram
POWER INPUT for
THERMOELECTRIC
COOLER
THERMISTOR
10
5
10
15
20
25
30
35
40
45
AMBIENT TEMPERATURE (°C)
THERMO-
ELECTRIC
COOLER
PMT
HV POWER SUPPLY
VOLTAGE DIVIDER
CIRCUIT
AMP
COMPARATOR
+
LLD.
PULSE
SHAPER
OUTPUT
TO
PULSE COUNTER
POSITIVE
LOGIC
RL = 50
GND
+5 V
Dimensional Outlines (Unit: mm)
POWER INPUT
8-M3 DEPTH: 2 TAJIMI PRC03-23A10-7M
TPHOC0042ED
ACROSS SECTION
WINDOW
PHOTOCATHODE
5
PMT
O-RING GROOVE
(S-28 O-RING INCLUDED)
4-M2 DEPTH: 2 4-M3B
9.5 ± 0.1
44.0 ± 0.2
56.0 ± 0.3
FRONT VIEW
M25.4 P = 1/32"
C-MOUNT
25.4 ± 0.2
53.6 ± 0.2
TOP VIEW
SIGNAL OUTPUT
BNC-R
PHOTOCATHODE 5
8-M3C A
4.0 ± 0.1
6.4 ± 0.2
7.4 ± 0.2
14.8 ± 0.2
16.3 ± 0.2
BCROSS SECTION CCROSS SECTION
16.3 ± 0.2
19.0 ± 0.2 25.0 ± 0.2
104 ± 1
SIDE VIEW
2.0
6.5 ± 0.2
M3
± 0.2
DEPTH: 4.0 Max.
M3
DEPTH: 4.0 Max.
GUIDE MARK
FA
EG B
DC
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)
TAJIMI PRC03-23A10-7M
TPHOA0021EC
41
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