Datasheet

Compact Head-on PMT
Photon Counting Head H7828 Series
The H7828 series is a photon counting head device containing a 19-mm (3/4")
diameter head-on photomultiplier tube, a high-speed photon counting circuit,
and a high-voltage power supply circuit. The high voltage supply for photomultiplier tube and the discrimination level are preset to optimum values, allowing
photon counting measurement by just connecting a +5 V supply. Despite its
compact size, the effective photosensitive area is as large as 15 mm in diameter, so the incident light can be collected very efficiently. Compared to other
PMT modules, the H7828 series has higher resistance to vibration and shock,
making them suitable for portable or mobile measurement equipment.
Product Variations
Type No.
H7828
H7828-01
Spectral Response
300 nm to 650 nm
300 nm to 850 nm
Features
For visible range
For visible to near IR range
This product can't be used at vacuum environment or reduced pressure environment.
Specifications
Parameter
Input Voltage
Max. Input Voltage
Max. Input Current
Effective Area
Peak Sensitivity Wavelength
300 nm
400 nm
Count
Typ.
500 nm
Sensitivity
600 nm
700 nm
Count Linearity *1
Typ.
Dark Count *2
Max.
Pulse-pair Resolution
Output Pulse Width
Min.
Output Pulse Height *3
Typ.
Recommended Load Resistance
Signal Output Logic
Operating Ambient Temperature *4
Storage Temperature *4
Weight
(at +25 °C)
H7828
H7828-01
+4.5 to +5.5
+6
60
15
380
1.7 × 105
2.1 × 105
1.6 × 105
1.0 × 105
5.9 × 104
420
2.1 × 105
3.6 × 105
2.8 × 105
5.0 × 104
—
1.5 × 106
200
500
*1: Random pulse, at 10 % count loss
*2: After 30 minutes storage in darkness
*3: With input voltage +5 V, Load resistance 50 Ω and Coaxial cable RG-174/U (450 mm)
*4: No condensation
58
s-1·pW-1
s-1
2000
3500
70
30
3.0
3.5
50
Positive logic
+5 to +40
-20 to +50
70
Unit
V
V
mA
mm
nm
s-1
ns
ns
V
Ω
—
°C
°C
g
Photon Counting Heads
Characteristics (Count sensitivity, Dark count)
106
TPHOB0051EA
105
TPHOB0052EA
COUNT SENSITIVITY (s-1. pW-1)
104
H7828-01
H7828-01
DARK COUNT (s-1)
105
H7828
104
103
102
H7828
101
103
200
300
400
500
600
700
800
100
900
5
10
15
20
25
30
35
40
AMBIENT TEMPERATURE (°C)
WAVELENGTH (nm)
Block Diagram
PMT
AMP
COMPARATOR
+
PULSE
SHAPER
OUTPUT
TO
PULSE COUNTER
LLD
HV POWER SUPPLY /
VOLTAGE DIVIDER
CIRCUIT
POSITIVE
LOGIC
GND
RL
50 Ω
+5 V
POWER INPUT
TPHOC0035EE
Dimensional Outlines (Unit: mm)
EFFECTIVE PHOTOCATHODE
( 15 MIN.)
18.6 ± 0.7
18
14.0 ± 0.5
50.0 +1.0
-0
THREADED HOLE for OPTION
(4-M2 DEPTH: 5)
FRONT VIEW
56.0 +0.5
-0
10.0 ± 0.5
SIGNAL OUTPUT
BNC-R
19.0 ± 0.5 18.0 ± 0.5
0 +0.1
-0.3
18
25.0 ± 0.5
26.0 +0.5
-0
16.0 ± 0.5
POWER INPUT CONNECTOR
HIROSE HR10A-7R-6P
1: LOW VOLTAGE INPUT (+5 V)
2: GND
3: IC*
4: IC*
5: NC
6: NC
MOUNTING THREADED HOLE
(2-M3 DEPTH: 5)
SIDE VIEW
* Internal Connection (Do not use)
REAR VIEW
Power cable with connector (HIROSE HR10A-7P-6S) is supplied with H7828 series
700
BLACK : GND
RED : LOW VOLTAGE INPUT (+5 V)
WHITE : NC
BULE : NC
GREEN: NC
TPHOA0028ED
59
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