R1878 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – PHOTOMULTIPLIER TUBE

PHOTOMULTIPLIER TUBE
R1878
For Photon Counting Applications
Excellent Transit Time Spread, Low After Pulse
19mm (3/4 Inch) Diameter, Multialkali Photocathode, 10-Stage, Head-on Type
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
Material
Minimum Effective Area
Window Material
Dynode
Structure
Number of Stages
Base
Suitable Socket
Description/Value
300 to 850
420
Multialkali
4
Borosilicate glass
Linear focused
10
12-pin glass base
E678-12D (supplied)
Unit
nm
nm
—
mm dia.
—
—
—
—
—
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Value
Unit
Supply Voltage
Average Anode Current
Ambient Temperature
Between Anode and Cathode
Between Anode and Last Dynode
1500
Vdc
250
Vdc
0.1
mA
-80 to +50
°C
CHARACTERISTICS (at 25°C)
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Counts
Time Response
Parameter
Luminous (2856K)
Radiant at 420nm
Red/White Ratio (with R-68 filter)
Luminous (2856K)
Radiant at 420nm
Anode Pulse Rise Time
Electron Transit Time
Min.
80
—
—
30
—
—
—
—
—
Typ.
120
51
0.2
150
6.1 × 10⁴
1.2 × 10⁶
100
1.7
24
Max.
—
—
—
—
—
—
250
—
—
Unit
µA/lm
mA/W
—
A/lm
A/W
—
cps
ns
ns
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P
Ratio
2
1
1
1
1
1
1
1
1
1
1
Supply Voltage: 1000Vdc, K: Cathode, Dy: Dynode, P: Anode
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 HAMAMATS U 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. _© 1999 Hamamatsu Photonics K.K.