R446 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – PHOTOMULTIPLIER TUBE

PHOTOMULTIPLIER TUBE
R446
Multialkali Photocathode Sensitive to 870 nm
28 mm (1-1/8 Inch) Diameter, 9-Stage, Side-On Type
The R446 features high quantum efficiency, high current
amplification, good S/N ratio and wide spectral response
from UV to near infrared. The R446 employs a UV-trans-
mitting glass envelope for UV sensitivity extension.
The R446 is well suited for use in broad-band spectro-
photometers, atomic absorption spectrophotometers,
chromatographs, NOx analyzers and other precision pho-
tometric instruments.
FEATURES
GWide Spectral Response ......................... 185 nm to 870 nm
GCathode Sensitivity
Luminous ......................................................... 120 µA/lm
Radiant at 330 nm ............................................. 44 mA/W
GAnode Sensitivity (at 1000 V)
Luminous ........................................................... 600 A/lm
Radiant at 330 nm ...................................... 2.2 × 10⁵ A/W
GLow Drift and Hysteresis
SPECIFICATIONS
GENERAL
Parameter
Description/Value
Unit
Spectral Response
185 to 870
nm
Wavelength of Maximum Response
330
nm
Photocathode
MateriaI
Minimum Effective Area
Multialkali
8 × 24
—
mm
Window Material
UV glass
—
Secondary Emitting Surface
Multialkali
—
Dynode
Structure
Circular-cage
—
Number of Stages
9
—
Direct Interelectrode Anode to Last Dynode
4
pF
Capacitances
Anode to All Other Electrodes
6
pF
Base
11-pin base JEDEC No. B11-88 —
Weight
Approx. 45
g
Operating Ambient Temperature
Storage Temperature
-30 to +50
°C
-30 to +50
°C
SuitabIe Socket
E678–11A (Sold Separately) —
SuitabIe Socket Assembly
E717–63 (Sold Separately)
E717–74 (Sold Separately)
—
Figure 1: Typical Spectral Response
TPMSB0090EB
100
CATHODE RADIANT
SENSITIVITY
10
1
QUANTUM
EFFICIENCY
0.1
0.01
100 200 300 400 500 600 700 800 900 1000
WAVELENGTH (nm)
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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. ©2006 Hamamatsu Photonics K.K.