29 mm (1.13") photomultiplier
9900B series data sheet
6 characteristics
1 description
unit

The 9900B is a 29 mm (1.13”) diameter, end window
photomultiplier with sidewall sensitivity for wide angle lightdetection. It has an enhanced-green sensitive bialkali
photocathode and 11 high gain, high stability, SbCs dynodesof box and grid design.

photocathode: bialkali
active diametermm
quantum efficiency at peak%luminous sensitivityµA/lmwith CB filter
with CR filter
dynodes: 11BGSbCs
anode sensitivity in divider A:
nominal anode sensitivity
A/lmmax. rated anode sensitivity
A/lm
overall V for nominal A/lm
V
overall V for max. rated A/lm
V6gain at nominal A/lm
x 10
dark current at 20 ºC:
dc at nominal A/lmnA
dc at max. rated A/lmnA
-1dark count ratespulsed linearity (-5% deviation):
divider AmA
pulse height resolution:
single electron peak to valley
ratioµA
rate effect ( Ia for ∆g/g=1%):
magnetic field sensitivity:
the field for which the output
decreases by 50 %-4
most sensitive direction
T x 10-1
temperature coefficient:% ºC
timing:single electron rise timenssingle electron (fwhm)
nstransit timensweight:g
maximum ratings:
anode currentµA
cathode current
nA
6gain
x 10
sensitivity
A/lm
temperature°C(1)
V (k-a)VV (k-d1)
V(2)
V (d-d)Vambient pressure (absolute)kPa

2 applications
x-ray & gamma-ray spectroscopy
photon counting of bio- and chemi-luminescent samples

3 features•••••high gain
low operating voltage
good SER
good pulse height resolution
2π active area4 window characteristics
9900B
borosilicate
spectral range *(nm)refractive index (nd)KThU

280 - 680
1.49(ppm)
(ppb)
(ppb)

300
250
100

* wavelength range over which quantum efficiency exceeds 1 % of peak(1)

subject to not exceeding max. rated sensitivity

5 typical spectral response curves7

typmax

25
26
80
11
7.5
200
2000
800
1050
2.5

1100

0.3
3300

50.1
220

2
± 0.5
1530
85
55
100
25
25
2000
60
2000
300
300
202-30(2)

subject to not exceeding max rated V(k-a)

7 typical voltage gain characteristics
10,00020100300

710200100B

1008

10

2,000
1,000

A/ l mquant um ef f i ci ency %30500
wavelength nm

700900610divider A105

10

1
0.1

4

10

0.2

0.4

0.6

0.8

1.0

1.2

Vk-a (kV)

1.4

1.6

1.8

2.0

gai n••min8 voltage divider distribution
kd1 d2

A 150V R

d8

d9 d10 d11RR

R2R

9900B series data sheet
page 211 ordering informationaR

Standard

Characteristics contained in this data sheet refer to divider A
unless stated otherwise.

The 9900B meets the specification given in this data sheet.
You may order variants by adding a suffix to the type
number. You may also order options by adding a suffix tothe type number. You may order product with specification
options by discussing your requirements with us. If yourselection option is for one-off order, then the product will bereferred to as 9900A. For a repeat order, ET Enterprises will
give the product a two digit suffix after the letter B, forexample B21. This identifies your specific requirement.

9 external dimensions mm9900
optionsE28.2 max

electrostatic shielding
see drawing below
electromagnetic shielding
see drawing below
supplied with spectral
response calibration

S20
activeareaM

specification options
BA

112 ± 3

as given in data sheet
single order toselected specification
repeat order toselected specification

Bnn

29 max withelectrostatic
shielding

12.7 max

conductive coating(for E option)

10 base configuration (viewed from below)

d11
d9

d10

786d3

91ic

d6

11 d4

B14B
2

insulating sleeve(for E & S options)103

mumetal* shield(for S option)

d85

d7 4
d5a29.3 max withelectromagnetic
shielding

121413d1d2k*mumetal is a registered trademark of Magnetic Shield Corporation‘ic’ indicates an internal connection

12 voltage dividers
The standard voltage divider available for these pmts istabulated below:

Our range of B14B sockets, available for this series, includes
versions with or without a mounting flange, and versions withcontacts for mounting directly onto printed circuit boards.

kd1

d2

d7

d8

d9

d10 d11 a

C637E

2R

RR

RR

2R R

C637G

150V R

RRR

2R R

R = 330 kΩ

ET Enterprises Limited45 Riverside Way
Uxbridge UB8 2YF
United Kingdom
tel: +44 (0) 1895 200880
fax: +44 (0) 1895 270873
e-mail: sales@et-enterprises.com
web site: www.et-enterprises.com

ADIT Electron Tubes
300 Crane Street
Sweetwater TX 79556 USA
tel: (325) 235 1418
toll free: (800) 399 4557
fax: (325) 235 2872
e-mail: sales@electrontubes.com
web site: www.electrontubes.com

choose accessories for this pmt on our website

an ISO 9001 and ISO 14001 registered company
The company reserves the right to modify these designs and specifications without notice.
Developmental devices are intended for evaluation and no obligation is assumed for future
manufacture. While every effort is made to ensure accuracy of published information thecompany cannot be held responsible for errors or consequences arising therefrom.

© ET Enterprises Ltd, 2014
DS_ 9900B Issue 7 (26/02/14)