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Photomultiplier Tube
Base Comparison Chart
These charts are intended as selection guides only.
For complete and precise specifications, consult the data sheet for
each model.
| Model |
High Voltage (Vmax) |
Bleeder Current (mA) |
PM Output Signals |
Control |
Compatible PMT Type |
Dimensions |
| Anode |
Dynode |
|
265 |
―3000 |
≤2 |
Neg. timing
signal, 0.5 A; max, 50 Ω
dc-coupled |
Pos. Linear
signal
Zo ~1 MΩ; capacitive
coupling |
Voltage adj
for focus and for 2nd and 12th dynodes |
12-stage
PMTs that fit 21-pin sockets, including Hamamatsu R329,
R1332, and R1333. Burle 8575, 8850, 8852, and C31000M. |
7.6-cm
(3-in.) diam, 20.3-cm (8-in.) length |
|
266 |
+2500 |
≤1.67 |
Neg. signals
Zo ~1.1 MΩ;
capacitive coupling |
Pos. signals
Zo ~1.2 MΩ;
capacitive coupling |
External
control for focus voltage |
All 10-stage
PMTs that fit standard 14-pin sockets including Hamamatsu
PM55, R208, R550, R594, R877, R878, R1507, R1512, R1513,
R1612, R1791, R1836, R1847-07, R1848-07, and 7696. Burle
4900, 5819, 6342A, 6655A, S83006E, S83013F, S83019F,
S83020F, S83021E, S83022F, S83025F. Philips XP2202B,
XP2203B, XP2412B. ADIT B51B01, L51B01, V51B01, B51D01,
B51C01, B76B01, V76B01, B76C01, B89B01, B89C01, B89D01,
B133D01, B133C01, V133B01. |
5.6-cm
(2.2-in.) diam, 10.2-cm (4-in.) length |
|
269 |
―3000 |
≤2 |
Neg. timing
signals, 0.5 A; max, 50 Ω
dc-coupled |
Pos. Linear
signal
Zo ~1 MΩ; capacitive
coupling |
Voltage adj
for focus and deflection and for 14th dynode |
14-stage
PMTs that fit standard 20-pin sockets, including Hamamatsu
R1828-01 and R2059. Philips XP2020, XP2020A, XP2040,
XP2040Q, XP2041, XP2041Q, XP2212B, XP2230B, XP2233B,
XP2262B. EMI 9813k. |
7.6-cm
(3-in.) diam, 20.3-cm (8-in.) length |
|
276 |
+2000 |
≤1.67 |
Neg. signals
Zo ~1 kΩ; capacitive
coupling |
Preamp
internally connected to dynode 10; dc-coupled output |
External
control for focus voltage |
Same as 266 |
5.6-cm
(2.2-in.) diam, 10.2-cm (4-in.) length |
|
296 |
+1100 |
Active dynode
voltage regulation |
Neg. signals
Zo ~1 kΩ; capacitive
coupling |
Preamp
internally connected to dynode 10; ac-coupling |
Internal HV
supply adjustable from +600 V to +1100 V. Focus voltage is
1/2 of dynode 1 voltage. |
Same as 266 |
5.6-cm
(2.2-in.) diam, 17-cm (6.7-in.) length |
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