Product Information

PIX-RAY TUBE
D-125
D-125S
D-125SB
Stationary Anode X-ray Tube


Especially designed for dental X-ray unit.

Provided with on insulation cylinder (D-125S)
and lead cylinder (D-125SB).

These tubes have focus 1.2, and are available
for maximum tube voltage 100 kV or 125 kV.

Installed in the same enclosure with the highvoltage transformer.

General Data
Electrical:
Circuit:High Voltage Generator ............................................ Constant Potential High-Voltage Generator
Grounding ......................................................................................................... Center-Grounded
Nominal X-ray Tube Voltage:
D-125 ................................................................................................................................. 125 kV
D-125S, D-125SB .............................................................................................................. 100 kV
Nominal Focal Spot Value ............................................................................................................ 1.2
Nominal Anode Input Power (at 1.0s) (See rating charts) ....................................................... 2700 W
Nominal Radiographic Anode Input Power ............................................................................ 2900 W
Exposure Duty Cycle ..................................................................................................... 1:60 or more
(Exposure Time : Interval Time)

Mechanical:
Dimensions:Overall Length ......................................................................................... See dimensional outline
Maximum Diameter ................................................................................. See dimensional outline
Target:Anode Angle ............................................................................................................... 16 degrees
Material .......................................................................................................................... Tungsten
Inherent Filtration .................................................................................... At least 0.8 mm Al at 50 kV
X-ray Coverage .................................................................................. 354 × 354 mm at SID 750 mm★The information contained herein is presented only as a guide for the application of our products. No responsibility is assumed by Canon Electron Tubes& Devices Co., Ltd. (CETD) for any infringements of patents or other rights of the third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of CETD or others.
★The information contained herein may be changed without prior notice. It is therefore, advisable to contact to CETD before processing with the design ofequipment incorporating this product.

D-125 / D-125S / D-125SB

Weight (approx.):D-125 ................................................................................................................................... 350 g
D-125S ................................................................................................................................. 430 g
D-125SB .............................................................................................................................. 780 g
Cooling Method .............................................. Oil immersed (60℃ Max.) and convection oil cooling.
Tube Holding:D-125 ...................................... Holding the glass envelope of the anode end and cathode end,or the screw of the anode shank.
D-125S .......................................................................................... Holding the insulation cylinder.
D-125SB ....................................................... Holding the Insulation cylinder or the lead cylinder.

Absolute Maximum and Minimum Ratings(At any time, these values must not be exceeded.)Maximum X-ray Tube Voltage:
D-125 ................................................................................................................................. 125 kV
D-125S, D-125SB .............................................................................................................. 100 kV
Between Anode (or Cathode) and Ground:
D-125 ................................................................................................................................ 62.5 kV
D-125S, D-125SB ................................................................................................................ 50 kV
Minimum X-ray Tube Voltage ................................................................................................... 40 kV
Maximum X-ray Tube Current .................................................................................................. 40 mA
Maximum Filament Current ........................................................................................................ 3.1 A
Filament Voltage:
At maximum filament current (3.1A) ............................................................................. 2.7 ~ 3.6 V
Filament Frequency Limits ........................................................... DC or AC (Sine Wave) 0 ~ 20 kHz
Thermal Characteristics:
Anode Heat Content ............................................................................................................ 35 kJ
Maximum Anode Heat Dissipation ...................................................................................... 250 W
Maximum Radiographic Exposure Time ..................................................................................... 10 s

Environmental Limits
Operating Limits (in dielectric oil):
Oil Temperature ............................................................................................................ 10 ~ 60℃
Oil pressure .............................................................................................................. 70 ~ 140 kPa
Shipping and Storage Limits:
Temperature ................................................................................................................ -40 ~ 70℃
Humidity ........................................................................................................................ 10 ~ 90 %(No condensation)
Atmospheric Pressure .............................................................................................. 50 ~ 106 kPa-2-

D-125 / D-125S / D-125SB

Maximum Rating Charts(Absolute maximum rating charts)
Constant Potential High-Voltage Generator
Nominal Focal Spot Value:1.260kV4080kVTUBE CURRENT [mA]

40kV
100kV

30125kV
20Only D-125

1000.1

0.20.310.5 0.7235710EXPOSURE TIME [s]Emission & Filament Characteristics
Constant Potential High-Voltage Generator
405.0

TUBE CURRENT [mA]

100kV
30

4.0125kV(Only D-125)

20

3.0
Ef

100
2.2

2.0

40kV

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

FILAMENT CURRENT [A]This graph indicates typical characteristics.
-3-3.1

1.0

FILAMENT VOLTAGE [V]60kV

D-125 / D-125S / D-125SB

Anode Heating / Cooling Curve35315W
225W

HEAT STORAGE [kJ]30175W

25201510COOLING5HEATING
00246

TIME [min]-4-810D-125 / D-125S / D-125SB

Dimensional Outline of D-125
Unit: mm

φ１５．７

１６°

１３８±５７３±２８

Ｍ６ ８ＤＥＥＰＣＥＮＴＲＡＬ Ｘ－ＲＡＹ

φ４５ＭＡＸ

１４ＭＡＸ

ＦＯＣＡＬ ＳＰＯＴ

Ｃ２Ｆ

５０．
φ２

ＣＥＮＴＲＡＬ Ｘ－ＲＡＹ

ＮＣ１Ｆ

ＳＨＯＲＴ ＰＩＮ
Ｆ：ＦＩＬＡＭＥＮＴ
Ｃ１，Ｃ２：ＣＡＴＨＯＤＥ
Ｎ-5-：ＮＯＴ ＦＯＲ ＵＳＥ

D-125 / D-125S / D-125SB

Dimensional Outline of D-125S
Unit: mm

φ１５．７

Ｍ６ ８ＤＥＥＰ

φ２５７３±２

Ｉｎｓｕｒａｔｉｏｎ ｃｙｌｉｎｄｅｒ

１４６±２１６°

ＣＥＮＴＲＡＬ Ｘ－ＲＡＹ

６ＭＡＸ

ＦＯＣＡＬ ＳＰＯＴ

φ５４５０．
２φＣ２Ｆ
ＣＥＮＴＲＡＬ Ｘ－ＲＡＹ

ＮＣ１Ｆ
ＳＨＯＲＴ ＰＩＮ
Ｆ：ＦＩＬＡＭＥＮＴ
Ｃ１，Ｃ２：ＣＡＴＨＯＤＥ
Ｎ-6-：ＮＯＴ ＦＯＲ ＵＳＥ

D-125 / D-125S / D-125SB

Dimensional Outline of D-125SB
Unit: mm
φ５８φ５４Ｍ６ ８ ＤＥＥＰ

φ１５．７

φ３０４０

φ２５７３±１

Ｉｎｓｕｌａｔｉｏｎ ｃｙｌｉｎｄｅｒ

１４６±３

１４３１６°ＣＥＮＴＲＡＬ Ｘ－ＲＡＹ

６５ＦＯＣＡＬ ＳＰＯＴ

６ＭＡＸ

Ｌｅａｄ ｃｙｌｉｎｄｅｒ

φ２Ｃ２５０．

Ｆ
ＣＥＮＴＲＡＬ Ｘ－ＲＡＹＮ
Ｃ１Ｆ

ＳＨＯＲＴ ＰＩＮ
Ｆ：ＦＩＬＡＭＥＮＴ
Ｃ１、Ｃ２：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ ＵＳＥ

-7-Marketing Engineering Group, Sales Department
1385, Shimoishigami, Otawara-shi, Tochigi 324-8550, Japan
Tel: +81-287-26-6666
Fax: +81-287-26-6060
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･Canon Electron Tubes & Devices Co., Ltd. has been certified to meet all the requirements of Quality Management Systems ISO9001 and ISO13485.
Product scope is referred to the following URL. https://etd.canon/eng/company/quality.htm.

PE-D-125/S/SB 2018-11