Product Information
PI
TOSHIBA X-RAY TUBE
DF-151
DF-151R
DF-151S
DF-151SB
DF-151SR
DF-151SBR
Stationary Anode X-ray Tube

Especially designed for mobile type surgical
X-ray TV apparatus.

Provided with an insulation cylinder (DF-151S /
DF-151SR) and lead cylinder. (DF-151SB /
DF-151SBR).

These tubes have focus 1.5 and 0.5 foci and are
available for maximum tube voltage 110 kV.

Installed in the same enclosure with the high
voltage transformer.
General Data
Electrical:
Circuit:
High Voltage Generator ............................................ Constant Potential High-Voltage Generator
Grounding ......................................................................................................... Center-Grounded
Nominal X-ray Tube Voltage ................................................................................................... 110 kV
Nominal Focal Spot Value:
Large Focus ............................................................................................................................. 1.5
Small Focus ............................................................................................................................. 0.5
Nominal Anode Input Power (at 1.0s):
Large Focus ...................................................................................................................... 3200 W
Small Focus ........................................................................................................................ 680 W
Exposure Duty Cycle:
Large Focus ........................................................................................................................... 1:40
Small Focus ........................................................................................................................... 1:20
(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 .................................................................................. 430 × 430 mm at SID 909 mm
★The information contained herein is presented only as a guide for the applications of our products.
No Responsibility is assumed by TOSHIBA ELECTRON TUBES & DEVICES CO.,LTD.(TETD) 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 TETD or others.
★The information contained herein may be changed without prior notice. It is therefore advisable to contact TETD before proceeding with the design of
equipment incorporating this product.
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Weight:
DF-151 ................................................................................................................... Approx. 430 g
DF-151R ................................................................................................................ Approx. 550 g
DF-151S ................................................................................................................. Approx. 550 g
DF-151SB .............................................................................................................. Approx.1100 g
DF-151SR .............................................................................................................. Approx. 680 g
DF-151SBR ............................................................................................................ Approx.1250 g
Cooling Method .............................................. Oil immersed (60℃ Max.) and convection oil cooling.
Tube Holding:
DF-151 / DF-151R ..................... Holding the glass envelope of the anode end and cathode end,
or the screw of the anode shank.
DF-151S / DF-151SB / DF-151SR / DF-151SBR .......................... Holding the insulation cylinder.
Absolute Maximum and Minimum Ratings
(At any time, these values must not be exceeded.)
Maximum X-ray Tube Voltage ................................................................................................ 110 kV
Between Anode (or Cathode) and Ground ................................................................................ 55 kV
Minimum X-ray Tube Voltage ................................................................................................... 40 kV
Maximum X-ray Tube Current:
Large Focus ........................................................................................................................ 60 mA
Small Focus ........................................................................................................................ 15 mA
Maximum Filament Current:
Large Focus .......................................................................................................................... 4.3 A
Small Focus .......................................................................................................................... 3.1 A
Filament Voltage (At Maximum Filament Current):
Large Focus ................................................................................................................. 5.0 ~ 6.4 V
Small Focus ................................................................................................................. 3.5 ~ 4.9 V
Filament Frequency Limits ........................................................... DC or AC (Sine Wave) 0 ~ 20 kHz
Thermal Characteristics:
Anode Heat Content:
DF-151 / DF-151S / DF-151SB ....................................................................................... 28 kJ
DF-151R / DF-151SR / DF-151SBR ............................................................................ 35.5 kJ
Maximum Anode Heat Dissipation Rate:
DF-151/DF-151S / DF-151SB ........................................................................................ 265 W
DF-151R / DF-151SR / DF-151SBR .............................................................................. 600 W
Maximum Radiographic Exposure Time ········································································ 10 s
Maximum Fluoroscopic Duration:
DF-151R / DF-151SR / DF-151SBR .............................................................. 600 W - 20 minutes
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-
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Maximum Rating Charts
(Absolute maximum rating charts)
Constant Potential High-Voltage Generator
Nominal Focal Spot Value: 1.5
40kV
50kV
60
60kV
TUBE CURRENT [mA]
50
70kV
80kV
40
30
90kV
100kV
110kV
20
10
0
0.1
0.2
0.3
0.5 0.7
1
2
3
5
7
10
7
10
EXPOSURE TIME [s]
Nominal Focal Spot Value: 0.5
40kV
15
50kV
TUBE CURRENT [mA]
60kV
10
70kV
80kV
90kV
100kV
110kV
5
0
0.1
0.2
0.3
0.5 0.7
1
2
EXPOSURE TIME [s]
-3-
3
5
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Emission & Filament Characteristics
Constant Potential High-Voltage Generator
Nominal Focal Spot Value: 1.5
6.5
60
40kV
TUBE CURRENT [mA]
80kV
40
5.5
110kV
5
30
Ef
20
4.5
10
4
0
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
FILAMENT VOLTAGE [V]
6
50
3.5
4.3
FILAMENT CURRENT [A]
Note: This graph indicates typical characteristics.
Nominal Focal Spot Value: 0.5
15
5
80kV
10
Ef
4
110kV
5
3
0
2.4
2.5
2.6
2.7
2.8
2.9
3.0
2
3.1
FILAMENT CURRENT [A]
Note: This graph indicates typical characteristics.
-4-
FILAMENT VOLTAGE [V]
TUBE CURRENT [mA]
40kV
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Anode Heating / Cooling Curve
DF-151 / DF-151S / DF-151SB
28
265W
HEAT STORAGE [kJ]
25
20
150W
15
10
COOLING
5
HEATING
0
0
3
6
9
12
15
TIME [min]
DF-151R / DF-151SR / DF-151SBR
40
COOLING
HEAT STORAGE [kJ]
35
600W
30
25
300W
20
15
10
100W
5
HEATING
0
0
60
120
180
240
300
360
TIME [s]
-5-
420
480
540
600
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151
Unit: mm
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ１６
１３９±５
６５±０．５
５
Ｍ５　１０ＤＥＥＰ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ５２ｍａｘ．
Ｌ
Ｋ
１６ｍａｘ．
ＦＯＣＡＬ　ＳＰＯＴ
）
．３
１７
φ
（
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
-6-
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151R
Unit: mm
４
４
φ
－
．
１
±
０
．
０
５
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
８
２
φ
０
±
１
．
φ４０
Ｍ５　１０ＤＥＥＰ
２６
１６０±５
８６±０．５
２１
７
ＲＡＤＩＡＴＯＲ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ５２ｍａｘ．
１６ｍａｘ．
ＦＯＣＡＬ　ＳＰＯＴ
Ｌ
Ｋ
）
．３
１７
φ
（
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
-7-
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151S
Unit: mm
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ１６
Ｍ５　１０ＤＥＥＰ
１４５±３
６５±０．５
φ２２
６０
ＩＮＳＵＬＡＴＩＯＮ　ＣＹＬＩＮＤＥＲ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
１０ｍａｘ．
８０
ＦＯＣＡＬ　ＳＰＯＴ
φ６０
Ｌ
Ｋ
）
．３
１７
（φ
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
-8-
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151SB
Unit: mm
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ１６
Ｍ５　１０ＤＥＥＰ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
７０
ＦＯＣＡＬ　ＳＰＯＴ
ＬＥＡＤ　ＣＹＬＩＮＤＥＲ
φ６０
１０ｍａｘ．
８０
１４５±３
６５±０．５
φ２５
φ２２
５０
６０
ＩＮＳＵＬＡＴＩＯＮ　ＣＹＬＩＮＤＥＲ
φ６４
Ｌ
Ｋ
１
（φ
７．
３）
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
-9-
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151SR
４
－
φ
４
．
１
±
０
．
０
５
Unit: mm
φ
２
８
±
０
．
１
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ４０
Ｍ５　１０ＤＥＥＰ
１６６±３
φ２２
６０
８６±０．５
ＩＮＳＵＬＡＴＩＯＮ　ＣＹＬＩＮＤＥＲ
２６
２１
７
ＲＡＤＩＡＴＯＲ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
１０ｍａｘ．
８０
ＦＯＣＡＬ　ＳＰＯＴ
φ６０
Ｌ
）
．３
１７
（φ
Ｋ
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
- 10 -
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
Dimensional Outline of DF-151SBR
Unit: mm
４
－
４
φ
．
１
±
０
．
０
５
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
φ
２
８
０
±
１
．
φ４０
Ｍ５　１０ＤＥＥＰ
７０
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＦＯＣＡＬ　ＳＰＯＴ
ＬＥＡＤ　ＣＹＬＩＮＤＥＲ
φ６０
１０ｍａｘ．
８０
１６６±３
φ２５
φ２２
５０
６０
８６±０．５
ＩＮＳＵＬＡＴＩＯＮ　ＣＹＬＩＮＤＥＲ
２６
２１
７
ＲＡＤＩＡＴＯＲ
φ６４
Ｌ
Ｋ
１７
（φ
）
．３
Ｃ
ＣＥＮＴＲＡＬ　Ｘ－ＲＡＹ
ＳＨＯＲＴ　ＰＩＮ
Ｎ
Ｓ
- 11 -
Ｌ：ＬＡＲＧＥ　ＦＯＣＵＳ
Ｓ：ＳＭＡＬＬ　ＦＯＣＵＳ
Ｃ：ＣＯＭＭＯＮ
Ｋ：ＣＡＴＨＯＤＥ
Ｎ：ＮＯＴ　ＦＯＲ　ＵＳＥ
DF-151/DF-151R/DF-151S/DF-151SB/DF-151SR/DF-151SBR
OVERSEAS SUBSIDIARIES AND AFFILIATES
EU REPRESENTATIVE
・TOSHIBA ELECTRONICS EUROPE GMBH
HANSAALLEE 181 40549 DÜSSELDORF, GERMANY
PHONE +49 (211) 5296-107
FAX +49 (211) 5296-402
For Sales & Technical Services, please contact the following representative:
・TOSHIBA ELECTRONICS EUROPE GMBH
HANSAALLEE 181 40549 DÜSSELDORF, GERMANY
PHONE +49 (211) 5296-107
FAX +49 (211) 5296-402
・TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
2150 EAST LAKE COOK ROAD, SUITE 310
BUFFALO GROVE, ILLINOIS 60089 USA
PHONE +1 (847) 484-2400
FAX +1 (847) 541-7287
・TOSHIBA ELECTRON DEVICES & MATERIALS (SHANGHAI) CO., LTD. (TEMS)
RM1606, SH-PLAZA,
No.336, XIZANG ROAD (MIDDLE), SHANGHAI, 200001, CHINA
PHONE +86 (21) 6361-0077
FAX +86 (21) 6351-5760
(Product Development Engineering Department)
1385 SHIMOISHIGAMI, OTAWARA-SHI, TOCHIGI-KEN, 324-8550, JAPAN
PHONE: +81-287-26-6666
FAX: +81-287-26-6060
http://www.toshiba-tetd.co.jp/
･Toshiba Electron Tubes & Devices Co., Ltd. meets the Environmental Management System Standard, ISO14001.
･Toshiba Electron Tubes & Devices Co., Ltd. meets internationally recognized Standards for Quality Management System ISO9001, ISO13485.