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Feedthroughs & Viewports > Electrical Feedthroughs > Thermocouple Feedthroughs > Type J Thermocouple Feedthroughs

Type J Mil-Spec Plug - KF Flange, Double-Ended

We manufacture these mil-spec (MS) connector Type J thermocouple feedthroughs to transfer a thermocouple’s EMF through a vacuum chamber wall to a device. Rated for high and ultrahigh vacuum applications (depending on mounting termination).

Type J Thermocouple Feedthroughs Feature:

  • Feature positive wires made of iron and negative wires of constanan
  • Temperature range from 0° C to 750° C
  • Include air-side connectors
  • Vacuum-side leads terminate in thermocouple lugs, which include a stainless steel nut and screw to facilitate thermocouple hookup
  • Double-ended assemblies come with air-side and vacuum-side Mil-spec screw-on connectors.

Dimensional Drawings

Got VacuCADSM?
VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table


Figure Flange Size
(in)
Air
Side
Vac
Side
T/C
pairs
Dim
A
Dim
B
Dim
C
Dim
D
Dim
E
Dim
F
PartNo Price Add
Item
VacuCADSM
Figure Flange Size
(in)
Air
Side
Vac
Side
T/C
pairs
Dim
A
Dim
B
Dim
C
Dim
D
Dim
E
Dim
F
PartNo Price Add
Item
VacuCADSM
1 KF40 Mil-Spec Plug Mil-Spec Plug 2 2.34 3.69 2.16 1.25 4.17 5.52
TFD2JA00008B
$1,154.00
N/A
1 KF50 Mil-Spec Plug Mil-Spec Plug 2 2.34 3.69 2.95 1.25 4.17 5.52
TFD2JA00008C
$1,164.00
N/A
2 KF40 Mil-Spec Plug Mil-Spec Plug 3 2.34 3.69 2.16 1.25 4.17 5.52
TFD3JA00008B
$1,278.00
N/A
2 KF50 Mil-Spec Plug Mil-Spec Plug 3 2.34 3.69 2.95 1.25 4.17 5.52
TFD3JA00008C
$1,293.00
N/A
3 KF40 Mil-Spec Plug Mil-Spec Plug 5 2.74 3.11 2.16 1.25 4.17 5.52
TFD5JA00008B
$1,571.00
(please log in)
3 KF50 Mil-Spec Plug Mil-Spec Plug 5 2.34 3.69 2.95 1.25 4.17 5.52
TFD5JA00008C
$1,582.00
N/A
4 ISO63 Mil-Spec Plug Mil-Spec Plug 10 2.78 3.5 3.74 1.75 5.03 5.32
TFDVJA00008D
$2,040.00
N/A

Note: The electrical and thermal ratings specified are of safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of less than 1 x 10-4 Torr. All VacuCAD files as well as any dimensions shown or listed in our ordering tables do not include manufacturing tolerances and are provided for reference only.

Feedthrough Selection Guide
Finding the right feedthrough has never been easier with our step by step Feedthrough Selection Guide. You can narrow down our feedthrough offering by simply choosing from a variety of different options suitable to your requirements. If you can't find the feedthrough you need or want a custom configuration, please email sales@lesker.com with your inquiry.

Accessories Table

Description Type Per Pkg PartNo Price Add
Item
Description Type Per Pkg PartNo Price Add
Item
For Type J ( 2 pair) Thermocouple F/Ts
Mil-Spec Connector
1 set
FTAAMPH02JMS
$84.00
For Type J ( 3 pair) Thermocouple F/Ts
Mil-Spec Connector
1 set
FTAAMPH03JMS
$116.00
For Type J ( 5 pair) Thermocouple F/Ts
Mil-Spec Connector
1 set
FTAAMPH05JMS
$185.00
For Type J (10 pair) Thermocouple F/Ts
Mil-Spec Connector
1 set
FTAAMPH10JMS
$258.00

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