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BNC Feedthroughs - NPT, Single-Ended

These instrumentation feedthroughs have BNC coaxial connectors on the air-side. The connector-plug pair's impedance is (unmatched) 48-52 ohms (matched 50 ohm pairs are available). The alumina insulated conductor is rated at 500V with a grounded shield and at 2500V with a floating shield, at 3A. Air-side cable plugs are included with the feedthrough but vacuum-side connectors are not. NPT threads are designed for use in high vacuum environments, when suitably sealed with tape, grease, or wax.

Specifications Table

Impedance48—52 ohms
Conductor MaterialStainless Steel
Insulator MaterialAlumina
CableRG-58U
ConnectionBayonet
Vacuum ApplicationHV or UHV
Temperature Range
(for metal seals)
Weld Adapter, CF: -200°C to +450°C
Temperature Range
(for elastomer seals)
KF, O-Ring, NPT: To +150°C
Temperature Max. Ramp Rate25°C/minute
Temperature Range
(cable connectors)
Cable Connectors: -65°C to +165°C
Max. Voltage
(for floating shields)
Shield-Ground: 2,500V DC
Shield-Pin: 500V DC
Max. Voltage
(for grounded shields)
500V DC
Max. Current3A

Diagrams & Instructions Please click HERE to view Feedthrough cabling diagrams & instructions.

Dimensional Drawings

Contact Us
To speak with someone directly, please call 1-412-387-9200 or email international@lesker.com.
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 Voltage
(V)
Current
(A)
# of
Conductors
Conductor
Material
Conductor
Diameter
Flange/
Mounting
Insulator
Material
Shield Impedance Air
Side
Vac
Side
Dim
A
Dim
B
Dim
C
Dim
D
PartNo Price Add
Item
VacuCADSM
Figure Voltage
(V)
Current
(A)
# of
Conductors
Conductor
Material
Conductor
Diameter
Flange/
Mounting
Insulator
Material
Shield Impedance Air
Side
Vac
Side
Dim
A
Dim
B
Dim
C
Dim
D
PartNo Price Add
Item
VacuCADSM
1 500 3 1 Stainless Steel 0.094 3/8"MNPT Alumina Grounded 48-52 Ohm BNC Pin 1.33 0.43 0.69 N/A
IFTBG012035
$94.00
(please log in)
2 500 3 1 Stainless Steel 0.094 1/2"MNPT Alumina Floating 48-52 Ohm BNC Pin 2.94 0.38 0.88 0.37
IFTBF012035
P.O.R.
(please log in)

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
Copper, 12" long ( 0.094" diameter)
Bare Wire
1 piece
FTAWCU094
P.O.R.
Insulators for 0.116" diameter wire (1ft. long)
Ceramic Beads
54 pieces
FTACERB116
$44.60
For BNC style Instrument F/Ts (500V max)
Coaxial Connector
1 set
FTABNC
$10.10
Be/Cu connector for 0.120" wire (25A max)
Inline Barrel Connector
10 pieces
FTAIBC120
$55.40
Be/Cu connector for joining 0.094" to 0.050" wire
Set-Screw Connector
10 pieces
FTASSC094
$50.00
12" long (contact style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BB12
P.O.R.
24" long (contact style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BB24
$155.00
36" long (contact style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BB36
$170.00
12" long (contact & inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BC12
P.O.R.
24" long (contact & inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BC24
P.O.R.
36" long (contact & inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25BC36
P.O.R.
12" long (inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25CC12
$145.00
24" long (inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25CC24
$170.00
36" long (inline style terminations)
Vacuum Connector Cable (1/4")
1 cable
FTACBL25CC36
P.O.R.
12" long (contact style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BB12
P.O.R.
24" long (contact style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BB24
P.O.R.
36" long (contact style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BB36
P.O.R.
12" long (contact & inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BC12
P.O.R.
24" long (contact & inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BC24
P.O.R.
36" long (contact & inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12BC36
P.O.R.
12" long (inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12CC12
$134.00
24" long (inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12CC24
$165.00
36" long (inline style terminations)
Vacuum Connector Cable (1/8")
1 cable
FTACBL12CC36
$201.00

 

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