General-purpose coaxial feedthrough for applications where impedance control or high voltage is not required. Available in single-ended BNC or double-ended BNCD configurations. CF16 flanges support 1 unit; CF40 flanges accommodate up to 4 units. Custom flanges and weldable versions are available. Features grounded shielding with non-fixed impedance matching. Single-ended BNC uses a 2.4 mm conductor, while BNCD uses BNC connectors at both ends. Rated at 500 VDC max, 3 A. Operates from -200°C to 450°C under UHV (<1×10⁻¹⁰ mbar). Optional dual-end connectors and cables are available.

PRODUCTS

TEL 15301310116

Madison Technology Co., Ltd

TEL：15301310116

email：sales@madison-tech.com

address：1st floor, Building 11, Zhongguancun Software Park, Haidian District, Beijing

Overview

Features

General-purpose coaxial feedthrough for applications not requiring impedance control or high voltage.

Available in single-ended BNC or double-ended BNCD configurations.

One unit fits on a CF16 flange; up to 4 units on a CF40 flange.

Multiple feedthroughs can be welded onto larger flanges.

Optional connectors and cables available for both ends.

Custom flange and feedthrough configurations available upon request.

Parameters

Specification
Shielding Type	Grounded Shielding
Impedance Matching	Non-fixed
Conductor Diameter	Single-ended: 2.4 mm Double-ended: BNC connector
Maximum Voltage	500V DC
Maximum Current	3A
Temperature Range	-200°C ~ 450°C
Ultimate Vacuum	<1×10⁻¹⁰ mbar
Leak Rate	<1×10⁻¹² Pa·m³/s (He)

Dimensions

CF Flange Selection Table
Flange	Number of Feedthroughs	Single-ended BNC Feedthrough	Double-ended BNCD Feedthrough
CF16	1	MT140-BNC-C16	MT140-BNCD-C16
CF40	1	MT140-BNC-C40	MT140-BNCD-C40
CF40	2	MT140-BNC-C40-2	MT140-BNCD-C40-2
CF40	3	MT140-BNC-C40-3	/
CF40	4	MT140-BNC-C40-4	/

KF Flange Selection Table
Flange	Number of Feedthroughs	Single-ended BNC Feedthrough	Double-ended BNCD Feedthrough
KF16	1	MT140-BNC-K16	MT140-BNCD-K16
KF40	1	MT140-BNC-K40	MT140-BNCD-K40
KF40	2	MT140-BNC-K40-2	MT140-BNCD-K40-2
KF40	3	MT140-BNC-K40-3	/
KF40	4	MT140-BNC-K40-4	/
Note: For other flange and feedthrough combinations, please contact us.

Weldable Version Selection Table

Number

of Feedthroughs

Single-ended BNC Feedthrough

Double-ended BNCD Feedthrough

MT140-BNC-WV

MT140-BNCD-WV

Related Accessories
Type	BNC Coaxial Feedthrough	BNCD Coaxial Feedthrough
Vacuum-side Connector	MT160-PPOC-2.4 MT160-CRFC-2.4 MT145-CON-SBNC-VAC	MT145-CON-BNC-VAC
Vacuum Cable	MT165-PTFE50 Coaxial Cable MT165-KAP50 Coaxial Cable MT165-KAPM Series
Vacuum-side Connector + Cable	MT145-SBNC-FX-PTFE50-500-VAC	MT145-BNC-MX-PTFE50-500-VAC
Air Connector	MT145-CON-BNC-AIR
Air-side Connector + Cable	MT145-BNC-MX-500-AIR

Product Inquiry