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

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