Threaded SMA coaxial feedthrough with 50 Ω impedance matching and grounded shielding. Available in single-ended SMA50 or double-ended SMAD50 configurations. Single-ended version uses a 1.8 mm conductor, while double-ended version uses SMA connectors at both ends. Rated at 1000 VDC max, 3 A. Frequency range: up to 6.5 GHz. Operates from -200°C to 300°C under UHV (<1×10⁻¹⁰ mbar). CF16 flanges support 1 unit; CF40 flanges accommodate up to 4 units. Custom flanges and weldable versions available. Optional vacuum-side and air-side connectors and cables 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

Threaded SMA coaxial feedthrough with 50Ω impedance matching, supporting frequencies up to 6.5 GHz.

Available in single-ended SMA50 or double-ended SMAD50 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	50Ω
Conductor Diameter	Single-ended: 1.8 mm Double-ended: SMA Interface
Maximum Voltage	1000V DC
Maximum Current	3A
Frequency Range	AC to 6.5 GHz
Temperature Range	-200 °C ~ 300 °C
Ultimate Vacuum	< 1×10⁻¹⁰ mbar
Leak Rate	< 1×10⁻¹² Pa·m³/s (He)

Dimensions

SMA50/SMAD50 Coaxial Feedthrough

KF Flange Selection Table
Flange	Number of Feedthroughs	Single-Ended SMA50	Double-Ended SMAD50
KF16	1	MT140-SMA50-K16	MT140-SMAD50-K16
KF40	1	MT140-SMA50-K40	MT140-SMAD50-K40
KF40	2	MT140-SMA50-K40-2	MT140-SMAD50-K40-2
KF40	3	MT140-SMA50-K40-3	MT140-SMAD50-K40-3
KF40	4	MT140-SMA50-K40-4	MT140-SMAD50-K40-4
Note: For other flange and feedthrough combinations, please contact us.

Weldable Version Selection Table

Number

of Feedthroughs

Single-Ended SMA50

Double-Ended SMAD50

MT140-SMA50-WV

MT140-SMAD50-WV

Related Accessories
Accessory	SMA50 Coaxial Feedthrough	SMAD50 Coaxial Feedthrough
Vacuum-side Connector	MT160-PISC-1.8 MT145-CON-SSMA-VAC	MT145-CON-SMA-VAC
Vacuum Cable	MT165-PTFE50 coaxial cable MT165-KAP50 coaxial cable MT165-KAPM series
Vacuum-side Connector + Vacuum Cable	MT145-SSMA-FX-PTFE50-500-VAC	MT145-SMA-MX-PTFE50-500-VAC
Air-side Connector	MT145-CON-SMA-AIR
Air-side Connector + Cable	MT145-SMA-MX-500-AIR

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