High-frequency SMA coaxial feedthrough with selectable maximum frequencies of 18, 27, 40 GHz. Threaded connection with grounded shielding, 50 Ω impedance matching, and VSWR of 1.25. Double-ended SMA interface. Rated at 1000 VDC max, 3 A. CF16 flanges support 1 unit, while CF40 flanges accommodate up to 4 units. Custom flange and feedthrough configurations and weldable versions available. Optional dual-end connectors and cables available.

Shielding Type

Grounded Shielding

Impedance Matching

50 Ω

VSWR

1.25

Interface

Dual-ended SMA

Maximum Voltage

1000 V DC

Maximum Current

3 A

Maximum Frequency

Up to 18 / 27 / 40 GHz

Temperature Range

-200 °C ~ 300 °C

Ultimate Vacuum

< 1×10⁻¹⁰ mbar

Leak Rate

< 1×10⁻¹² Pa·m³/s (He)

Flange

Number 

of Feedthroughs

SMA 18G Model

SMA 27G Model

SMA 40G Model

CF16

1

MT140-SMAD18G-C16

MT140-SMAD27G-C16

MT140-SMAD40G-C16

CF40

1

MT140-SMAD18G-C40

MT140-SMAD27G-C40

MT140-SMAD40G-C40

CF40

2

MT140-SMAD18G-C40-2

MT140-SMAD27G-C40-2

MT140-SMAD40G-C40-2

CF40

3

MT140-SMAD18G-C40-3

MT140-SMAD27G-C40-3

MT140-SMAD40G-C40-3

CF40

4

MT140-SMAD18G-C40-4

MT140-SMAD27G-C40-4

MT140-SMAD40G-C40-4

Flange

Number 

of Feedthroughs

SMA 18G Model

SMA 27G Model

SMA 40G Model

KF16

1

MT140-SMAD18G-K16

MT140-SMAD27G-K16

MT140-SMAD40G-K16

KF40

1

MT140-SMAD18G-K40

MT140-SMAD27G-K40

MT140-SMAD40G-K40

KF40

2

MT140-SMAD18G-K40-2

MT140-SMAD27G-K40-2

/

KF40

3

MT140-SMAD18G-K40-3

/

/

KF40

4

MT140-SMAD18G-K40-4

/

/

Note: For other flange and feedthrough combinations, please contact us.

Number 

of Feedthroughs

SMA 18G Model

SMA 27G Model

SMA 40G Model

1

MT140-SMAD18G-WV

MT140-SMAD27G-WV

MT140-SMAD40G-WV

Accessory

Model

SMA 18G Vacuum-side Connector + Cable

MT146-SMA18G-MM-300

Note:
1. Length is customizable.
2. Other high-frequency cables are also available for customization.