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.
Features
· Threaded SMA coaxial feedthrough with 50Ω impedance matching.
· Four high-frequency options: 18 GHz, 27 GHz, 40 GHz.
· The 40 GHz version uses O-ring sealing for high-vacuum environments only.
· One unit fits on a CF16 flange, and 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 | 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) |
Dimensions
CF Flange Selection Table |
| 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 |
KF Flange Selection Table |
| 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. |
Weldable Version Selection Table |
| Number of Feedthroughs | SMA 18G Model | SMA 27G Model | SMA 40G Model |
| 1 | MT140-SMAD18G-WV | MT140-SMAD27G-WV | MT140-SMAD40G-WV |
Related Accessories |
| 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. |
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