A variant of BNC coaxial feedthrough with embedded pins for increased voltage rating. Features grounded shielding with non-fixed impedance matching. Available in single-ended MHV or double-ended MHVD configurations. Single-ended version uses a 2.4 mm conductor; double-ended version uses MHV interface. Rated at 5 kV max, 3 A. Operates from -200°C to 450°C under UHV (<1×10⁻¹⁰ mbar). CF16 flanges support 1 unit; CF40 flanges accommodate up to 4 single-ended units. Custom flange-feedthrough combinations and weldable versions available. Optional dual-end connectors and cables available.
Features
· Variant of BNC feedthrough with embedded pins, increasing rated voltage to 5 kV.
· Grounded shielding with non-fixed impedance matching.
· Available in single-ended MHV or double-ended MHVD 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 pin Double-ended: MHV Interface |
Maximum Voltage | 5000 V DC |
Maximum Current | 3 A |
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 MHV Model | Double-ended MHVD Model |
| CF16 | 1 | MT140-MHV-C16 | MT140-MHVD-C16 |
| CF40 | 1 | MT140-MHV-C40 | MT140-MHVD-C40 |
| CF40 | 2 | MT140-MHV-C40-2 | MT140-MHVD-C40-2 |
| CF40 | 3 | MT140-MHV-C40-3 | / |
| CF40 | 4 | MT140-MHV-C40-4 | / |
KF Flange Selection Table |
| Flange | Number of Feedthroughs | Single-ended MHV Model | Double-ended MHVD Model |
| KF16 | 1 | MT140-MHV-K16 | MT140-MHVD-K16 |
| KF40 | 1 | MT140-MHV-K40 | MT140-MHVD-K40 |
| KF40 | 2 | MT140-MHV-K40-2 | MT140-MHVD-K40-2 |
| KF40 | 3 | MT140-MHV-K40-3 | / |
| KF40 | 4 | MT140-MHV-K40-4 | / |
Note: For other flange and feedthrough combinations, please contact us. |
Weldable Version Selection Table |
| Number of Feedthroughs | Single-ended MHV Model | Double-ended MHVD Model |
| 1 | MT140-MHV-WV | MT140-MHVD-WV |
Related Accessories |
| Accessory | MHV Coaxial Feedthrough | MHVD Coaxial Feedthrough |
| Vacuum Side Connector | MT160-PPOC-2.4 MT160-CRFC-2.4 MT145-CON-SMHV-VAC | MT145-CON-MHV-VAC |
| Vacuum Cable | MT165-PTFE50 coaxial cable MT165-KAP50 coaxial cable MT165-KAPM series |
| Vacuum Side Connector + Cable | MT145-SMHV-FX-PTFE50-500-VAC | MT145-MHV-MX-PTFE50-500-VAC |
| Air Side Connector | MT145-CON-MHV-AIR |
| Air Side Connector + Cable | MT145-MHV-MX-500-AIR |