<h2>High (HV) and Ultrahigh (UHV) SMA Coaxial Feedthroughs and Components</h2><p>The Subminiature Type-A connector, usually referred to as an <strong>SMA coaxial</strong> connection, has a compact design ideally suited for high frequency signal transmission. Accu-Glass Products' SMA feedthroughs are constructed with either floating shields or grounded shields.</p><p><strong>Floating</strong> shields provide two concentric conductors: one outer metal tube or shield conductor concentric with, and enclosing a cylindrical center conductor. Both electrical paths are electrically isolated from the vacuum flange.</p><p><strong>Grounded</strong> shields provide only one electrical path that is electrically isolated from the vacuum flange. With grounded shields, the shield and vacuum flange are electrically common.</p><p><strong>Ultrahigh (UHV)</strong> and <strong>High Vacuum (HV) </strong>compatible coaxial cable assemblies are available to meet the needs of most <strong>in-vacuum</strong>, low noise instrumentation cable applications. The vacuum side of a single ended, grounded and floating SMA vacuum feedthrough consists of a 0.094 inch diameter conductor pin that mates perfectly with Accu-Glass Products' grounded or floating AccuFast™ connector interface.</p><p>CLICK ON A CATEGORY BELOW TO SEE OUR AVAILABLE PRODUCTS FOR PURCHASE.</p>
High (HV) and Ultrahigh (UHV) SMA Coaxial Feedthroughs and Components
The Subminiature Type-A connector, usually referred to as an SMA coaxial connection, has a compact design ideally suited for high frequency signal transmission. Accu-Glass Products' SMA feedthroughs are constructed with either floating shields or grounded shields.
Floating shields provide two concentric conductors: one outer metal tube or shield conductor concentric with, and enclosing a cylindrical center conductor. Both electrical paths are electrically isolated from the vacuum flange.
Grounded shields provide only one electrical path that is electrically isolated from the vacuum flange. With grounded shields, the shield and vacuum flange are electrically common.
Ultrahigh (UHV) and High Vacuum (HV) compatible coaxial cable assemblies are available to meet the needs of most in-vacuum, low noise instrumentation cable applications. The vacuum side of a single ended, grounded and floating SMA vacuum feedthrough consists of a 0.094 inch diameter conductor pin that mates perfectly with Accu-Glass Products' grounded or floating AccuFast™ connector interface.
Warning — SMAs, with .250-36 thread and .035/.037 pin diameter, are often mistaken for Microdot S-93, connectors with .250-32 threads and .030/.033 pins. To avoid possible damage to one or both connector interfaces, these connectors should never be cross-mated. Compare Microdot ® and SMA differences below...
Features
- SMA Coaxial Interface
- Grounded and Floating Shield
- Single and Double Ended configurations
- Kapton® insulated 50-Ohm cables
- High temperature rated to 250°C
- UHV compatible construction
- Conflat® and ISO KF compatible mounts
- Air service cables / connectors
- Custom solutions on request
Specifications
| Electrical | |
| Voltage 1, Maximum | |
| Grounded Shield | 700 VDC |
| Floating Shield | 700 VDC |
| Current, Max @ 20°C | 1 A |
| Impedance2, Nominal | 50 Ohms |
| Frequency2, Nominal | 6 GHz |
| Material | |
| Shell | 304 Ss |
| Pin / Conductor | 304 Ss |
| Insulation, Ceramic | Alumina |
| Connector, Vacuum 3 | |
| AccuFast™ | PEEK / Ss |
| SMA (Au plated) | PEEK / Brass |
| Connector, Air | Teflon® |
| Cable Insulation (Type F Film) | Kapton® |
| Vacuum Range | |
| UHV, Ultrahigh vacuum | 1x10E-10 Torr |
| HV, High vacuum | 1x10E-8 Torr |
| Temperature Range4 | |
| Feedthrough, Single Ended | 250°C |
| Flange, Conflat® | 450°C |
| Flange, ISO | 150°C |
| Connector / Cable, Air | 165°C |
| Connector / Cable, UHV | 250°C |
| Thermal Gradient, Maximum | 25°C/minute |
| Notes |
- Electrical ratings are maximum test values, with feedthrough's vacuum side at ≤ 1x10-4 Torr. Feedthroughs are intended for instrumentation applications carrying low level signal voltage/current.
- Impedance and frequency ratings may vary with the type of interface cables and connectors used.
- PEEK is a polyether ether ketone thermoplastic.
- Overall assembly ratings must be adjusted to that of its lowest rated component. For cryogenic service, the lowest recommended temperature is -200°C
- Connectors and cables are not included with feedthrough and must be purchased separately.