SMP Feedthroughs
Ultra-High Vacuum SMP Feedthroughs for Space Saving Transmission of High Frequency Signals
Compact. High-Performance. UHV Compatible.
Allectra’s SMP feedthroughs are the smallest coaxial UHV-compatible feedthroughs in our portfolio. Designed for precision applications, these double-sided feedthroughs are ideal for high-frequency signals up to 14 GHz and offer a cost-effective alternative to SMA. Available exclusively welded into flanges, these feedthroughs enable compact, high-density connectivity in ultra-high vacuum environments.
To view the standard range click here
Key Features & Benefits
Materials
- 304L Stainless Steel body
- Very low magnetic permeability
- Fully bakeable
Compact & Miniaturised Design:
- Smallest coaxial feedthrough in our product range
- Up to 4 SMP feedthroughs on CF16 (1.33″) flanges#
- Less than 6mm diameter and approx. 8mm high
Superior Electrical & Thermal Performance
- 50 Ohm impedance for easy integration
- Voltage rating: 335V RMS, 500V DC, max. 1A
- Frequency rating: Up to 14 GHz, with VSWR <1.1 (10GHz), <1.3 (12GHz), <1.5 (14GHz)
- Temperature range: 4K to 400°C, excluding connectors, -55°C to 165°C with connectors
Optimised for UHV Applications
- Leak Rate <2×10⁻¹⁰ mbar l/s He
- Designed to suit MIL STD 348, figure 326 and DESC 94007 & 94008 specifications
Available Options:
- Limited Detent (LD) and Smooth Detent (SD)
- Smooth Detent (SD) – Designed for ~1000 insertions, ideal for quick connections. Insertion force 9N max, disengagement 2 N min.
- Limited Detent (LD) – Designed for ~500 insertions. Insertion force 45N max, disengagement 9 N min. This will ensure a more secure connection.
- Connectors are suitable for both SD and LD feedthroughs
- Available on standard and custom flanges
- Connectors are compatible with our vacuum coaxial cables 301-KAP50, 301-KAP50S and our air-side 314-COAX-RG405
Applications
- Microscopy & Measurement Equipment
- Quantum Computing
- Semiconductor & Thin Film Deposition Systems
- Particle Accelerators & Research Facilities
- Aerospace & High-Precision Instrumentation
- And many more…
For a custom design using SMP feedthroughs, click here to contact us and get a quote.