SMA Female RF Coaxial Connector – Slotted Flange Mount Socket, Stainless Steel, 18GHz Rated
Product Overview
The SMA series is among the most widely used RF connector types due to its small size, wide frequency bandwidth, and superior mechanical and electrical performance. This 4-hole flange mount version is engineered for reliability in high-vibration and harsh environments, making it ideal for mission-critical systems.
Applications
Aerospace & aviation systems
5G base stations
Precision instrumentation and meters
Automotive and marine electronics
Military and communication infrastructure
Product Features
4-hole flange mount for secure panel installation
Stainless steel housing ensures high strength, corrosion resistance, and thermal stability
Slotted inner conductor (0.5 mm wide, 1.5 mm deep) provides elastic contact, reducing resistance and insertion loss
Uniform point mortise structure enhances grounding and signal integrity
Operates reliably in environments with shock, vibration, and extreme temperatures
Complies with global SMA standards for full interchangeability
Product Appearance

Important Technical Parameters
Characteristic impedance | 50Ω | Frequency range | DC-18GHz |
Dielectric withstanding voltage | 1000V | VSWR | ≤1.05+0.012F(GHz) |
Insulation resistance | ≥5000MΩ | Insertion loss | ≤0.05√F(GHZ)dB |
Contact resistance | Center conductor | ≤3.0mΩ | Mechanical property |
Outer conductor | ≤2.0mΩ | Durability | 500 times |


Materials and Surface Treatment
Center conductor | Beryllium bronze, gold plating | Insulating medium | PTFE |
Outer conductor | Stainless steel, passivating | / | / |
Note:
We offer over 10,000 interconnect products, including an extensive selection of RF connector types such as BNC, TNC, MCX, MMCX, SMA, SSMA, SMB, SSMB, BMA, SBMA, SMC, SC, SMP, SSMP, and more.
If you don't see the specific connector you need, feel free to contact us with your requirements — our team is ready to assist with product matching or provide custom solutions tailored to your application.