Adapter N (f) – SMA (m), 18 GHz, measurement quality

Product detailed description

This measurement-grade N female – SMA male coaxial adapter is designed for the precise connection of instruments, cables and antennas with N connectors to devices and modules with SMA connectors in the DC–18 GHz band. Unlike common low-cost adapters primarily intended for Wi-Fi and LoRa antennas up to 3–6 GHz, this adapter features a precision-machined body, gold-plated beryllium bronze contacts and guaranteed parameters across the entire band up to 18 GHz. When measuring with a NanoVNA or spectrum analyser, it introduces only minimal reflection and attenuation to the result, ensuring repeatable results even after hundreds of connections.

How it differs from standard adapters:

• Wide bandwidth: guaranteed parameters up to 18 GHz, whereas standard adapters are typically specified up to 3–6 GHz or not at all.
• Low reflection: VSWR max. 1.20:1 across the entire band, ensuring the adapter does not affect the measurement of antennas and filters.
• Low insertion loss: max. 0.25 dB up to 18 GHz.
• High-quality contacts: the centre conductor made of gold-plated beryllium copper maintains flexibility and a constant contact resistance, whereas cheap adapters often have brass contacts with thin plating.
• Durable body: brass with a ternary alloy surface (Cu-Sn-Zn) prevents tarnishing and oxidation, and the PTFE insulator withstands temperatures up to +165 °C.
• Long service life: min. 500 mating cycles while maintaining parameters.
• Verified parameters: the manufacturer provides measured SWR and insertion loss plots from a Keysight vector analyser.

Specifications:

• Model: QY-N-SMA-KJSD
• Connectors:
  • N female (external thread, socket)
  • SMA male (internal thread, centre pin)
• Impedance: 50 Ω
• Frequency range: DC–18 GHz
• SWR: max. 1.20:1
• Insertion loss: max. 0.25 dB
• Insulation resistance: ≥ 5000 MΩ
• Dielectric strength: 1000 V
• Service life: min. 500 mating cycles
• Material:
  • Inner conductor: beryllium bronze, gold-plated
  • Body: brass with ternary alloy plating
  • Insulator: PTFE
• Operating temperature: −55 °C to +165 °C
• Dimensions: length 34.7 mm
• Suitable for:
  • NanoVNA 2.8" vector network analyser
  • HTOOL SA8 Spectrum Analyzer and Signal Generator
• Related:
  • SMA (m) – SMA (m) test cable, RG223, 6 GHz
  • SMA Termination 50 Ω, 2 W, DC–18 GHz, SWR ≤ 1.15

Package contents:

• 1× N female – SMA male adapter

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.