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SMA Female RF Coaxial Connector PCB End Launch Antenna Interface

This SMA-KE series PCB female RF coaxial connector is a standard wire-to-board antenna interface, full-body gold-plated brass structure, available in straight vertical and 90° right-angle elbow two PCB mounting styles. It is designed for WiFi/Bluetooth/IoT wireless module PCBs, surveillance mainboards, FPV drone control boards, industrial gateway signal boards and miniature RF test equipment. Standard 50Ω impedance matching, SMA-K internal hole female thread specification, matched with SMA-J male antenna pigtails and omnidirectional WiFi rubber antennas. Vertical straight pin and right-angle elbow through-hole PCB solder pins support automatic wave soldering production lines; thick full gold plating realizes ultra-low contact resistance, anti-oxidation and anti-fretting corrosion for long-term stable high-frequency signal transmission from DC to 6GHz. Fully RoHS compliant, customizable thread length, pin spacing and flange structure, widely used for built-in antenna base interfaces of all kinds of 2.4G/5.8G wireless communication hardware.

Model:
SMA RF Coaxial Connector
Brand:
huamao

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SMA Connector Female Connector RF Coaxial Connector Antenna Interface WiFi antenna FPV drone RF coaxial connector

Product Description

Integrated PCB three-pin ground bracket realizes full metal shell grounding shielding, effectively isolating interference from power chips and servo circuits on the mainboard to prevent WiFi/Bluetooth signal drift and packet loss. Dual straight/elbow structural selection adapts different equipment internal space layout: vertical straight type for thick control boards with upward antenna installation; right-angle elbow for ultra-thin flat IoT modules with side antenna outlet to reduce overall equipment thickness. Whole-body thick gold plating avoids contact resistance rise caused by long-term temperature cycling and plug/unplug wear, guaranteeing stable low VSWR high-frequency signal transmission from DC to 6GHz. Long threaded nut version reserves enough space for panel installation gaskets, supporting external equipment shell antenna mounting, while short elbow version saves PCB surface layout area for compact mini wireless modules.

Every SMA-KE PCB socket passes strict factory RF testing before shipment, including VSWR standing wave full-band scan, connector plug/unplug cycle test, gold plating adhesion test and high-low temperature aging screening. We supply single straight/elbow SMA-KE connectors and matched SMA-J antenna feeder pigtails for wireless module manufacturers, smart camera brands and FPV drone hardware R&D teams.

Specifications

Connecto Model	SMA-KE PCB through-hole female coaxial socket
System Impedance	Standard RF matching impedance
PCB Mounting Form	3-pin separated through-hole solder bracket
Operating Temperature Range	-40℃ to +85℃

Advantages

Dual straight vertical + 90° elbow PCB mounting design: Flexible matching vertical upward and horizontal side antenna layout schemes, solve space limitation pain points of ultra-thin IoT modules and thick industrial gateway control boards respectively.
Full-body thick gold-plated brass anti-corrosion RF structure: Uniform hard gold coating effectively inhibits oxidation and fretting corrosion, long-term stable low contact resistance to minimize high-frequency signal attenuation and standing wave loss.
3-pin integrated ground PCB bracket: Metal shell fully grounded with PCB ground layer to form closed 360° electromagnetic shielding loop, filter power supply and motor EMI noise to avoid wireless signal distortion and disconnection.
High-temperature PTFE dielectric core: Stable dielectric constant under wide temperature range, no thermal deformation during PCB reflow soldering, compatible with automated SMT wave soldering mass production lines.
Universal SMA standard female thread interface: Perfectly matched with all SMA-J male WiFi antennas, RF test probes and RG316/RG174 coaxial feeder cables on the market, strong universal compatibility.
Wireless PCB exclusive targeted customization service: Supply single PCB antenna bases and complete supporting SMA antenna pigtails; small-batch prototype samples available for new IoT gateway, smart surveillance camera and FPV drone wireless module development verification.

Application

Industrial IoT Wireless Communication Modules:4G/WiFi dual-mode gateway mainboard SMA-KE vertical antenna base, workshop PLC Bluetooth communication module elbow PCB RF socket, intelligent cabinet environmental monitoring wireless signal PCB mount connector
Network Surveillance & Smart Camera Equipment:POE wireless surveillance camera control board straight SMA-KE antenna socket, battery-powered mini camera right-angle elbow PCB RF base, NVR wireless signal receiving board coaxial antenna connector
FPV Drone & RC Wireless Model Hardware:FPV racing drone flight control board elbow SMA antenna PCB socket, wireless image transmission module vertical SMA-KE female base, educational programming robot WiFi communication PCB coaxial connector
Smart Home Consumer Wireless Hardware:Smart air purifier / thermostat WiFi module straight SMA-KE antenna base, smart door lock Bluetooth PCB RF socket, home mini NAS dual-band wireless communication coaxial connector
Laboratory RF Test Mini Instruments:Portable field strength detector PCB SMA female antenna socket, multi-channel wireless signal test bench elbow SMA-KE base, miniature spectrum analyzer built-in antenna coaxial connector

FAQ

Q1: What is the difference between straight vertical SMA-KE and 90° elbow SMA-KE?

A: Straight vertical type extends the antenna vertically upward, with longer external thread for equipment panel installation; 90° elbow horizontal side outlet reduces PCB vertical occupied height, suitable for ultra-thin flat wireless modules with limited thickness space.

Q2: Why does this SMA-KE connector use a 3-pin ground PCB bracket?

A: Three separated solder pins fix the connector firmly on the PCB, meanwhile the metal shell is connected to the PCB ground plane through the pins to form full shielding, isolating external electromagnetic interference and improving wireless signal stability.

Q3: What frequency wireless signals is this SMA-KE PCB socket suitable for transmission?

A: Standard version supports DC~6GHz, fully compatible with 2.4G WiFi, 5.8G WiFi, Bluetooth, Sub-GHz IoT and GPS positioning signals; upgraded precision version can reach 12.4GHz for microwave laboratory test equipment.

Q4: Can this SMA-KE pass PCB automatic wave soldering process?

A: Yes, the through-hole separated pin structure and high-temperature PTFE dielectric can withstand reflow soldering high temperature without deformation, matching mass production automatic welding lines.

Q5: What antenna accessories can be matched with SMA-KE female thread interface?

A: All standard SMA-J male plug products, including omnidirectional WiFi rubber antennas, SMA to U.FL IPEX pigtail jumpers, RG316 RF extension feeder cables and RF test probes.