In the world of wireless communication devices, a tiny connector might seem insignificant at first glance—but it can make a big difference when it comes to signal stability, product lifespan, and overall system performance. The Kinghelm KH-SMA-KWE6.3 SMA Female Right-Angle PCB Connector is one of those components that feels "just right" once you start using it.

Kinghelm KH-SMA-KWE6.3 Product Image

This model features a standard SMA interface, PCB mount type, female connector, and a right-angle design (length: 17mm, thread length: 6.3mm). The build quality is solid throughout: the housing is made of gold-plated brass, the inner contact uses gold-plated HPb59-1, and the insulator is high-performance PTFE. With a characteristic impedance of 50Ω, it fully meets the demands of RF signal transmission.

So, where does it really shine? One of the most practical applications is in vehicle-mounted GPS positioning modules.

Today, whether you're driving a traditional vehicle or an EV, GPS has become a standard feature. And modern in-vehicle GPS systems go far beyond simple navigation—they support route tracking, fleet management, and even integrate with dash cams. For all of this to work reliably, the connection between the antenna and the main controller must be solid and stable.

That’s exactly where the KH-SMA-KWE6.3 RF Coaxial Connector stands out. Space inside automotive electronics is typically limited, and interface layout is often very compact. Its right-angle and half-threaded design is perfect for solving these layout constraints. The elbow allows for easier cable routing, and the half-threaded construction prevents over-tightening that can damage the interface—ensuring a firm, long-lasting connection.

From a technical standpoint, a vehicle GPS module works by receiving satellite signals via the antenna, calculating location data, and then passing it to the MCU or control system. The connector, in this case, acts like a rivet in the chain—if it fails, everything else becomes unreliable. The KH-SMA-KWE6.3 ensures stable signal transmission and strong anti-interference performance, making it well-suited for high-temperature and vibration-prone automotive environments.

Beyond vehicle GPS, this connector finds utility in a wide range of other applications. It’s widely used in NB-IoT terminal modules, industrial wireless sensors, Wi-Fi communication modules, and external antenna systems. As long as your device requires reliable RF connectivity, this model is a solid choice. Many OEM and ODM engineers prefer it not only for its performance but also because it’s easy to solder, supports tape-and-reel packaging, and is ideal for high-volume SMT production.

The KH-SMA-KWE6.3 RF Coaxial Connector is also RoHS compliant, making it export-friendly to environmentally regulated markets such as Europe and North America. While it's not the most expensive or high-profile component on your board, it’s often the one you least want to fail—because repairing it can be the most time-consuming. That’s why more developers are opting for reliable, durable, and maintenance-free RF connectors right from the start of their projects.

Kinghelm KH-SMA-KWE6.3 Specification

In short, the Kinghelm KH-SMA-KWE6.3 RF Coaxial Connector may not be the most eye-catching component on your BOM, but once it’s in use, you’ll appreciate the attention to detail and the problem-solving it brings to real-world engineering. It doesn't seek the spotlight—but it's the unsung hero behind many successful wireless products.

About Kinghelm

Shenzhen Kinghelm Electronics Co., Ltd.（www.kinghelm.net）has technical backbones from Tsinghua University and UESTC, and has introduced overseas returnee professionals. Kinghelm is able to develop highly reliable and high-performance antenna and connector products.KH series products of "Kinghelm" brand include Beidou/GPS antennas, RF adapter connectors, plug connector, electrical data connectors, terminals, and customized vehicle harnesses, industrial / medical connectors, and special antenna connectors."Kinghelm connects world", Kinghelm has grown with the development of China's Beidou industry. Starting from supplying Beidou/GPS dual mode antennas, IPEX terminals, and RF adapter cables for automotive manufacturers, Kinghelm has continuously developed products. Currently, it has a series of WiFi, Bluetooth, NB-loT, LoRa, Zigbee, UWB, and GSM antennas, RFID tags, RF adapter cables, standard microwave antennas, vehicle grade SMA, SMB, FAKRA holders, coaxial cables, and can customize non-standard antenna connectors based on customer drawings or samples.

KH-SMA-KWE6.3To Product Page