Introduction
A U.FL to SMA cable assembly is a small RF connectivity solution commonly utilized in modern wireless and embedded systems. It connects ultra-small RF modules or PCBs (via U.FL connectors) to external antennas or RF equipment utilizing SMA connectors.
These assemblies are essential in IoT devices, Wi-Fi modules, GPS receivers, LTE/5G routers, and compact RF designs where space limits and signal integrity are both required.
What Is a U.FL-to-SMA Cable Assembly ?
A U.FL to SMA cable assembly is comprised of:
- On One end, there is a U.FL (I-PEX / MHF) connector and a snap-on, small RF connector attached on the PCB.
- The Other end has a SMA connector (Male or Female) and a threaded RF connector for connecting antennas or RF devices securely.
- Thin RF coaxial cable (RG178, RG174, 1.13mm, 1.37mm)
Types of UFL to SMA Cable Assembly :
1. Based on the SMA connector Type
U.FL to SMA Male :
- Most typically used for direct antenna connections.
U.FL to SMA Female :
- Used for panel-mounting or extension purposes.
2. Based on Cable Type
U.FL to SMA using 1.13mm cable :
- Ultra-thin, suitable for tiny IoT and wearables.
U.FL to SMA using RG178 cable :
- Improved shielding and temperature resistance
U.FL to SMA using RG174 cable :
- Increased durability for longer cable runs.
3. Based on Orientation
Straight U.FL to SMA Assembly :
- Right-angled U.FL to SMA assembly (space-optimized PCB design)
4. Based on Customization
- Custom Cable length.
- Custom SMA orientation (bulkhead or panel mount)
- Custom impedance and jacket material.
Key Features of U.FL to SMA Cable Assembly :
- Compact and lightweight design.
- Impedance matching at 50Ω ensures RF stability.
- Low insertion loss for short RF paths.
- Secure SMA threaded connection.
- Easy snap-on U.FL PCB interface.
- Available in customized lengths and cable types.
- Compatible with Wi-Fi, GPS, LTE, 5G, LoRa, and ISM bands.
Technical Specifications (U.FL to SMA Cable Assemblies) :
| Parameter | Specification |
|---|---|
| Connector A | U.FL / I-PEX / MHF |
| Connector B | SMA Male / SMA Female |
| Impedance | 50 Ohm |
| Cable Types | 1.13mm, 1.37mm, RG178, RG174 |
| Frequency Range | DC to 6 GHz (Cable dependent) |
| VSWR | ≤ 1.5:1 |
| Operating Temperature | -40°C to +85°C |
Applications of U.FL to SMA Cable Assembly
U.FL to SMA assemblies are utilized in a variety of RF and wireless products:
Wireless and Communication
- WiFi routers and modules
- LTE, 4G, and 5G CPE devices
- LoRa and ISM band radios
IoT and Embedded Systems
- Smart Meters
- Industrial IoT gateways
- Asset tracking devices
GNSS and Navigation
- GPS/GNSS modules
- Fleet tracking systems
- UAV/drone navigation units
Consumer and Industrial Electronics
- Mini PCs and integrated boards.
- RF test equipment
- Vehicle telematics systems
Why should you choose U.FL over SMA Cable Assemblies ?
- Perfect for space-constrained designs.
- Allows external antenna hookup.
- Reduces PCB redesign complexity.
- Enables high-frequency RF performance.
- Easily configurable to meet OEM requirements
Eteily Technologies manufactures and tests its U.FL to SMA cable assemblies in-house, ensuring impedance correctness, mechanical reliability, and consistent RF Performance.
Contact Us
Eteily Technologies India Pvt. Ltd.
📫 Address: B28 Vidhya Nagar, Near SBI Bank,
📍 District: Bhopal, PIN: 462026, Madhya Pradesh
🌐 Website: https://eteily.com
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