SKU: IOWC-0755
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5cm RG178 IPEX 1 to RP-SMA Female RF Pigtail Cable

₹82.00 (Inclusive of all taxes)
Out of Stock

A 5cm RG178 coaxial pigtail cable with an IPEX 1 (MHF1) connector on one end and an RP-SMA female connector on the other, designed for low-loss RF signal routing in space-constrained IoT devices, embedded systems, and wireless modules.

Features

  • Compact RG178 Coax: Features a 5cm length of flexible RG178 cable, ideal for tight internal routing in miniaturized electronics and IoT sensor nodes.
  • IPEX 1 to RP-SMA Interface: Bridges common RF connections, linking board-mounted IPEX 1 antenna ports to external RP-SMA antennas or test equipment.
  • Low-Profile 11mm Connector: The short 11mm connector length minimizes protrusion, perfect for compact wireless devices and embedded system designs.
  • Versatile RF Prototyping Tool: Enables quick antenna swaps, custom antenna setups, and RF testing for Wi-Fi, Bluetooth, LoRa, and cellular modules during development.

Out of stock

Description

This RF pigtail cable provides a critical interface for wireless connectivity in compact designs. The IPEX 1 (also known as MHF1) connector is the industry-standard choice for connecting to onboard antenna pads on miniaturized Wi-Fi, Bluetooth, and cellular modules, such as those from Espressif, u-blox, and Quectel. The opposite end terminates in a standard RP-SMA female connector, allowing connection to a vast ecosystem of external antennas with RP-SMA male plugs for improved range and signal diversity.

Constructed with RG178 coaxial cable, this assembly offers a balance of small diameter, flexibility, and acceptable RF performance for short runs typical in consumer electronics and IoT end-devices. It is engineered to maintain 50-ohm impedance matching to minimize signal reflection and loss, ensuring reliable wireless data transmission for prototyping, testing, and final product integration.

Key Features

  • Precision RF Interface: Provides a reliable 50-ohm connection between internal module antenna ports and external antenna systems.
  • Space-Optimized Design: The short 5cm cable and low-profile connectors are tailored for densely packed PCB layouts and small-form-factor devices.
  • Enhanced Design Flexibility: Allows designers to relocate the antenna away from RF-interfering components or to an external enclosure for optimal signal reception.
  • Robust Connectivity: The IPEX 1 connector offers a secure click-lock connection to module pads, while the RP-SMA interface ensures a threaded, vibration-resistant connection.
  • Broad Module Compatibility: Compatible with a wide range of wireless modules and development boards featuring IPEX 1 antenna pads, including ESP32, nRF52, and cellular modems.

Applications

  • IoT Sensor Nodes: Connecting the IPEX port on compact LoRaWAN, BLE, or Wi-Fi modules to an external case-mounted antenna.
  • Embedded Wireless Systems: Routing signals from system-on-module (SoM) boards to panel-mount antennas in industrial telemetry gateways.
  • Prototyping & Testing: Serving as an adapter cable to connect development board RF outputs to spectrum analyzers or to test different antenna gains.
  • Wearable Electronics: Providing a flexible RF link in smartwatches, fitness trackers, or medical monitoring devices where space is at a premium.
  • Drone & UAV Communications: Interfacing flight controller telemetry radios (e.g., 915MHz, 2.4GHz) to lightweight external antennas.

Technical Specifications

Cable TypeRG178 Coaxial
Cable Length5 cm
Connector AIPEX 1 (MHF1) Male
Connector BRP-SMA Female
Connector Length11 mm
Impedance50 Ω (Typical for RG178)
Frequency RangeSuitable up to 6 GHz (Performance dependent on cable length and installation)
Primary UseInternal RF Interconnect / Antenna Pigtail

Frequently Asked Questions

What is the typical impedance of this RG178 pigtail cable, and why is it important?

This RG178 coaxial cable is designed for a characteristic impedance of 50 ohms, which is the standard for most commercial wireless communication systems like Wi-Fi, Bluetooth, cellular (4G/5G), and GPS. Impedance matching is critical to minimize signal reflection at the connector interfaces, ensuring maximum power transfer from your RF module to the antenna. A mismatch can lead to increased signal loss (VSWR), reduced effective range, and potential damage to sensitive transmitter power amplifiers over time.

Can I use this cable to connect an ESP32 development board to an external antenna?

Yes, if your specific ESP32 board or module features an IPEX 1 (MHF1) antenna connector pad. Many compact ESP32 modules, such as the ESP32-WROOM series, include this footprint. You would solder the board-side IPEX connector to these pads. The RP-SMA female end then allows you to connect any standard RP-SMA male antenna. This setup is ideal for moving the antenna outside an enclosure to improve Wi-Fi or Bluetooth range compared to the onboard PCB trace antenna.

How do I securely attach the IPEX 1 connector to my wireless module?

The IPEX 1 connector uses a click-lock mechanism. First, ensure the mating IPEX socket on your RF module is clean. Align the connector carefully with the socket, making sure the guide rails are oriented correctly. Gently press down until you hear or feel a distinct click, indicating the connector is fully seated and locked. To remove, you must use a dedicated IPEX removal tool or carefully lift the small metal locking tabs on the sides of the connector with a spudger—never pull directly on the cable, as this can damage the socket or cable termination.

Package Includes

  • 1 x 5cm IPEX 1 to RP-SMA Female Connector Cable (RG178)

Additional Information

Weight 0.005 kg
Dimensions 11 × 7.5 × 0.5 cm