The **CONREVSMA012-R178** is a specialized Radio Frequency (RF) connector manufactured by **Linx Technologies** (now part of TE Connectivity). It is a Reverse Polarity SMA (RP-SMA) female connector designed specifically for cable mounting. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Connector Type** | RP-SMA Female (Jack) | | **Body Style** | Straight | | **Cable Type** | RG-178, RG-196 (Coaxial) | | **Impedance** | 50 Ohms | | **Frequency Range** | 0 to 12.4 GHz | | **Mounting Type** | Cable Mount (Crimp/Solder) | | **Plating** | Gold (Center Contact), Gold (Body) | --- ### 2. Physical Design and Construction The "R178" in the part number indicates its compatibility with **RG-178** coaxial cables, which are thin, high-temperature cables often used in compact electronic assemblies. * **Reverse Polarity (RP):** Unlike a standard SMA female (which has a socket/hole), an RP-SMA female has a **male-style center pin**. This design was originally popularized by Wi-Fi equipment manufacturers to comply with FCC regulations to prevent consumers from connecting high-gain professional antennas. * **Body Material:** Typically machined brass with gold plating for superior corrosion resistance and electrical conductivity. * **Insulation:** Uses PTFE (Teflon) as the dielectric material to maintain consistent impedance and handle high temperatures during soldering. --- ### 3. Connection Interface To properly integrate this part into a system, you must understand how it attaches to both the cable and the mating connector: * **Cable Attachment:** * **Center Contact:** The center pin is usually soldered onto the inner conductor of the RG-178 cable. * **Outer Shield:** The outer braid of the cable is secured to the connector body using a **crimp ferrule**. * **Mating:** It mates with any standard **RP-SMA Male** connector (which features a threaded nut and a center socket). --- ### 4. Common Applications Due to its small footprint and high-frequency capabilities, this connector is found in: 1. **Wi-Fi Routers:** Connecting internal PCBA to external antennas. 2. **IoT Modules:** Providing an external antenna port for LoRa, Sigfox, or Zigbee devices. 3. **GPS/GNSS:** High-precision timing and location hardware. 4. **Drones/UAVs:** Lightweight RF telemetry links. ---