An RF connector includes a conductive pin for carrying an RF signal. The conductive pin has a first longitudinal end that serves to interface with a male RF connector to receive the RF signal. The pin also includes a second longitudinal end for connecting with a printed circuit board (PCB). The second longitudinal end may be tapered, and the pin may have a groove formed above the tapered end. A housing encircles the conductive pin. The housing is shaped and sized to accept the male RF connector. A grounding element may be positioned on the bottom of the housing. The grounding element is to contact the PCB when the connector is connected to the PCB. The grounding element may be ring-shaped and soldered to the housing or epoxied to the housing.

A dual in-line memory module (DIMM) connector system is provided. The DIMM connector system includes a motherboard, a DIMM card and a connector by which the DIMM card is coupled with the motherboard. The motherboard includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, ground pads disposed proximate to signal pads, signal vias connected to distal edges of signal pads and shared antipads. The DIMM card includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, signal vias connected to distal edges of signal pads and shared antipads for respective pairs of signal vias.

An electrical connector for electrically connecting a chip module and a circuit board, includes an insulating body, multiple terminals, and multiple solders. The insulating body includes multiple receiving holes running therethrough and multiple resisting portions. The terminals are respectively located in the receiving holes. One end of each terminal is provided with a soldering portion, the soldering portion has a soldering surface, and the soldering surface is perpendicular to a surface of the circuit board. Left and right sides of the solder urge the soldering surface and the resisting portion respectively, a lower side of the solder is soldered onto the circuit board by reflow soldering, and the solder is soldered to the soldering surface by laser.

A dual in-line memory module (DIMM) connector system is provided. The DIMM connector system includes a motherboard, a DIMM card and a connector by which the DIMM card is coupled with the motherboard. The motherboard includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, ground pads disposed proximate to signal pads, signal vias connected to distal edges of signal pads and shared antipads. The DIMM card includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, signal vias connected to distal edges of signal pads and shared antipads for respective pairs of signal vias.

A dual in-line memory module (DIMM) connector system is provided. The DIMM connector system includes a motherboard, a DIMM card and a connector by which the DIMM card is coupled with the motherboard. The motherboard includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, ground pads disposed proximate to signal pads, signal vias connected to distal edges of signal pads and shared antipads. The DIMM card includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, signal vias connected to distal edges of signal pads and shared antipads for respective pairs of signal vias.

A circuit board assembly and an electronic device. The circuit board assembly includes: a circuit board to which a first board-to-board connector and a second board-to-board connector are mounted; a first bracket, where the first bracket is mounted on the circuit board, the first bracket is located on a side of the first board-to-board connector away from the circuit board; a second bracket, where the second bracket is mounted on the circuit board, and the second bracket is located on a side of the second board-to-board connector away from the circuit board, and the second bracket is disposed neighboring to the first bracket and the second bracket is provided with a tongue insert; and a fixing member, where the fixing member is connected to the circuit board and the fixing member is provided with a slot.