FX4B2-80S-1.27SV(71)

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What is the application field and working principle of a FX4B2-80S-1.27SV(71) and what type of Rectangular Connectors does it belong to? This small connectivity device is often used for small mezzanine (board to board) connections, and it is commonly referred to as an edge type rectangular connector.

The FX4B2-80S-1.27SV(71) is a two-piece interconnect arrangement of two high precision stamped and formed contact tabs that make up the connector terminal. These tabs are held in place in the terminal with two teeth and two locking pins. Although there are two contact tabs, each element consists of a single element joined between the two contact pads enabling the connection to be quickly and easily established with just a single connector.

The terminal has a two-piece plastic housing and is available in two popular sizes, one with five (5) terminals, the other with eight (8) terminals. The housing has detents to enable it to be securely mounted into the mating connector while providing low insertion and extraction forces. The number of detents in the housing varies with the size of the housing but generally speaking, they range from four (4) to eight (8). The two contact tabs are precision machined and form the terminal cavity when they mate together. Control keys and contact features are also machined and form the mating position.

The stack-up of different terminals within the same connector is determined by the R-Height of the terminal. R-Height measures the distance from the top of the terminal to the bottom of its male-end. The terminals within the same connector can be arranged in a variety of different orders, like four-level, two-level, and single-level.

In order to ensure high-quality connections, a two-piece metal clip slides over the male connector end and locks the mating terminals into place. Although single-level terminals can be implemented in this type of connector, two-level terminals are generally preferred because of their ability to accommodate a greater number of contacts with a simple configuration. Finally, the mating terminations can be broken and re-seated if the need arises.

The FX4B2-80S-1.27SV(71) is a robust and reliable solution to board-to-board connection problems. The terminal is designed to provide a secure connection between two PCBs while offering a low profile mounting solution with minimal insertion and extraction forces. It is part of the family of rectangular connectors known as “Edge Type”, and is suitable for use in a range of applications where electrical connections must be made safely and securely.

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