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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks, also known as headers, plugs and sockets, are connecting and disconnecting components used in the electronics industry. They are commonly used to provide electrical connectivity between two or more circuit board components. They provide a method of providing an electrical connection or disconnection without having to remove or replace the component.

Terminal blocks come in a variety of shapes and sizes and can be used in applications from board-level to system-level. The most common types of terminal blocks are side-entry terminal blocks, plug-and-play terminal blocks, angled terminal blocks, and jumperless terminal blocks.

Side-entry Terminal Blocks

Side-entry terminal blocks are used when a device’s components need to be connected to a circuit board. The terminal block is mounted to the edge of the board and the device is connected to the block via its solder points. These blocks are typically used for test boards, terminal boards, and signal boards. Side-entry terminal blocks are available in different forms, including 0.1” and 0.3” inch versions, with both male and female pins.

Plug-and-play Terminal Blocks

Plug-and-play terminal blocks are designed to provide an easily removable method of connecting and disconnecting two pieces of equipment. These terminal blocks are also used to connect equipment to a circuit board. Plug-and-play terminal blocks come in a variety of styles, such as surface mount, through-hole, and right-angle terminal blocks, and are available in different voltage and current ratings.

Angled Terminal Blocks

Angled terminal blocks are terminal blocks that are designed to provide an easily removable method of connecting and disconnecting two pieces of equipment. These terminal blocks are available in right-angle and slant-type designs, which are typically used in applications where space is limited.

Jumperless Terminal Blocks

Jumperless terminal blocks are used when two components require an electrical connection but cannot be directly connected due to different voltages, currents, or frequencies. The terminal block provides a safe and secure connection, which can be easily modified or changed. Jumperless terminal blocks are typically available in single, dual, and triple-pole configurations.

In summary, terminal blocks provide a reliable, easy-to-use method of connecting or disconnecting components from a circuit board. Different types of terminal blocks are available to suit a variety of applications, from test boards and terminal boards to signal boards and system-level applications.