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Terminal blocks are a product used within electronic systems, enclosures, and more, to transfer electrical power from a busbar, or from one electrical circuit to another. They are often used to connect low voltage wiring, such as with alarm systems, sensors, and more. Terminal blocks are made for different kinds of applications, such as Wire-To-Board terminals, and Wire-To-Wire terminals. This article will discuss the Wire-To-Board terminal blocks, their application fields, and their working principles.

Wire-To-Board terminal blocks are electrically insulated terminal blocks designed to mount onto PCBs for connecting contacts or wires. They can be further categorized into board-to-lead and board-to-wire connection types. They are generally made of plastics or thermoplastics such as Polyphenylene sulfide, Phenolic, Polyamide, Nylon, Polyester, Acetal and Vinyl.

Wire-To-Board terminal blocks\' application field includes entertainment systems, domestic appliances, automotive, power supplies, computers and peripherals, automotive and control systems, and instrumentation. They are used for connecting wires to the PCBs. This helps protect the wire and its insulation. Most board-to-wire connection types require soldering, while board-to-lead types may use standard assembly techniques.

The working principle behind the Wire-To-Board terminal blocks is that they are used to securely connect a PCB’s surface mount pads to the contacts of the connector block. The leads of the terminal block are inserted into the PCB’s plated through holes. Soldering is generally completed on the lead after insertion into the board. This forms a very reliable electrical and mechanical connection. Special contact design in terminal blocks may be used to reduce electrical contact resistance or to increase resistance to vibration and shock.

In addition, terminal blocks can be engineered for specific applications. For example, spring-clamp terminals are designed for easy and fast wire installations. The spring provides a secure connection with minimum force and pressure. Similarly, screw type terminal blocks provide a secure connection in configurations that can be quickly and easily disassembled.

Wire-To-Board terminal blocks offer many advantages over traditional wiring. They are space efficient – taking less mounting space on a PCB. They offer higher reliability than soldered connections and can handle much higher frequencies. They also reduce installation and maintenance costs and are very easy to use. Terminals are safer to work with since the connection is always insulated until the terminal block is actually mounted.

Wire-To-Board terminal blocks are versatile, reliable and easy-to-use. They are used in a wide range of applications and are designed to handle different electrical currents and signals. Their size, ease of use, and cost effectiveness make them ideal for small projects, as well as large commercial applications, where reliable connections and high-performance requirements are necessary.

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