14120215001000

Wire Gauge or Range - AWG:	--
Insulation Height:	0.362" (9.20mm)
Contact Tail Length:	--
Housing Material:	Polyamide (PA), Nylon, Polyphthalamide (PPA)
Contact Material:	Copper Alloy
Wire Strip Length:	--
Torque - Screw:	--
Screw Size:	--
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	--
Contact Mating Finish:	Tin
Operating Temperature:	-40°C ~ 110°C
Color:	Black
Wire Gauge or Range - mm²:	--
Series:	har-flexicon®
Voltage - UL:	300V
Current - UL:	11A
Current - IEC:	--
Mounting Type:	Through Hole
Termination Style:	Solder
Plug Wire Entry:	--
Header Orientation:	Vertical
Pitch:	0.150" (3.81mm)
Number of Levels:	1
Positions Per Level:	2
Number of Positions:	2
Type:	Header, Male Pins, Shrouded (4 Side)
Part Status:	Active
Packaging:	Bulk

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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks make efficient and reliable electrical connections between several points by acting as intermediate connections between devices. While there are a variety of terminal blocks available, the three most common are headers, plugs, and sockets. This article provides an overview of the working principle, application field, and the differences between terminal blocks.

Working Principle

Terminal blocks, or terminal boards, are a set of metal contacts connected in sequence between two electrical circuits by a printed circuit board. Each contact is arranged in a series of squares of varying size, depending on their application, and has individual contact points on the back. The contacts make electrical contact when the terminals are forced together. This makes the terminal block highly beneficial in circuits and wiring connections.

Application Field

Terminal blocks are incredibly versatile and can be used in a variety of applications, from terminal boards to mixed printed circuit board layouts. They have the ability to join together long runs of wire bringing signals close to the board, joining multiple ground or low power signals, and to make firm and permanent connections. They are also used when a large number of parameters need to be tested, in which case the terminal block is modified to connect the connection points to a testing paddles.

Headers

Terminal board headers, often called terminal board strips, are probably the most popular type of terminal blocks. They have a wide range of uses, from connecting two devices that have different ports, to connecting parts of the same device. They have an array of holes along the length of the header, allowing multiple wires or connections to be wired into the same block. Headers are often used when a large number of exposed connections are being made, because the holes on the board can easily be accessed.

Plugs

A plug-style terminal block is generally used to join two devices; they are designed to fit in only one direction into a matching female connector. These plugs are a simple and cost-effective way to join two circuits together, as they are easy to install, adjust, and repair without the need for tools. The plug type terminal also eliminates the need for hard wiring, which in many cases improves performance. The plug type terminal block also reduces the labor cost, as the fitting can be placed quickly and easily without the need for soldering or crimping.

Sockets

Sockets are probably the most common type of terminal block, as they provide a convenient and efficient solution when multiple signal or power points are required. The socket type terminal block helps to connect two circuits together by combining all of the contacts into a single unit. This is beneficial when connecting them to multiple circuits, as the connections can be closely spaced. The socket type terminal also helps reduce the number of hitches in a circuit, as each connection is physically separate. This reduces the risk of any faulty connections, which can potentially lead to a circuit breakdown.

Conclusion

Terminal blocks are versatile and reliable electrical connections that can be used efficiently in any wiring project. Each type of block has its own characteristics, and their application typically depends on the requirements of the project. Headers, plugs, and sockets are the three most common types of terminals, and each one provides a unique and reliable connection.

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Part Number	Manufacturer	Price	Quantity	Description