1995541

Series:	COMBICON PST
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Header, Male Pins, Unshrouded
Number of Positions:	9
Positions Per Level:	9
Number of Levels:	1
Pitch:	0.138" (3.50mm)
Header Orientation:	Vertical
Plug Wire Entry:	--
Termination Style:	Solder
Mounting Type:	Through Hole
Current - IEC:	8A
Voltage - IEC:	250V
Current - UL:	10A
Voltage - UL:	300V
Wire Gauge or Range - AWG:	--
Wire Gauge or Range - mm²:	--
Color:	Black
Operating Temperature:	--
Contact Mating Finish:	Tin
Features:	Pick and Place Cap
Material Flammability Rating:	UL94 V-0
Ingress Protection:	--
Screw Size:	--
Torque - Screw:	--
Wire Strip Length:	--
Contact Material:	--
Housing Material:	Polyamide (PA), Nylon
Contact Tail Length:	0.150" (3.81mm)
Insulation Height:	0.079" (2.00mm)

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Terminal blocks, also known as ‘headers’, ‘plugs’ and ‘sockets’, are widely used in a variety of applications from a simple switch connection to supplying power to a device, such as a motor. 1995541 is a specific type of product and is used to provide an efficient way of making electrical connections in circuit applications. To understand how these blocks work, it’s important that the individual components of terminal blocks, as well as their working principle, are understood.

Terminal Block Components

The basic components of a terminal block are composed of at least two sections: the insulating material or base material, where the electrical connections are made, and the metal contact elements, which are used to join the electrical connections. These contact elements, known as ‘pins’ or ‘leads’, are typically made of either copper or brass and are designed to provide a secure connection. The pins are inserted through the holes in the base material and are soldered or crimped onto the electrical wires or the metal contact elements inside the block. The insulating material can be made from a variety of materials, such as plastic, ceramic, and glass. Plastic is the most common, and it is both lightweight and cost-effective, but it also has the tendency to become brittle over time. Depending on the application, some terminals also have a metal outer casing, which provides additional protection for the inner parts of the block and helps to reduce the level of electromagnetic interference. In addition to the pins, terminal blocks also include components such as terminals, interconnects, busbars, and junction boxes. Terminals are the points where electrical wires are joined, and they are typically made of either copper or brass and are designed to provide a secure connection. Interconnects are used to create connections between two terminals, while busbars are used to connect multiple terminals. Finally, junction boxes are used to house multiple terminals and facilitate the wiring of multiple circuits. Terminal blocks also come with accessories, such as terminal covers, terminal protectors, and terminal markers. Terminal covers are used to protect the contacts and help prevent accidental short circuits, while terminal protectors are designed to protect the pins from temperature fluctuations and corrosion. Terminal markers are used to label the terminals, which makes it easier to identify which terminals are connected and which ones are not.

Terminal Blocks Working Principle

The working principle of a terminal block is fairly simple. When a current is applied to the terminals, an electrical contact is created between the two metal contact elements. This contact can be used to either provide an electrical connection or power to a device, or to break the connection between two devices. For example, when a switch is connected to the terminals, the contact elements will provide a path for the current to flow through, thus activating the switch. Terminal blocks are also used for applications such as over-current protection and surge protection, as they are able to provide resistance to high currents and protect sensitive electronics from damage. Additionally, terminal blocks can be used to regulate current flow, as they are able to adjust the voltage and current output of a circuit. Finally, terminal blocks can also be used to provide insulation between two circuits, thus preventing short circuits and damage to the equipment.

The advantages of using terminal blocks in applications such as power distribution are clear. They are relatively inexpensive, efficient, and reliable solutions that provide electrical connections between two or more circuits. In addition, they are also great for applications that require over-current protection, surge protection, and adjustable voltage and current outputs. By understanding the components and working principle of terminal blocks, you will be able to make the most out of your project and make sure that you are getting the most from your electrical connections.

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