1894833

Voltage - UL:	125V
Insulation Height:	0.862" (21.89mm)
Contact Tail Length:	0.150" (3.81mm)
Housing Material:	Polyamide (PA), Nylon
Contact Material:	--
Wire Strip Length:	--
Torque - Screw:	--
Screw Size:	--
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	--
Contact Mating Finish:	Tin
Operating Temperature:	--
Color:	Green
Wire Gauge or Range - mm²:	--
Wire Gauge or Range - AWG:	--
Series:	MICRO-COMBICON MCD
Current - UL:	4A
Voltage - IEC:	320V
Current - IEC:	4A
Mounting Type:	Through Hole
Termination Style:	Solder
Plug Wire Entry:	--
Header Orientation:	90°, Right Angle
Pitch:	0.098" (2.50mm)
Number of Levels:	2
Positions Per Level:	5
Number of Positions:	10
Type:	Header, Male Pins, Shrouded (4 Side)
Part Status:	Active
Packaging:	Bulk

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Terminal blocks - headers, plugs and sockets are components used in almost any electronic system. Originally introduced for panel-mounting purposes, terminal blocks have become more and more commonplace in a variety of applications. To better understand their use and the scope of possible applications, this article will analyze the fundamental principles behind them as well as some of their most popular applications. The main purpose of terminal blocks, be it headers, plugs or sockets, is the electrical contact of two or more points. This contact is usually established with the help of a screw/screwdriver connection, pin connectors or spring-loaded lever systems. This provides a simple way for any user to connect circuits without the need of advanced knowledge. Most terminal blocks are designed to accommodate different wire gauges: some of the more recent designs are fed by spade connectors, which fit different cable diameters without compromising electrical contact. Connections are usually bridged with the help of short lengths of bare wire (in the case of screw/screwdriver connectors) or with special contact pieces (clam-shells in the case of pin-to-pin connectors).The materials used to make terminal blocks include polypropylene, nylon, polyethylene, polybutylene, polycarbonate, brass and steel alloys. Polypropylene is the most common choice and it provides a good combination of resilience and temperature tolerance. Nylon is commonly used for sockets with higher contact ratings. Polyethylene is favored for its durability and chemical resistance, while polybutylene and Polycarbonate are primarily used for specialized applications requiring better insulation performance.In terms of applications, several industries rely heavily on terminal blocks. Telecommunications usage is the most common, where power distribution and voice connection are essential. Automotive applications are also common, where the reliability of connections is essential for the functioning of safety-critical components. Custom-design terminal blocks are also found in aerospace applications, as is the case with the wiring systems of passenger and cargo aircraft, where failure of any connection can spell disaster.Industrial automation is another area where terminal blocks are extensively used, from the actuators involved in the control of industrial processes to the components used in data acquisition systems, such as industrial Ethernet or Fieldbus networks. In such applications, the use of terminal blocks is deemed to minimize connection error and provide a secure, reliable connection.Terminal blocks are also used in Railway and Aviation applications. In the former case, the need for reliable connection and frequent assembly and disassembly of contact pieces has made the use of terminal blocks something that is remarkable for its simplicity and effectiveness. The same can be said for aviation, where hand-held and automated tools play a part in the wires’ assembly, maintenance and disassembly. Finally, another notable area of usage is energy distribution, where terminal blocks are used for electricity distribution networks, such as street lighting, lighting systems for construction works, railway signaling systems and installations and also for residential electricity grids. To summarize, terminal blocks - headers, plugs and sockets are components used in nearly all industries for the purpose of securely and reliably connecting two or more points. Their design and materials provide reliable electrical contact – while their use enables even the least experienced personnel to perform connections with minimal effort. Their use spans from Telecommunications, Automotive, Aerospace, Industrial Automation and PCBs, Energy Distribution and others. Whether they’re used in a critical situation, like Aircraft Wiring, or for operations where down time can be avoided – terminal blocks serve to provide a secure, efficient connection.

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