ARJ-202

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Modular connectors are a significant part of any electrical system, providing a method of connecting two or more circuits together, without the need for hard wiring. Due to their convenience and affordability, these connectors are used widely in a variety of applications, including telecom, data networks, industrial automation, computers, and consumer electronics. One type of modular connector is a jack with magnetics, such as the ARJ-202.

The ARJ-202 is a 2-pair RJ45 Ethernet connector with integral magnetics, designed to reduce EMI/RFI and other noise, as well as to provide overcurrent protection for connected systems. This jack is designed for use as the interface between a circuit card and a shielded or non-shielded RJ45-type Ethernet cable. It is suitable for a variety of applications, including computers, routers, NIC cards, high-end audio-video equipment, and digital home appliances.

The ARJ-202 is made of an injection-molded high impact thermoplastic, which is UL 94V-0 rated for reliability and safety. It is equipped with two pole-and-sleeve, male connectors, made of phosphor bronze with a gold flash finish. The contact resistance is specified to be 20 mΩ maximum, with an insulation resistance of 5000 mΩ minimum, and the pin life is tested up to 2500 cycles. The jack also features two sets of L8 LC and two sets of L3 LC magnetics, designed to prevent electrostatic discharge damage (ESD).

The ARJ-202 works by providing an electrical connection between two systems, while reducing the risk of electrostatic discharge damage. When an RJ45 cable is plugged into the connector, the magnetics inside the jack detect the incoming signal and block out any outside electrical noise. This ensures that the signal is of the highest quality and that the two systems are securely connected. The connector also features overcurrent protection, which serves to protect the two systems from power surges and other potential sources of damage.

The ARJ-202 is an ideal choice for a variety of applications requiring reliable and safe connectivity. Its integral magnetics and overcurrent protection make it well-suited for applications involving digital home appliances, computers, routers, NIC cards, and high-end audio-video equipment. Due to its robust design and its reliable performance, the ARJ-202 is an attractive choice for designers seeking a modular connector with reliable performance and a low cost.

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