What are the types of RJ45 connectors?

I.What are the types of RJ45 connectors? Currently a commonly used type of RJ connector is the RJ45 connector for ethernet connection, 8P8C, can be connected to 4 pairs of twisted-pair cable, 12mm wide, wider than the RJ11 series.RJ45 connector is also sometimes used for telephone or RS232 connection, but also used to pass the VGA video signal. Mention of RJ11 know that this is a universal telephone connector, in fact, it is the earliest is the United States so and so company developed a connector common name, the original name is WExW, the shape of the 6-pin, WE6W use all 6 contacts, and WE2W only use the middle of the two pins, and later became one of the RJ series connectors.RJ11 and RJ14, RJ25 for the same series, the size is the same, both are RJ11 and RJ14, RJ25 for the same series, the same size, are 9.5mm wide, just the number of contacts is different. RJ11 only a pair of contacts in the middle, you can connect a pair of wires, said 6P2C (six position, two conductor); RJ14 use the middle of the four contacts, you can connect two pairs of wires, said 6P4C; RJ5 to use all the six contacts, you can connect three pairs of wires, said 6P6C. sometimes This connector can also be used to provide low-voltage low-power power (AC or DC), commonly used PIN2 and PIN5 (black and yellow wires). RJ11 is generally used as a generic term for this 9.5mm series, using RJ11-6P2C, RJ11-6P4C and RJ11-6P6C to distinguish the number of contacts respectively. There is also a connector used in telephony to connect the handset to the handle, called 4P4C (also known as RJ22, and with RJ9, RJ10 form a series), with 4 contacts, 7.5mm wide, smaller than the RJ11 feet. There is also an 8P8C connector called RJ61 for connecting twisted pairs. Because of this line sequence in the 3rd and 4th pairs of twisted-pair wires in the two wires farther apart, will cause greater crosstalk, is not suitable for Ethernet, such as the transmission of high-frequency signals. There is also an RJ48 connector, also 8P8C, which can be used to connect 4 pairs of T1 data links, each pair of wires can transmit time division multiplexed 23 voice paths.

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