连接器的分类，选型，以及基本特性

时间：07-31 来源：硬件十万个为什么点击：

第一部分、连接器的分类

背板连接器

扁平电缆连接器

RJ是Registered Jack的缩写，意思是"注册的插座"。在FCC（美国联邦通信委员会标准和规章）中RJ是描述公用电信网络的接口，计算机网络的RJ45是标准8位模块化接口的俗称。

Code	Connector	Usage
RJA1X	225A adapter	Connector for a modular plug to a four-prong jack
RJA2X	267A adapter	Connector for splitting one modular jack to two modular jacks
RJA3X	224A adapter	Connector for adapting a modular plug to a 12-prong jack
RJ2MB	50-pin	2–12 telephone lines with make-busy arrangement
RJ11(C/W)	6P2C	Establishes a bridged connection for one telephone line (6P4C if power on second pair)
RJ12(C/W)	6P6C	Establishes a bridged connection for one telephone line with key telephone system control ahead of line circuit
RJ13(C/W)	6P4C	Similar to RJ12, but behind the line circuit
RJ14(C/W)	6P4C	For two telephone lines (6P6C if power on third pair)
RJ15C	3-pin weatherproof	For one telephone line for boats in marinas
RJ18(C/W)	6P6C	For one telephone line with make-busy arrangement
RJ21X	50-pin	Multiple (up to 25) line bridged T/R configuration
RJ25(C/W)	6P6C	For three telephone lines
RJ26X	50-pin	For multiple data lines, universal
RJ27X	50-pin	For multiple data lines, programmed
RJ31X	8P8C	Allows an alarm system to seize the telephone line to make an outgoing call during an alarm. Jack is placed closer to the network interface than all other equipment. Only 4 conductors are used.
RJ32X	8P8C	Like RJ31X, this wiring provides a series tip and ring connection through the connecting block, but is used when the customer premises equipment is connected in series with a single station, such as an automatic dialer.
RJ33X	8P8C	This wiring provides a series tip and ring connection of a KTS line ahead of the line circuit because the registered equipment requires CO/PBX ringing and a bridged connection of the A and A1 lead from behind the line circuit. Tip and ring are the only leads opened when the CPE plug is inserted. Typical usage is for customer-provided automatic dialers and call restrictors.
RJ34X	8P8C	Similar to RJ33X, but all leads are connected behind the line circuit.
RJ35X	8P8C	This arrangement provides a series tip and ring connection to whatever line has been selected in a key telephone set plus a bridged A and A1 lead.
RJ38X	8P4C	Similar to RJ31X, with a continuity circuit. If the plug is disconnected from the jack, shorting bars allow the phone circuit to continue to the site phones. Only 4 conductors are used.
RJ41S	8P8C, keyed	For one data line, universal (fixed loop loss and programmed)
RJ45S	8P8C, keyed	For one data line, with programming resistor
RJ48C	8P4C	For four-wire data line (DSX-1)
RJ48S	8P4C, keyed	For four-wire data line (DDS)
RJ48X	8P4C with shorting bar	For four-wire data line (DS1)
RJ49C	8P8C	For ISDN BRI via NT1
RJ61X	8P8C	For four telephone lines
RJ71C	50-pin	12 line series connection using 50-pin connector (with bridging adapter) ahead of customer equipment. Mostly used for call sequencer equipment.