| 摘要 |
A Micro-B USB electrical connector socket includes a metal shell, a plastic body and an array of formed and aligned discrete conductor leads encapsulated in the body. The leads include a power supply lead, a power return lead, and at least two data differential signal leads. Each lead has a connector pin portion at one end and a circuit connector portion at an opposite end. The plastic body encapsulates unexposed portions of the plurality of discrete conductor leads and includes an over-current circuit protection element such as a PPTC thermistor and an over-voltage circuit protection element such as a zener diode in thermal contact with the PPTC thermistor in order to accelerate heating thereof to a tripped state during a circuit protection event. The metal shell surrounds and mounts the plastic body to register the plastic body and connector pin portions in a predetermined alignment. The socket is fully compliant with size and configuration requirements of the Micro-B USB specification for sockets not having internal, thermally-coupled over-voltage and over-current protection elements.
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