Design requirements for thimble connectors

　　PogoPin connector is mainly composed of needle shaft, spring, ceramic bead, needle tube, plastic and CAP6. Let's follow Tyco Hanze to understand the shape requirements of the contact terminal of the pogopin connector.

　　1. The design requirements for the end of the contact: it is a non-standard contact, which should be designed in accordance with the cable requirements of the whole machine. First, determine the plug-in end size, product installation form, appearance mode, and cable specifications. When the cable is difficult to determine, the principle to follow is to design the wiring holes according to the number of contacts, and the wiring holes can meet the requirements of large wire gauge wires. The ratio of the core diameter to the inner diameter of the solder cup is generally 0.5-0.7; when wiring, the design principle is that the diameter of the connecting hole between the cable core and the contact is appropriate, and the ratio of the core diameter to the inner diameter of the soldering hole is usually 0.6-0.8.

　　2. Contact terminal form requirements: In the thimble connector, the contact is an important part of the connector, which is mainly responsible for signal transmission. In the design of the connector, the plug-in end and the tail end constitute the contact. The insertion end is generally composed of a flexible part and a rigid part to ensure the reliability of the contact between the connector plug and the socket; the end of the contact is used for the cable connection to realize the cable connection between the equipment and the interconnection between the printed boards Or the interconnection between the cable and the board. The terminal form of the connector end has welding wire type, crimping wire type and insulation piercing type (IDC, solderless winding type), which are used on printed boards. The contact terminal forms have direct welding, bending welding, surface mounting and solderless press-in.

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