12/14/2009

Connector

1, connectors, basic knowledge 

Connector from the transmission of signals to points, can be divided into electrical connectors(MIL-C-26482) and optical connectors, here only for the electrical connectors as the help content.
Connector consists of: from the material terms, including metal and plastic.
Connector construction: the connector of at least two components: one is a conductor (metal) and the other part of the insulating material (plastic); There is also a mask with the metal shell.
Metal Material selection:
Metal material selected points:
1. Mechanical life
Connector mechanical life is plug life, usually defined as 500 to 1000 times. In achieving this required mechanical life, the connector contact resistance, Insulation resistance and voltage and other indicators should not exceed the specified value.
2. Electrical Performance
Rated voltage Rated current contact resistance, etc.
3. Environmental parameters
Environmental parameters are mainly temperature, humidity, temperature, abrupt changes in atmospheric pressure and corrosive environment. Connector in the use and storage, transportation environment in which its performance has a significant impact, it must be based on the actual environmental conditions, selection of the appropriate connector material.
4. Termination method
Termination method refers to the connector contact with the wire or cable connections.
Welding crimping wrap punctured screw

Plastic material selection
Plastic materials description: (my company commonly used plastic materials PA66, PBT, LCP, PVC, etc.)
High Performance Plastics
1, PEI: polyetherimide 2, PEEK: polyether ketone 3, PES: polyphenylene ether sulfone 4, PPS: polyphenylene sulfide 5, PAR: Polyaryl grease 6, PSU: Polysulfone 7, LCP: Liquid Crystal Polymer 8, HTN: high-temperature nylon (PA) 9, PI: Polyimide
Plastics
1, PET: Polyethylene terephthalate ethylene resin 2, M-PPO: modified polyphenylene ether 3, PC: polycarbonate 4, PBT: poly terephthalic acid, succinic ester 5, NYION: Nylon (PA)
Commodity plastics
ABS: acrylonitrile, butadiene, styrene copolymer 2, POM: polyoxymethylene 3, TPE: thermoplastic polyester elastomer 4, PS: polystyrene 5, PP: polypropylene 6, PVC: polyvinyl chloride 7, HDPE: high-density polyethylene 8, LDTE: low-density polyethylene 9, PMMA: poly methyl methacrylate (Acrylic) 10, SAN: styrene - acrylonitrile copolymer 11, SMA: Styrene Ma to anhydride

Plastic material selection points:
(1) flame properties
(2) Mechanical Properties
(3) material properties and Analysis
(4) electrical properties
(5) Weathering the nature
(6) thermal properties

(7) Appearance

2009-12-14 下午 6:56:04

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