As we all know, the use of connectors is very extensive in our lives, and even closely related to our life. The choice of connector materials for different application scenarios is also very different. The housing of the connector, as the main part of the entire connector, roughly determines the size and size of the connector. Next, this article will introduce 5 common connector plastic materials, which have very important technical knowledge, whether it is for buyers, engineers, or business, they all need to learn and understand technical knowledge.


　　Connector plastic materials generally include LCP, Nylon, PPS, PBT, PET

　　# LCP

　　LCP, liquid crystal polymer, is a material with very good electrical insulation properties. It can maintain its electrical properties at 200 to 300 degrees Celsius without being affected, and can reach a temperature of 316 degrees Celsius when used intermittently.

　　In addition, LCP has very strong corrosion resistance, and will not be corrosive in 90% acid or 50% alkaline environment.

　　LCP also has excellent thermal stability, heat resistance, and chemical resistance.

　　# Nylon

　　Nylon has good toughness, self-lubricity, chemical resistance and abrasion resistance.

　　PA6T has better toughness than PA9T, and its heat distortion temperature is 290 degrees Celsius, which is very suitable for SMT connectors.

　　PA46 product has high strength and good toughness, and it is not easy to produce cracks.

　　# PPS

　　Advantages: better rigidity, low water absorption, good dimensional stability, HDT 260°C, good flame retardancy.

　　Disadvantages: slow crystallization speed, burrs are easy to produce, and toughness is poor


　　# PBT

　　PBT is a crystalline engineering plastic. It has a clear melting point (215-235°C). In the molten state, it has low viscosity, good fluidity, low hygroscopicity, and can maintain good electrical stability under humid and high temperature conditions.

　　Disadvantages: Large shrinkage after molding.

　　Because the heat resistance is not high enough, it cannot be used for SMT, but can only be used for DIP type connectors (such as D-SUB 25P, DR-9P, etc.)

　　# PET

　　crystalline engineering plastic, melting point 245-260°C. Good mechanical properties, electrical properties, and solvent resistance

　　Disadvantages: Anisotropy, large shrinkage. The crystallization speed is slow. The drying requirements are higher.

　　The above are 5 common connector plastic materials. Through comprehensive analysis, we can conclude that the principle of which material to choose is:

　　1. Good fluidity (such as LCP, nylon, etc., thin-walled products can be prepared)

　　2. High strength, good impact performance

　　3. High temperature resistance (especially SMT)

　　4. Excellent electrical properties (high resistance, low dielectric loss)

　　5. Short molding cycle (improve production efficiency and reduce costs)

　　6. If the performance meets the conditions, the price has an advantage


　　The five common connector plastic materials are introduced above. I think everyone knows it. As a connector sales platform, renhoteIC.com is also very strict in the choice of manufacturer materials. We only choose high-quality, guaranteed and safe materials. In the selection of suppliers, the superior and the inferior will survive the survival of the fittest in the selection of suppliers, and the supply chain management will be continuously improved to ensure quality. You can purchase with confidence.