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Wire spring hole rectangular filter connector
Abstract：With the development and advancement of technology, modern military and civilian electronic devices are increasingly sophisticated
With the development and advancement of technology, modern military and civilian electronic devices are increasingly sophisticated, complex and multifunctional, and various electronic devices are always subject to electromagnetic interference and radio frequency interference (EMI/RFI). In the case of a system, various electromagnetic interferences are most severe at the interface. It can conduct or radiate EMI outside the system to the inside of the system, and can conduct or radiate EMI inside the system to the outside of the system. Therefore, the connector at the interface plays an extremely important role in resisting electromagnetic interference. In order to adapt to this new situation and meet the user's requirements, we have developed a kind of wire spring hole rectangular filter connector for signal transmission of a certain control system, and at the same time play the role of anti-electromagnetic interference. 2Performance requirements 2.1 Reasonable, compact, easy to use interface, installation size and arrangement of contact parts, etc. The interchangeable dimensions conform to the requirements of GJB142A-94 25-core and No. 3 housings, strong versatility, small size and light weight. Easy to install and use. 2.2 Main technical performance indicators This filter connector is mainly used for military equipment with high requirements, so it has high requirements for performance indicators. The environmental resistance technical indicators are in line with GJB142A-94 "General specifications for small rectangular electrical connectors for cabinet positioning. 》 (equivalent to MIL-C24308B (2) "General Specification for Small Rectangular Case Positioning Cabinet Electrical Connector"), some indicators are higher than its specifications, and the insertion loss is in accordance with GJB1308-91 "Filtered Electrical Connector Requirements" (etc. Effective in MIL-STD-2120 "Communication Electromagnetic Interference Connector" (see Table 1) Table 1 GJB1308-91 Table 1 G-band specified segment frequency filter network type capacitance / nF cutoff frequency / MHz ( 3dBmax) minimum attenuation / dB (25 ° C, no load) minimum maximum test frequency
