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FAKRA and HSD connectors are very important in automotive electronic products. These products are widely suitable for the field of car networking, and can promote the safety and reliability level of car multimedia entertainment system and car electronic system to a new height. It is of great significance to the whole vehicle networking system related to vehicle system safety. At present, it has been widely used in Kable-X.
The so-called FAKRA is a joint of audio and antenna specifications for automobiles, which was jointly launched in 2000 by 12 European and American car factories headed by German car factories, with a maximum of 40pin. General FAKRA needs to meet the standards of American USCAR and german FAKRA. FAKRA has high performance, economical and effective radio frequency characteristics.
Development History
01
FAKRA is the abbreviation of FAchKReis Automobil (the automobile expert team is composed of engineers from BMW, Huber-Suhner, Rosenberger and other companies, and Huber-Suhner's Connector business and technology were merged into Rosenberger in 2010). At first, it was used for car radio antenna connection for BMW, but now FAKRA has become a universal standard RF connector in the automotive industry and is widely used in the industry.
Rosenberg released the first FAKRA product in 2000, which is based on the SMB interface of RF connector. The integration of plastic shell makes FAKRA product suitable for the rapid assembly of vehicle and ensures the stable connection.
The second generation FAKRA products optimized the design, defined the interface standard performance requirements, and wrote the requirements into ISO20860-1 issued in 2004. The second generation products are mainly finished by turning.
Rosenberg released the third generation FAKRA in 2007, which was cost optimized while maintaining the performance of the second generation. The third-generation products are mainly processed by stamping (there are also stretching methods in the industry), which is more suitable for full-automatic production.
02
Basic Introduction
2.1 Performance Parameters of Fakra Connector
According to the parameter requirements in IS0 20860.
Main electrical performance parameters: transmission frequency 0 ~ 4 GHz; Impedance is 50 ohms; Maximum carrying current 1A
Main mechanical performance parameters: lock retention force ≥100N and error prevention force ≥40N.
2.2 Common Applications
Wireless signal transmission: vehicle-mounted AM/FM; GPS; Networking (2~4GHz, including launch); Remote control, etc.
Video transmission application: Based on the outbreak of ADAS, it is mainly used in cameras.
2.3 Related Standards
Design: ISO20860;; USCAR18
Verification standard: LV214;; USCAR2; USCAR17
2.4 Adapting Cable
Commonly used cable model: RG174; RTK 031; RG59; RG179; RG58
2.5 Waterproof Performance
The waterproof version of the wire harness connector can reach IPX7/IPX9K waterproof level at the connector mating interface.
Structure of FAKRA connector
03
3.1 Overall Structure of Connector at Board End and Wiring Harness End
The common FAKRA connector is composed of plastic shell, outer conductor, center conductor, insulator, crimping sleeve (only cable harness connector) and secondary lock (only harness connector).
3.2 Secondary Lock, Color Mechanical Error Prevention
Secondary lock: It can ensure that the terminal is installed in place and increase the retention of the terminal. Secondary locks are usually purple.
Color mechanical error prevention: there is a structural design on the mating interface of the connector to prevent wrong plug-in, and different error prevention structures have different color plastic shells. Rosenberg's FAKRA connector provides 14 kinds of error-proof coding.
Coding A: DAB (Digital Audio Broadcasting)/radio equipment without phantom support. The plastic shell is black in color.
Coding B: DAB/ radio equipment with phantom support. The color of plastic shell is white.
Coding C:GPS global (satellite) positioning system. The color of plastic shell is blue.
Coding D:GSM mobile phone global system for mobile communication. The color of plastic shell is grape purple.
Coding E: TV 1, CodingF: TV 2. The plastic shell colors are green and brown respectively.
Coding G: remote control/keyless entry system, plastic case is gray.
Coding H:GPS, the molded case is purple.
Coding I: radio controlled parking heating, and the plastic shell is beige.
Coding K: Wireless device with intermediate frequency (IF). The color of plastic shell is curry yellow.
Coding L, m, n: undefined. The plastic shell colors are: carmine, pink orange and pink green.
Coding Z: neutral number. The plastic shell is water blue.
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