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FAKRA (Fachkreis Automobil) connectors are standardized RF coaxial connectors designed for automotive applications. They ensure reliable high-frequency signal transmission (e.g., GPS, radio, Bluetooth, camera systems) through anti-misinsertion designs and electromagnetic interference (EMI) shielding capabilities.
Core Features
High-Frequency Performance: Supports frequencies up to 6 GHz, meeting high-speed data transmission requirements for 5G, GPS, and automotive radar systems.
Waterproof Rating: Select models feature IP67 protection, ensuring stable connectivity in harsh environments (e.g., exposure to rain, humidity, and liquids).
Anti-Misinsertion System: Utilizes color-coding + mechanical keying to prevent incorrect mating.
Vibration Resistance: Designed with latch locking mechanisms and integrated cable retention to maintain stable connections in high-vibration automotive environments.
Analysis of Selection dimensions
| Dimension | Instructions | Common Options |
| Frequency | Select based on the maximum frequency of the transmitted signal. | Standard FAKRA (6GHz), Mini-FAKRA (20GHz) |
| Application | Choose the appropriate coding and type of connector based on the specific connected device. | GPS (Blue), Automotive Internet (Light Blue/Aqua) |
| Environment | Consider whether features such as waterproofing, dust resistance, high-temperature resistance, and vibration resistance are required. | Waterproof type (e.g., IPX9K), Extended temperature range type (-40℃ to +105℃) |
| Interface | Choose between wire-to-wire, wire-to-board (board-mounted), right-angle, or straight connectors. | 180° board mount, Right-angle exit |
| Cable | Ensure the connector is compatible with the selected coaxial cable. | RG-174, RG-316, etc. |
| Standard | Verify that the product complies with necessary industry standards to ensure compatibility and reliability. | USCAR, ISO 20860-1/2 |
Analysis of Color Coding System
Overview of Color Coding System
Why use color coding system
The FAKRA connector color-coding system is an international standard that assigns specific combinations of colors and mechanical keying to particular automotive applications or RF signal types. Only male and female connectors with matching colors and mechanical keys can be successfully mated and unmated.
What are the advantages
Intelligent Standardized System: Engineered to achieve ultimate error-proofing, enhance production efficiency, and streamline maintenance processes.
Detailed analysis
Each color corresponds to a distinct signal type and application, as detailed in the figure below.
High-Frequency Scenario Solutions
| Applications | Connector Types | Features |
| GPS, broadcast antenna, 4G/5G | Standard FAKRA | 6GHz, color-coded, anti-mismating |
| 4K camera, millimeter-wave radar, LiDAR | Mini-FAKRA | 50GHz, higher density, miniaturization |
| On-board camera, external communication module | Waterproof FAKRA | Higher protection rating, miniaturization |
Environmental Reliability Verification
- Operating Temperature：-40℃ to +105℃
- Damp Heat Cycling：USCAR-2,Paragraph 5.6.2/ISO 20860-2 Clause 9.3
- Vibration & Mechanical Shock：USCAR-2,Paragraph 5.4.6/ISO 20860-2 Clause 9.1
- Thermal Shock: USCAR-2,Paragraph 5.6.1/ISO 20B60-2 Clause 9.2
- RoHS: Compliant with RoHS
FAQ
1.What Do FAKRA Connector Colors Mean?
Colors indicate applications: Blue – GPS antenna, Green – Rear-view camera (LVDS), Red – AM/FM radio antenna, White – Bluetooth/Wi-Fi, Black – General RF signals, Yellow – Satellite radio (e.g., SiriusXM).
2.How Does FAKRA Prevent Incorrect Mating?
- Keyed Housing: Unique mechanical slots for foolproof pairing.
- Color Coding: Quick visual identification.
- Polarization: Prevents reverse insertion.
3.Where Are FAKRA Connectors Used?
Common applications include:
- Infotainment systems (navigation, radio)
- ADAS sensors (cameras, radar)
- 5G/V2X antennas
- Backup camera systems
4.FAKRA vs. HSD Connectors: What’s the Difference?
- FAKRA: 50 Ω impedance; for RF signals (≤ 6 GHz).
- HSD connector: 100 Ω impedance; for high-speed data (USB, video).
5.Installation Tips for FAKRA Connectors
- Match color/keying before mating.
- Avoid sharp cable bends to reduce signal loss.
- Ensure a “click” sound for secure locking.
- Verify waterproof seals (if applicable).