KH-FKRM-1003-03Z Light Blue FAKRA Connector for Smart Automotive RF Connectivity

As the automotive industry continues to advance toward greater intelligence and connectivity, in-vehicle antenna systems, satellite navigation, and wireless communication systems are placing increasingly stringent demands on the performance and reliability of RF connectors. With standardized interfaces, stable RF transmission performance, and an established track record in automotive applications, FAKRA connectors are widely used in in-vehicle communications, navigation and positioning, and antenna signal transmission.

To meet the requirements of PCB-side connections in automotive electronic equipment, Kinghelm introduces the KH-FKRM-1003-03Z, a 90° PCB-mount male FAKRA connector. Featuring a right-angle design, a 50Ω characteristic impedance, and a rated frequency range of DC to 6 GHz, this connector provides a compact and practical solution for automotive RF interconnection.

Kinghelm KH-FKRM-1003-03Z Product Image

1. Kinghelm KH-FKRM-1003-03Z Product Specifications

• Brand: Kinghelm
• Model: KH-FKRM-1003-03Z
• Product Type: 90° PCB-Mount Male FAKRA Connector
• Color: Light Blue
• Mounting Type: Through-Hole
• Packaging: Bagged
• Gross Weight: 4.24 g
• Frequency Range: DC–6 GHz
• Characteristic Impedance: 50Ω
• Operating Temperature: -40°C to +105°C

2. Right-Angle Design Optimizes PCB Layout and Space Utilization

The KH-FKRM-1003-03Z features a light blue insulating housing, metal connector components, and PCB-mount terminals. Its compact structure is designed to support space-efficient integration. The 90° right-angle configuration changes the direction of the RF interface, making it suitable for electronic equipment with limited installation space and helping optimize the layout between the connector and the cable.

In automotive electronic control units, in-vehicle navigation devices, communication modules, and antenna-related circuits, connectors must meet electrical requirements while also accommodating PCB layouts, mechanical clearances, and assembly requirements. The right-angle PCB-mount design gives engineers greater flexibility when positioning interfaces and helps reduce the space constraints associated with straight connector configurations.

The product uses a through-hole mounting design and is suitable for compatible through-hole soldering processes. During engineering design, selection and layout should take into account PCB thickness, pad dimensions, mounting height, and the mechanical structure of the target device.

3. DC–6 GHz Frequency Range for Diverse RF Connectivity Requirements

RF performance is an important consideration when evaluating FAKRA connectors. The KH-FKRM-1003-03Z has a rated frequency range of DC to 6 GHz and a characteristic impedance of 50Ω, making it suitable for RF signal connections that meet its specified electrical performance requirements.

A 50Ω characteristic impedance is commonly used in automotive RF systems. Maintaining proper impedance matching between the connector, RF cable, PCB transmission lines, and associated equipment helps reduce signal reflections and improve RF link performance. The rated DC–6 GHz frequency range provides a basis for integration into RF connectivity applications operating across different frequency bands.

Depending on system requirements, the connector may be considered for in-vehicle antennas, GNSS navigation, radio reception, and other RF signal paths that fall within its applicable frequency range and electrical specifications. Actual suitability should be verified against parameters such as insertion loss, return loss, shielding effectiveness, and the measured performance of the complete transmission link.

4. Wide Operating Temperature Range for Automotive Electronics

Automotive electronic equipment may be exposed to significant temperature variations, continuous vibration, and other demanding operating conditions. As a result, a connector's temperature tolerance and mechanical stability are important factors in product selection.

The KH-FKRM-1003-03Z has a rated operating temperature range of -40°C to +105°C, providing a useful selection criterion for RF interconnection applications operating within these limits. With a gross weight of approximately 4.24 g and bagged packaging, the product also supports convenient storage, transportation, and production material management.

In automotive electronic systems, connector reliability depends not only on the connector itself but also on soldering quality, PCB retention, cable strain relief, and the mechanical design of the complete assembly. Before mass production, it is recommended that the connector be evaluated under the intended operating conditions through temperature cycling, vibration, mechanical strength, and RF performance testing to verify compatibility with the overall system.

Kinghelm KH-FKRM-1003-03Z Specification

5. Development Trends in FAKRA PCB-Mount Connectors: Miniaturization, Higher Frequencies, and Greater Reliability

As smart cockpits, connected vehicles, and Advanced Driver Assistance Systems (ADAS) continue to evolve, the number of RF interfaces and the demand for signal transmission inside vehicles are increasing. This development is driving new requirements for FAKRA PCB-mount connectors.

First, miniaturization and high-density integration are becoming increasingly important. As automotive electronic control units become more integrated, available PCB space continues to shrink. Connectors must therefore optimize their overall dimensions and mounting configurations while maintaining the required mechanical strength and electrical performance. Traditional FAKRA connectors, Mini-FAKRA, and High-Speed FAKRA (HFM) solutions each offer distinct advantages for different application scenarios.

Second, higher operating frequencies place greater demands on connector design. With the development of in-vehicle communications and multi-band antenna systems, impedance matching, insertion loss, return loss, and electromagnetic shielding performance are receiving increasing attention. For products rated for operation up to 6 GHz, careful design of PCB pads, grounding structures, and RF transition regions can help achieve the desired electrical performance.

Third, automotive-grade reliability and manufacturing consistency remain key competitive factors. Connector manufacturers must continue to optimize terminal processing, insulating materials, plating quality, and assembly processes while strengthening product testing and quality control to meet the long-term operational requirements of automotive electronics.

Against this backdrop, conventional FAKRA products will continue to play an important role in established RF applications, while higher-density and higher-bandwidth interconnection solutions will provide additional options for future automotive electronic designs.

6. Conclusion

From conventional in-vehicle antenna connections to an expanding range of automotive RF applications, FAKRA connectors remain an important component of automotive electronic interconnection systems.

The Kinghelm KH-FKRM-1003-03Z 90° PCB-mount male FAKRA connector combines a right-angle configuration, a rated frequency range of DC to 6 GHz, a 50Ω characteristic impedance, and an operating temperature range of -40°C to +105°C. These specifications make it a product worth considering for automotive RF interconnection applications that meet its design and performance requirements.

As automotive electronics continue to become more integrated and advanced, Kinghelm will continue to focus on connector structural design, electrical performance, reliability, and manufacturing processes, providing a broader range of interconnection solutions for in-vehicle communications, navigation and positioning, and RF connectivity applications.

About Kinghelm

Kinghelm(www.kinghelm.net) has years of experience in the connector and antenna industry. Its product portfolio includes Type-C, SMA, IPEX, MCX, and HDMI connectors; automotive wiring harnesses; adapter cables; pin headers; terminals; RF cables; various antennas; and RF coaxial connectors.

Several models, including KH-IPEX-K501-29, KH-SMA-K513-G, KH-TYPE-C-16P, KH-SMA-KE-Z, KH-SMA-KWE17-G, KH-MMCX-Z, KH-3216-A35, and KH-IPEX4-2020, have maintained consistently strong sales volumes and gained market recognition as popular products.

Supported by years of accumulated technical expertise, these products are designed to deliver stable signal transmission and adaptability to a range of operating environments. They can meet the standard interconnection requirements of applications across connected vehicles, the Internet of Things (IoT), smart hardware, industrial control, and other fields. Customers have provided positive feedback on their stable and practical performance, making them dependable options for supporting product development and project implementation.

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