USB 3.0 Type-A Connector

The USB 3.0 Type-A horizontal female connector is a high-performance interface base adopting Surface Mount Technology (SMT). Featuring a core design of horizontal pins for lying-down soldering, it significantly reduces vertical space occupation, perfectly adapting to the lightweight and high-density assembly requirements of electronic devices. Compliant with the USB 3.0 standard, the product is equipped with 9 internal pins, enabling a theoretical transmission rate of 5Gbps through independent high-speed differential pairs while maintaining backward compatibility with USB 2.0/1.1 devices for broad adaptability. Constructed with high-temperature resistant engineering plastic, highly conductive copper alloy contacts, and a robust metal shell, it boasts an insertion and extraction lifespan of over 5,000 cycles, delivering excellent mechanical stability and signal integrity. Additionally, it supports automated mass production, effectively enhancing assembly efficiency and product consistency. Widely applied in computers, automotive electronics, smart devices, industrial control systems, and various other scenarios, this connector is particularly suitable for equipment with strict space constraints, providing a reliable interface solution for high-speed data transmission and stable power supply.

Strong Space Adaptability & Flexible Layout

Adopting a horizontal SMT design with 90-degree bent pins, the connector is soldered flat on the circuit board with horizontally arranged pins, significantly reducing the vertical height of the component. This design perfectly solves the problem of large space occupation by through-hole connectors, making it especially suitable for scenarios with strict internal space requirements such as Raspberry Pi small projects and embedded devices. Meanwhile, it provides more layout space for high-density assembly of other electronic components on the circuit board.

Stable Transmission & Standard Performance

Equipped with 9 pins complying with USB 3.0 standards, the female connector achieves a theoretical transmission rate of 5Gbps through the added TX+/TX- and RX+/RX- high-speed differential pairs combined with full-duplex transmission mode. Its contacts are mostly made of gold-plated copper alloy, with a maximum contact resistance of no more than 30 milliohms, and can maintain an impedance matching range of 90 ohms ±15%, effectively reducing signal crosstalk, reflection and other issues. It ensures signal integrity during high-speed transmission, meeting the needs of large data volume transmission such as high-definition videos and large files.

Wide Compatibility & Excellent Adaptability

On one hand, it is backward compatible with USB 2.0 and USB 1.1 devices in terms of physical structure and protocol, automatically adapting to the corresponding rate when connected to older version male plugs without the need for additional adapters. On the other hand, some models adopt an AF double-layer contact design, which can better adapt to USB plugs of different thicknesses and avoid poor contact. Certain special models also feature IP67 or IP68 protection levels, which can resist dust and water stains even in complex environments such as outdoors, making them suitable for special scenarios like automotive and industrial equipment.

Reliable Mechanical Performance & Long Service Life

The shell is mostly made of SPCC metal, paired with a base made of UL94 V-0 grade high-temperature resistant LCP material, which can withstand high-temperature environments during soldering and equipment operation, with an operating temperature range usually covering -25℃~85℃. Meanwhile, the low insertion/extraction force design combined with precise structure not only ensures smooth insertion and extraction feel but also reduces wear on the contacts. Most products have an insertion/extraction life of up to 5000 times, and the structure with fewer leads makes it more resistant to vibration and impact, suitable for scenarios with frequent insertion and extraction.

Suitable for Automated Production & Easy Integration

Adopting standardized SMT (Surface Mount Technology) packaging, it is compatible with automated placement and soldering equipment, enabling fast and accurate soldering onto circuit boards. This not only improves mass production efficiency but also reduces manual welding errors, ensuring consistency and reliability of batch production. In addition, the standardized packaging specifications allow for easy integration with other electronic components, reducing the design and assembly difficulty of device motherboards.

KKG Electronics, each part of the use of temperature-resistant materials, high-temperature testing equipment 260 ℃ for 5 minutes, the appearance of the product does not change!

Consumer Electronics Sector

As a space-optimized interface solution, this horizontal female connector is widely integrated into motherboards or expansion cards of desktop computers, laptops, and all-in-one PCs. It provides high-speed data transmission channels for external storage devices such as USB flash drives and external hard disks, meeting users' demands for efficient large-capacity file transfer without occupying excessive vertical space. Meanwhile, it serves as a core interface component in smart TVs, set-top boxes, and streaming media players, supporting connections with peripherals like wireless keyboards, mice, and external speakers. It not only ensures the slim design of devices but also enriches users' interactive experiences. Additionally, gaming consoles, portable projectors, audio interfaces, and other devices frequently adopt this connector. Its compact design and stable performance can simultaneously support data transmission and power supply for peripherals, adapting to diverse entertainment scenarios.

Automotive Electronics Sector

Addressing the space constraints and stability requirements of automotive environments, this horizontal female connector is extensively used in in-vehicle infotainment systems, dash cams, car chargers, and other automotive devices. Its low-profile package perfectly fits the limited installation space of car dashboards and central consoles. The metal shell and high-wear-resistant contact design can withstand vibrations and frequent plugging/unplugging during vehicle operation, ensuring stable connection even under complex road conditions and providing reliable support for data transmission and power supply of in-vehicle devices.

Industrial Control Sector

In industrial automation scenarios, relying on its durability and anti-interference capability, this connector has become a key interface component for PLCs (Programmable Logic Controllers), industrial computers, and data acquisition modules. It can stably connect industrial sensors, barcode scanners, industrial printers, and other peripherals. In the complex electromagnetic environment of factory workshops, its optimized signal transmission design reduces interference, ensuring the accuracy of data collection and command transmission. Meanwhile, it adapts to the high-density PCB layout requirements of industrial equipment, facilitating the miniaturization and integration of industrial control systems.

Embedded and IoT Devices Sector

Embedded systems, Internet of Things (IoT) devices, and thin-client terminals have high requirements for interface compactness and mass production adaptability. The SMT package design and small size of this horizontal female connector perfectly meet these needs, easily integrating into high-density PCB layouts and supporting the miniaturization and lightweight of devices. Additionally, its compatibility with automated production processes can significantly improve production efficiency and reduce assembly costs for such large-scale mass-produced devices, making it an ideal interface choice for smart door locks, environmental monitoring sensors, portable IoT gateways, and other devices.

Commercial and Professional Equipment Sector

In office scenarios, compact printers, scanners, and other office equipment achieve slim机身 designs by integrating this horizontal female connector, while ensuring stable data interaction with computers, adapting to the minimalist layout requirements of modern office spaces. In the professional equipment field, portable medical diagnostic tools, small testing instruments, and other devices also rely on its space advantages and reliable performance to complete data transmission and power supply functions within limited device bodies, providing flexible connectivity solutions for professional scenarios such as medical care and testing.

Q1: How to distinguish between USB 3.0 and USB 2.0 versions of this horizontal female connector?

A1: The core differences lie in pin count and visual identification. The USB 3.0 version features 9 internal pins (including 4 USB 2.0 basic pins + 5 high-speed transmission pins) with a typically blue plastic insert inside the interface. In contrast, the USB 2.0 version has only 4 pins and a black or white plastic insert. These two characteristics allow for quick differentiation.

Q2: Will the transmission speed be affected when connecting USB 2.0 devices?

A2: It will automatically achieve backward compatibility and reduce speed. Supporting the USB 3.0 standard's theoretical 5Gbps transfer rate, the connector adapts to the corresponding version's speed (e.g., 480Mbps for USB 2.0) when connected to USB 2.0/1.1 devices, enabling normal use without additional configuration.

Q3: Can it support fast charging functionality?

A3: The interface itself has the potential to support fast charging, but the actual fast charging performance depends on the power line layout specifications of the PCB board. It is necessary to ensure the power line is thick enough to carry large currents; otherwise, fast charging output may be limited by the circuit design.

Q4: How to troubleshoot poor contact after soldering?

A4: Poor contact is most likely caused by uneven soldering, cold solder joints, or oxidation of pins/pads. It is recommended to reheat the solder joints with a hot air gun set to 250°C~350°C or add flux before touch-up soldering. Prior to soldering, clean the soldering iron tip as well as oxidized pads and pins to avoid residual impurities affecting connectivity.

Q5: What mounting method is suitable for it, and are there requirements for PCB board thickness?

A5: It adopts SMT (Surface Mount Technology) horizontal soldering with pins arranged parallel to the PCB board. It is compatible with common PCB board thicknesses of 1.0-1.6mm. For specific requirements, refer to the product specification sheet to ensure soldering stability and reliable electrical connection.

Q6: What precautions should be taken when using it in industrial environments?

A6: Prioritize models with anti-interference design and a wide temperature range (typically -25℃~85℃). Their metal housings and optimized signal transmission structures can reduce electromagnetic interference in industrial settings. Additionally, ensure soldering processes meet standards to prevent cold solder joints or loosening under vibration.