Waterproof Type-C connector

Waterproof Type-C connector

The USB Type‑C interface, introduced by the USB Implementers Forum in August 2014, boasts advantages such as reversible plug orientation, a compact form factor, high current delivery, and fast data transfer speeds. Today, it has become the industry standard across numerous sectors, including smartphones, power banks, adapters, and tablets. Since as early as 2015, Jingrui has been active in the USB Type‑C space; through years of experience and continuous development, the company has collaborated with industry partners to design USB Type‑C solutions tailored to the specific needs of various applications.

Standard Type-C connector

Standard Type-C connector

As early as 2015, KRCONN has been deeply engaged in the R&D of USB Type‑C connectors. Leveraging years of manufacturing and structural‑design expertise, and tailored to the assembly requirements of various indoor drying devices, the company has developed a range of standardized, off‑the‑shelf Type‑C female connectors. The entire product line employs SMT mounting technology and is available in two main specifications: 16‑pin USB 2.0 and 24‑pin full‑function high‑speed. These connectors support 5A high‑current fast charging and offer multiple mounting options, including horizontal recessed‑board and vertical surface‑mount configurations. With a comprehensive array of size and specification choices, they feature no waterproof sealing and are well suited for automated SMT production, delivering exceptional cost‑effectiveness while broadly compatible with standard indoor digital hardware.

Board-side Type-C male connector

Board-side Type-C male connector

As early as 2015, KRCONN has been deeply engaged in the R&D of USB Type‑C connectors. Leveraging years of expertise in structural design and mass production, the company has developed a comprehensive lineup of board‑side Type‑C male connectors tailored for direct‑mount PCB applications. The product range includes two soldering options—SMT surface‑mount and DIP through‑hole—and covers both basic 16‑pin charging variants and full‑function high‑speed 24‑pin models. These connectors reliably handle up to 5 A of current and support PD fast charging as well as high‑speed signal transmission. A complete suite of board‑side mounting configurations is available, including direct‑mount, side‑mount, and extended‑length versions, with standardized dimensions that seamlessly integrate into automated production lines. Featuring a non‑waterproof sealed design, they are optimized for indoor, dry environments and find broad application in adapter boards, charging modules, portable peripherals, compact industrial control motherboards, and other devices.

TWS charging spring contacts

TWS charging spring contacts

TWS charging shims, crafted from a dual-material combination of phosphor bronze and stainless steel, are manufactured using either SMT or assembly processes. With multiple height options and diverse mating‑contact designs, they form a comprehensive product portfolio spanning from budget‑friendly to mid‑to‑high‑end segments. Featuring standardized stock items and multi‑size compatibility, these solutions cater to Bluetooth earphone manufacturers, audio ODMs, and digital accessory suppliers, delivering low‑cost, highly adaptable charging‑contact solutions.

Precision spring clip

Precision spring clip

Precision metal shrapnel is a core elastic component that enables battery conduction, grounding, and signal contact in small digital and smart wearable devices, widely used in TWS earbuds, smart wristbands, portable compact electronic modules, and other products. Leveraging years of expertise in precision metal stamping, Jingrui has independently developed the SPN series of standardized positive‑pressure precision shrapnel, establishing a comprehensive specification‑selection matrix. The entire series is available in two base materials—stainless steel and copper—covering product heights from 3.50 mm to 6.80 mm, with multiple ranges of elastic travel. Optional features include scratch‑resistant contacts and simply supported reinforced structures. Integrated one‑step stamping combined with gold‑plated contacts ensures long‑lasting, stable elasticity and low contact resistance, making it compatible with automated SMT assembly. With 119 standard stock specifications, it meets the internal stacking requirements of most thin‑and‑light devices, offering outstanding cost‑effectiveness and supporting a wide range of conventional electrical‑contact applications in consumer electronics.

SIM card slot

SIM card slot

The SIM card holder is a core connectivity component that enables cellular networking in devices, widely used in smartphones, smart wearables, IoT communication modules, industrial control terminals, and other electronic products with communication capabilities. KRCONN has been deeply engaged in the precision connector industry for many years and offers a full range of standardized SMT‑mountable SIM card holders, covering the three mainstream card‑ejection mechanisms—self‑ejecting, flip‑cover, and direct‑insertion‑and‑removal. These products are available in two variants—supporting or not supporting hot‑swapping, and with or without positioning pins—tailored to specific application requirements. Featuring high‑temperature‑resistant insulating inserts and thickened gold‑plated conductive spring contacts, they deliver stable rebound and reliable signal transmission, seamlessly integrating into automated SMT mass‑production processes. With their independent single‑card design, they offer exceptional cost‑effectiveness and can meet the space constraints and usage demands of various devices, including slim consumer electronics and industrial data‑acquisition terminals.

TF card slot

TF card slot

The TF (Micro SD) card socket is a core connector that enables external memory cards and local data expansion, widely used in dashcams, surveillance systems, IoT modules, portable audio‑video devices, and other electronic products requiring storage expansion. KRCONN offers a full range of standardized surface‑mount TF card sockets, covering the four mainstream card‑ejection mechanisms: self‑ejecting, pin‑type ejection, direct plug‑in/plug‑out, and flip‑cover designs. Options include support for or absence of hot‑swapping, as well as versions with or without positioning pins. The products feature high‑temperature‑resistant LCP insulators and gold‑plated conductive contacts, and are manufactured using SMT technology to facilitate automated mass production. They deliver stable read/write performance, excellent durability under repeated insertion and removal, and a cost‑effective single‑card independent design, making them suitable for space‑constrained applications such as slim digital devices and industrial data‑acquisition terminals.

SIM & TF Combo Card Slot

SIM & TF Combo Card Slot

Lightweight, slim smart communication devices typically require simultaneous support for SIM‑based cellular connectivity and TF‑type local storage. The SIM‑TF combo card slot integrates both card slots into a single connector, significantly reducing PCB footprint and serving as a core interconnect component for compact terminals. KRCONN has launched a standardized series of integrated combo card slots, offering two mainstream designs—top‑eject and direct‑plug‑in—and supporting hot‑swapping across the entire lineup, allowing users to freely replace SIM cards and memory cards while the device is powered on. Featuring a thin, low‑profile design without positioning pins and employing SMT mounting technology, the gold‑plated contacts ensure reliable card reading and stable network performance. Designed for automated mass production, these solutions are widely used in IoT communication modules, portable MIFI devices, dashcams, entry‑level mobile terminals, portable positioning devices, and other electronic products that simultaneously require communication and local storage.

RF radio frequency connector

RF radio frequency connector

Wireless communication devices rely on RF components to ensure stable high‑frequency signal transmission between the antenna and the motherboard. RF connectors and RF switches are core foundational elements in wireless modules such as Bluetooth, Wi‑Fi, 5G, and UWB. KRCONN has long been dedicated to the R&D of miniature RF assemblies, offering a complete lineup of standardized RF products. Its RF connector portfolio fully covers IPEX‑type miniaturized specifications from Generation 1 through Generation 5, delivering progressively smaller form factors and lower high‑frequency losses with each generation. Complementing these connectors are a range of RF switches that enable rapid switching of RF paths. All products employ SMT surface‑mount technology and feature precision gold‑plated terminals, providing excellent impedance matching and minimal signal attenuation, making them well suited for automated mass production. They are widely used in smartphones, smart wearables, wireless gateways, IoT communication modules, GPS positioning devices, and other types of wireless electronic products.

Other types

Other types

Beyond core connectors, a wide range of conductive, shielding, and fastening hardware components serve as critical auxiliary materials that ensure stable assembly and reliable signal transmission throughout the entire device. Leveraging years of expertise in precision metal stamping and turning, KRCONN offers a comprehensive lineup of standardized hardware accessories, encompassing eight major categories: copper post terminals, charging clips, conductive terminals, ultra-thin SMT shims, compression cover rings, nickel‑silver shielding covers, metal positioning brackets, and screw washers. These products are crafted from premium materials such as brass, phosphor bronze, stainless steel, and nickel‑silver, with multiple height options to meet the demands of ultra‑thin, stacked electronic designs. Fully compatible with SMT pick‑and‑place automated production, they deliver multifunctional performance—providing electrical conductivity, electromagnetic shielding, structural support, and assembly cushioning. They can be seamlessly paired with key connectors like Type‑C ports, TWS charging contacts, and SIM card slots, offering a one‑stop solution for all hardware‑related requirements in TWS earbuds, smart wearables, IoT modules, and small consumer electronics PCB assemblies.