KRCONN has successfully developed an IPX5‑rated waterproof Type‑C female connector.

 TWR26-60111605-05 16-pin (double-layer housing, soldered, IPX5 waterproof) vertical female connector on the board.

Krconn Introducing a brand-new, highly protective, everyday waterproof solution. Type-C connector ( Model: TWR26-60111605-05 ). As a next-generation, high-efficiency interconnect solution, this product It seamlessly integrates an innovative all‑over‑mold waterproofing process with a high‑density, double‑wave compression‑seal technology, overcoming the dual challenges of high cost and complex structure that have long plagued conventional waterproof connectors. Within an ultra‑compact footprint—total height just 6.00 mm—this connector delivers exceptional electrical performance and outstanding mechanical durability. Coupled with a flexible post‑assembly dispensing upgrade option, its waterproof rating can be elevated to the highest IPX7 immersion level after surface‑mount assembly.

This product is designed to deliver exceptional value, providing a robust and reliable waterproof and dustproof barrier for smart wearables, consumer electronics, and a wide range of outdoor smart devices.

  I. New Product Technical Specifications (This life‑waterproof Type‑C connector from Krconn incorporates numerous core process innovations, with comprehensive optimizations spanning structural mechanics, mechanical strength, and assembly procedures, achieving the following key technological breakthroughs.)

(1) Integrated Over-Mold Core Waterproofing Technology

After the internal metal housing and components have been precisely assembled, the entire product undergoes a secondary overmolding process. During this step, dedicated grooves pre‑molded into the main structure ensure that the nylon plastic fully fills the cavity during overmolding. This not only significantly enhances the adhesion between the elastomer and the metal housing but also creates a seamless, tightly sealed layer. While delivering excellent waterproof performance, it also substantially reduces manufacturing costs.

(2) Original internal anti‑gelation cover plate mechanism

During the high-pressure overmolding process, to thoroughly address the industry‑wide challenge of resin leakage and overflow into the connector’s internal contact cavities, and to comply with USB‑IF design specifications, the KRCONN engineering team has incorporated a dedicated “isolation cover plate” at the rear end of the pins. This structure creates a robust physical barrier that effectively prevents internal resin filling, ensuring pristine cleanliness and reliable electrical contact at the terminal interfaces.

(3) Precision “peen‑marking” and adhesive‑pulling technology for iron‑shell feet

To address the high-temperature challenges of reflow soldering in customers’ SMT (surface-mount technology) processes, conventional connectors often develop minute gaps due to differences in the thermal expansion coefficients of metal and plastic materials, leading to compromised waterproofing. This product employs a high-precision knurling process on the metal‑shell pins, which not only facilitates subsequent adhesive‑pull‑off operations but also significantly enhances the physical adhesion between the metal housing and the plastic body, ensuring that sealing performance remains robust even after exposure to high‑temperature soldering.

(4) 360° Double-Wave Pressurized Sealing Gasket

The product is equipped with a custom‑designed, highly elastic silicone ring featuring a dual‑wave structure. Thanks to a meticulously engineered mechanical fit, this ring achieves a precise 0.2 mm compression under load during assembly, creating two fully independent yet continuous, tightly sealed interfaces between the device’s housing and the silicone ring. This delivers 360° all‑around sealing, effectively preventing the ingress of everyday water, sweat, and even microscopic dust particles.

(5) Meets both TID and IEC dual authoritative certifications.

The connector’s outer metal shell features a streamlined, highly efficient stamped‑spring design that ensures ESD protection and optimizes insertion and removal, while fully complying with the USB‑IF TID certification standards and IEC international electrical safety regulations.

II. Features and Advantages

(1) Tiered protection capability, with a maximum rating of IPX7.

It features a flexible protection‑upgrade solution. In its standard factory‑configured state, prior to surface‑mount technology (SMT) and dispensing, it achieves a basic IPX4/IPX5 splash‑proof rating; after the customer completes SMT assembly and applies additional dispensing, the overall waterproof rating can be elevated to IPX7—providing immersion‑level protection—thus meeting the demands of even the most rigorous and complex wet‑environment applications.

(II) Excellent balance of process costs

By eliminating the cumbersome multi‑part assembly and multiple sealing steps typical of conventional waterproof connectors, this product leverages an innovative overmolding process and an integrated mold design to significantly reduce material and labor costs, delivering exceptional cost‑effectiveness.

(3) Outstanding Fast-Charging and Data-Transfer Performance

Rated current up to 5A Max., fully compatible with mainstream high‑current fast‑charging protocols, delivering efficient power delivery and high‑speed data synchronization.

(4) Excellent mechanical durability

After rigorous testing, it supports up to 10,000 standard mating cycles. Insertion force remains stable at 5–20 N, and the initial extraction force is 8–20 N (even after tens of thousands of cycles, the extraction force consistently stays within the 6–20 N range). The tactile experience is smooth, with clear rebound feedback.

(5) 48-hour salt spray corrosion resistance

It successfully passed the 48-hour high-concentration salt spray test, with the housing and plating demonstrating exceptional corrosion resistance and oxidation stability, enabling it to effortlessly withstand harsh environments such as sweat, high humidity, and coastal areas exposed to heavy salt spray.

(6) Carefully selected, high‑specification BOM materials

III. Target Market and Applications (Owing to its slim form factor, robust stepped waterproofing, and unparalleled cost advantages, this connector is widely suited for the following market segments and high‑protection applications.)

(1) Smart Wearables and Personal Care: Wearable and personal-care devices that frequently come into contact with water or sweat, such as smartwatches, fitness trackers, smart glasses, electric toothbrushes, facial cleansing devices, smart razors, and portable water flossers.

(II) Digital Audio-Visual and Portable Electronics: TWS Bluetooth earphone charging case, portable waterproof Bluetooth speaker, action camera, handheld gimbal stabilizer, outdoor walkie-talkie, digital voice recorder, and more.

(3) Smart Measuring Instruments and Portable Terminals: Outdoor multifunctional network cable tester (cable tracer), portable smart refractometer, area meter, illuminance meter, portable GPS positioning terminal, and more.

(4) IoT and Smart Home Hardware: Interconnected scenarios such as smart access control panels, outdoor smart surveillance cameras, in-vehicle central control terminals for shared mobility, and portable electronic scales that require long-term outdoor protection against rain and dust (IPX4 to IPX7).

IV. Product Parameters, Specifications, and Production & Supply Information