KRCONN has successfully developed an IPX8‑rated waterproof Type‑C female connector.

 TWR36-36111605-K8 16-pin (double-layer housing, soldered, IPX8 waterproof) horizontal board-mounted female connector.

Krconn has launched a major new product. Brand-new flagship-level IPX8 waterproof rating Waterproof Type-C connector ( Model: TWR36-36111605-K8 ). This highly integrated interconnect core component has now officially entered mass production, specifically addressing the stringent demands of industries such as smart wearables, industrial ruggedized terminals, and consumer electronics—requirements that include extreme water‑resistance and compact, space‑constrained stacking. The product boasts exceptional IP‑X8/IP68‑rated protection, enabling continuous immersion at a depth of 1.5 meters for 30 minutes without any leakage. Within an ultra‑compact form factor—main interface width 9.60 mm, overall height 6.35 mm, and board‑mounting height CH 1.76 mm—it seamlessly integrates a precision internal dispensing structure with cutting‑edge LIM liquid‑injection silicone sealing technology. The inner housing is crafted from medical‑grade SUS316L stainless steel, complemented by triple‑layer laser welding and a reverse‑drawn stretching structure. This design not only extends the hermetic sealing path at the microscopic level and minimizes stress on cross‑sectional areas but also delivers robust high‑current conduction and exceptionally strong board‑level retention, providing reliable hardware protection for your next‑generation smart devices.
  I. New Product Technical Specifications (This IPX8‑rated, waterproof Type‑C connector embodies the KRCONN team’s core innovations in mold design and material processing. Through groundbreaking advancements across seven key dimensions, it decisively addresses the longstanding challenges of conventional high‑waterproof designs—namely, bulky form factors and compromised long‑term airtightness.)

(1) Integrated pull-back stretching main housing

The connector housing is manufactured using a high-precision, single‑step, reverse‑draw stretch‑forming process, resulting in an interior free of mechanical seams. This design not only eliminates potential pathways for microscopic water ingress but also creates a 360°, seamless internal shield that provides superior sealing and enhanced electromagnetic compatibility (EMC) immunity.

(II) Innovative Internal Dispensing Structure

The product breaks with conventional external dispensing approaches, adopting a more precise internal dispensing process instead. This design significantly extends the internal hermetic sealing path and ensures that, when subjected to external water pressure, the cross‑section experiences minimal stress, delivering long‑lasting waterproof performance. At the same time, internal dispensing greatly reduces the footprint of the connector terminals on the PCB, facilitating a compact, ultra‑thin, and highly stacked motherboard design.

(3) T=0.25 High-Conductivity Terminal Design (Meets 8A High Current)

The internal contact terminal is crafted from a proprietary, high‑conductivity copper alloy with a thickness of T=0.25 mm. Through meticulous optimization of the current‑carrying cross‑section and thermal‑dissipation architecture, this terminal can support an extreme peak current of up to 8 A in electrical design (with a nominal steady‑state rating of 5 A max.), providing ample hardware margin for the device’s PD fast charging and high‑power supply requirements.

(4) Advanced LIM liquid injection-molding silicone ring process

The waterproof core barrier employs a high‑end LIM (Liquid Injection Molding) process, with the sealing ring integrally molded directly onto the metal housing. Coupled with precise structural calculations of the housing, the compression of the silicone ring on each side is tightly controlled at 0.15 mm (corresponding to an outer dimension of 3.70 mm and a housing dimension of 4.11 mm, with a 0.82 mm positioning clearance), ensuring that the seal maintains excellent elastic recovery even after prolonged operation.

(5) Enclosure + Steel Plate DIP Composite Plug-in Board Design

At the connector’s tail and on both side pins, a composite mounting mechanism is employed that simultaneously presses the housing and the central steel shims into a DIP (dual in-line package) configuration. This design significantly enhances the solder‑retention strength on the PCB motherboard, markedly improving peel resistance and torsional‑pull strength.

(6) Laser Welding Process for the Three-Layer Outer Shell

The product incorporates high‑energy‑density precision laser welding technology to achieve multi‑point, three‑layer seamless welding of the inner and outer metal housings as well as the reinforcing steel plates. This approach significantly enhances the product’s mechanical robustness and overall structural rigidity at the fundamental physical‑mechanical level, ensuring that the device maintains its structural integrity even when dropped or subjected to external compression.

(7) High-efficiency manufacturing through two-shot molding

The manufacturing process strictly adheres to a dual‑injection molding technique: “1st injection + 2nd injection.” By performing precise injections in two separate steps, the plastic body (PA10T) achieves microscopic-level tight bonding with the metal terminals and steel shims, resulting in exceptionally strong terminal retention.

II. Features and Advantages

(1) Flagship-level submersible IPX8 / IP68 protection

Supports continuous immersion at a depth of 1.5 meters for 30 minutes (30 min / 1.5 m), delivering zero‑leak performance. It not only protects against everyday splashes but also effortlessly handles extreme water‑exposure scenarios, such as vigorous exercise, diving, or sudden downpours outdoors.

(2) Premium SUS316L stainless steel inner shell

On the inner stainless steel shell (Shell 1), which is most exposed to external moisture, we consistently use premium SUS316L-grade stainless steel, delivering exceptional resistance to pitting and to both acidic and alkaline corrosion—ensuring outstanding durability even when subjected to salt spray, sweat, household detergents, or outdoor acid rain.

(3) Long service life with ten thousand insertion–extraction cycles; pull-out force remains consistently stable.

Supports up to 10,000 mating cycles. Insertion force remains stable between 5 and 20 N, with an initial pull‑out force of 8 to 20 N; even after 10,000 life‑cycle tests, the pull‑out force consistently stays within the optimal range of 6 to 20 N, effectively eliminating the risk of loosening or poor contact over time.

(4) Industrial-grade 48-hour salt spray resistance

It successfully passed the 48-hour continuous high-concentration salt-spray accelerated aging test, with the coating and housing remaining in excellent condition, making it ideally suited for coastal regions with high humidity and salt spray, as well as for applications involving heavy sweating.

(5) Carefully selected, high‑specification BOM materials

III. Target Market and Applications

(1) High-end Smart Wearables and Personal Care Electronics: Professional diving watches, high-end fitness trackers, professional-grade outdoor GPS trail navigation devices, smart sports glasses, premium waterproof electric toothbrushes, smart razors, water flossers, and more.

(II) Intelligent Measuring Instruments and Precision Portable Terminals: Outdoor portable multi‑function network cable tester (cable tracer), smart refractometer, handheld digital area meter, high‑precision ambient illuminance meter, portable field exploration terminal, and more.

(3) Industrial-grade rugged terminals and specialized equipment: Industrial-grade rugged smartphones, durable tablets, handheld PDA barcode scanners for logistics and warehousing, and field‑use inspection, measurement, and law‑enforcement devices.

(4) Digital Audio-Visual and Portable Hardware: High-end TWS Bluetooth earphone charging case (supports fast charging), portable waterproof Bluetooth speaker, action camera, handheld gimbal stabilizer, and outdoor specialty walkie-talkie.

(5) Smart Homes and Intelligent Transportation: In-vehicle waterproof central control terminal for shared mobility, smart dashboard for outdoor two-wheeled electric vehicles, and all‑weather rainproof security surveillance camera for outdoor use.

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