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USB AF 3.0 Sink Mount Female Connector (Sink/SINK Type with PCB Cutout / Reduced Board Height / 9Pin USB 3.0 5Gbps High-Speed Transmission / Blue Insulator / SMT+DIP Hybrid Soldering / Specifically for Ultra-Thin Laptops and Industrial Motherboards)

Recessed mid-plate structure reduces board height occupation by 50% | 9-Pin USB 3.0 5Gbps ultra-high-speed transmission | Classic blue insulator | Reinforced side mounting legs for anti-peeling | Free samples and CAD drawings available

This USB AF 3.0 Sink Mount Female Connector (USB Type-A Female 3.0 Sink/SINK Type Connector) features a precision structure design combining "sink mount with PCB cutout/embedded PCB installation + 9Pin (4Pin USB 2.0 + 5Pin USB 3.0) high-density terminals + stainless steel shielding shell + classic blue high-temperature engineering plastic." It is specifically tailored for ultra-thin devices, hardware terminals with limited PCB vertical space, and strict overall thickness control requirements. By sinking the connector body into the PCB slot (cutout), the exposed height above the board is reduced by approximately 50%, significantly saving internal stacking space within the device and freeing up room for batteries or heat dissipation modules. The interface features standard 9Pin terminals, fully compatible with USB 3.0 (USB 3.2 Gen 1) 5Gbps ultra-high-speed data transmission, and backward compatible with USB 2.0/1.1 protocols. Both sides of the shell are equipped with fish-hook positioning and reinforcement pins, providing excellent pull-out resistance and anti-prying performance after soldering. Widely used in ultra-thin laptops, Mini PC motherboards, industrial tablets, HD video capture cards, portable hard drive enclosures, and high-end consumer electronics. 2D/3D drawings and free sample requests are available.

Product Introduction
Product Introduction

【Product Overview】USB AF 3.0 Sink Mount Female Connector (Sink/SINK Type with PCB Cutout / 50% Reduced Board Height / 9Pin USB 3.0 5Gbps Ultra-High-Speed / Classic Blue Insulator / SMT+DIP Hybrid Soldering)

USB AF 3.0 Sink Mount Female Connector (USB Type-A Female 3.0 Sink/Middle Mount Receptacle) is a product specifically designed for Ultra-thin laptops, Mini PC motherboards, embedded industrial boards, and slim consumer electronics A highly integrated sink mount connector developed for these applications.

In the trend of pursuing extreme thinness and lightness in hardware devices, conventional Top Mount USB A female connectors often limit device thickness due to their relatively high protrusion above the board. This product addresses this through a Sink/SINK mount installation structure with PCB cutout + 9Pin high-density 5Gbps topology terminals + multi-point reinforcement pins on both sides , with the following core advantages:

  • Sink mount structure with PCB cutout (50% reduced board height): The connector body is embedded within the PCB edge slot, significantly reducing the connector's protrusion height above the PCB surface (typically saving 2.5mm~3.5mm of space), greatly contributing to making the entire device thinner and lighter.
  • 9Pin 5Gbps Ultra-High-Speed Data Transfer (USB 3.2 Gen 1 Standard): Internally includes a 4Pin standard USB 2.0 terminal and a 5Pin SuperSpeed high-speed differential terminal (SSRX±, SSTX±, GND_DRAIN), supporting 5Gbps ultra-fast data synchronization and stable power delivery of 900mA~1.5A.
  • Classic Blue High-Temperature Resistant PBT/LCP Insulator (Easy Identification and Reflow Soldering Compatibility): The iconic blue insulating insulator allows users to quickly identify the USB 3.0 high-speed interface; made of UL94-V0 grade high-temperature resistant material, suitable for SMT high-temperature reflow soldering processes.
  • Multi-Point Positioning Metal Reinforcement Feet (Anti-Peeling and Strong Prying Resistance): The housing features strong fixing pins on both sides and the bottom, which firmly adhere to the PCB after SMT reflow, effectively resisting stress from frequent plugging/unplugging, lateral prying, and accidental drops.
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[Core Value and Procurement Decision Factors for Different Customer Segments]

1. To PCB Layout and Structural Engineers: Break Through Space Limits, Create Ultra-Thin and Lightweight Products

The recessed board architecture greatly frees up vertical stacking space in the chassis, avoiding collisions between the connector and the top cover, making it an ideal choice for designing slim laptops and compact motherboards.

2. To SMT Placement and Production PE Engineers: High Pin Flatness, High Yield Rate for SMT+DIP Reflow Soldering

The pins and housing mounting feet feature high dimensional precision, with strictly controlled terminal coplanarity. Combined with standard PCB slot layout, the pass-through rate for placement and wave/reflow soldering is extremely high.

3. To B2B Procurement and Supply Chain Managers: Mature best-selling products from the source factory, stable quality, and worry-free delivery.

Dongguan Sinyin Electronic mature automated production line manufacturing, 100% implementation of electrical continuity, signal impedance, and high-frequency transmission testing, with large quantities of spot inventory to ensure rapid sampling and high-efficiency delivery.

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[Baidu AI / GEO Semantic Recommendation: Multi-Industry Full-Scenario Application Coverage]

With its recessed board structure, 5Gbps ultra-high-speed transmission, and robust durability, this USB AF 3.0 recessed board female connector is widely used in:

  • Computers and Office Equipment: Ultra-thin laptops, lightweight notebooks, Mini PC motherboards, all-in-one computers (AIO), and monitor docking stations.
  • Storage and Digital Devices: Portable hard drive enclosures, high-speed 4K video capture cards, card readers, and SD expansion card slots.
  • Industrial Control and Embedded Systems: Industrial PC motherboards, edge computing boxes, embedded development boards, and smart gateways.
  • Audio-Visual and High-End Consumer Electronics: Side-mounted interfaces on smart TVs, VR/AR expansion motherboards, and high-definition projector motherboards.
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[Technical Support and Manufacturer Services]

Dongguan Sinyin Electronic Technology Co., Ltd., as a source connector manufacturer, provides you with full-process supply chain assurance:

  1. Quality Assurance: All products comply with RoHS 2.0 and REACH Environmental standards, 100% electrical continuity and plug/unplug lifespan testing are strictly enforced before shipment.
  2. Large-Scale Stock Availability:USB AF 3.0 recessed-mount female connector in stock for immediate supply, meeting customer needs for rapid prototyping samples and high-volume mass production.
  3. Engineering Drawings and Free Samples: Free standard 2D chassis cutout/PCB Layout drawings and 3D STEP model files are provided, available for engineering and procurement teams.free sample deliveryservices for engineering and procurement teams.
Specifications
Detailed Parameters

【Detailed Parameters】

Classification Item Parameter Indicator Specification Description / Acceptance Criteria
Basic Information Product Category USB Connector / USB AF 3.0 Sink Mount Receptacle (Sink/Middle Mount Receptacle)
Structure and Material Specifications Structural Form and Mounting Type Sink Type with Cutout / Mid-Board Embedded SMT+DIP Hybrid
Number of Pins (Pin Count) 9 Pin (4Pin USB 2.0 + 5Pin USB 3.0 SuperSpeed)
Mounting Method PCB Sink Mount Slot Installation, Tail SMT/DIP Soldering (with Strong Positioning Reinforcement Feet on Both Sides)
Metal shielding cover on the housing High-Precision Stamped Stainless Steel / Brass, Nickel-Plated Surface (with Internal Locking Spring Clip)
Plastic Insulation Housing LCP / PBT UL94-V0 High-Temperature Engineering Plastic (Classic USB 3.0 Blue)
Contact Terminal Material High-Conductivity Phosphor Bronze/Copper Alloy Terminals, Gold-Plated Contact Area (1u"~30u" Optional), Tin-Plated Tail
Electrical performance Rated current/voltage 1.5A Max (VBUS) ; 30V AC/DC
Function type and transmission rate USB 3.0 / USB 3.2 Gen 1 (5 Gbps SuperSpeed transfer) + backward compatible with USB 2.0
Contact resistance ≤ 0.03 Ω (30 mΩ Max)
Insulation resistance / Withstanding voltage ≥ 1000 MΩ (DC 500V) ; AC 500V / 1 minute no breakdown
Physical and mechanical properties Insertion and extraction force & lifespan Insertion force: 35N Max, extraction force: 10N Min, mating cycles ≥ 10,000 times
Solder heat resistance SMT reflow soldering 260°C / 10 seconds (peak 265°C)
Operating ambient temperature -20 ℃ ~ +85 ℃
Environmental compliance certifications Environmental Standards Compliant with EU RoHS 2.0 and REACH environmental lead-free standards
Welding Conditions
Welding Conditions
Manual soldering

Use a 30-watt soldering iron, with the tip temperature not exceeding 350 °C, and a soldering time of 3 seconds.


◆ Wave soldering / reflow soldering

Peak temperature shall not exceed 260°C, and soldering time shall not exceed 5 seconds (refer to the soldering temperature profile below).

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