Mid mount usb c receptacle pinout type-c 24 Pin connector SMT CL=0.5MM l=8.21mm

Part NumberUSB-TC24-F24

TypeUSB Type-C Female Receptacle, 24-Pin, SMT Mid-Mount

Pin Count24 Pins (Full-Featured, Double Row)

Mounting StyleSMT Mid-Mount (Sinking / Recessed)

Centerline Height (CL)0.5mm

USB C Receptacle Pinout 24 Pin SMT Mid-Mount Overview

The USB C receptacle pinout 24 pin SMT mid-mount is a full-featured USB Type-C female connector engineered for ultra-thin electronic devices requiring reduced board height. This 24 pin USB-C female connector features a mid-mount (sinking) SMT design with CL=0.5mm centerline height and 8.21mm body length, allowing the connector body to recess partially below the PCB surface. Fully compliant with USB-IF specifications, this SMT mid-mount USB-C solution supports USB4 Gen 3 data rates up to 40 Gbps and USB Power Delivery up to 5A/240W.

Engineered with a robust stainless steel shell and dual-row 24-pin SMT termination, this USB4 Type-C receptacle provides complete USB-C functionality including four SuperSpeed TX/RX differential pairs (Pins A2-A3, A10-A11, B2-B3, B10-B11), USB 2.0 D+/D- (Pins A6-A7, B6-B7), CC configuration channels (Pins A5, B5), VBUS power (Pins A4-A9, B4-B9), and SBU sideband signals (Pins A8, B8). The USB4 pinout configuration repurposes the SuperSpeed lanes for 4×12 Gbps FRL channels, delivering 40 Gbps total bandwidth. Manufactured under ISO 9001:2015 standards, this sinking USB-C connector is ideal for next-generation laptops, tablets, and 2-in-1 devices where every fraction of a millimeter counts.

The CL=0.5mm USB-C mid-mount design reduces the connector height above the PCB to just 0.5mm at the centerline, compared to 1.57mm for standard top-mount receptacles. This makes it possible to achieve sub-8mm total device thickness while maintaining full USB4 compatibility. Fully RoHS 3 and REACH compliant, this RoHS USB-C connector uses lead-free plating and high-temperature LCP housing (UL94V-0) rated for 260°C reflow soldering. Vistar Electronics offers free engineering samples and OEM/ODM customization for your ultra-slim device requirements.

Technical Specifications

24 Pin USB-C Female Connector SMT Mid-Mount Specifications

Parameter	Specification
Part Number	USB-TC24-F24
Type	USB Type-C Female Receptacle, 24-Pin, SMT Mid-Mount
Pin Count	24 Pins (Full-Featured, Double Row)
Mounting Style	SMT Mid-Mount (Sinking / Recessed)
Centerline Height (CL)	0.5mm
Body Length	8.21mm
Shell Type	Stainless Steel with Dual Side Retention Tabs
Current Rating	5A Max (VBUS pins), 1.25A (VCONN)
Voltage Rating	30V DC Max (USB PD 3.1 EPR: 48V)
Insertion Force	5–20N
Withdrawal Force	8–20N
Operating Life	10,000 Mating Cycles
Contact Material	Copper Alloy, Gold Plated (Contact Area)
Contact Resistance	≤40 mΩ
Insulation Resistance	≥100 MΩ
Withstanding Voltage	AC 100V (1 min)
Operating Temperature	-40°C to +85°C
Shell Material	Stainless Steel, Nickel Plated
Housing Material	LCP (Liquid Crystal Polymer), UL94V-0
Compliance	USB 2.0/3.2/USB4, USB PD 3.1, RoHS 3, REACH
Data Rate Support	Up to 40 Gbps (USB4 Gen 3)
Power Delivery	Up to 240W (48V/5A via USB PD 3.1 EPR)
PCB Retention	4 Solder Tabs + 2 Shell Brackets
Packaging	Tape & Reel
Certification	ISO 9001:2015

Related Part Numbers

USB-TC24-F24 – 24-pin USB-C female, SMT mid-mount, CL=0.5mm, L=8.21mm
USB-TC24-F25 – 24-pin USB-C female, SMT mid-mount, CL=0.47mm, L=8.7mm
USB-TC24-F10 – 24-pin USB-C female, SMT top-mount, CL=1.57mm, L=9.17mm
USB-TC24-F12 – 24-pin USB-C female, SMT right-angle, CL=1.32mm, L=8.21mm
USB-TC24-F18 – 24-pin USB-C female, SMT vertical, straight, full height
USB-TC16-F09 – 16-pin USB-C female, DIP vertical, H=6.5mm
USB-TC6-F02 – 6-pin USB-C female, SMT mid-mount, charging-only

Key Features

Key Features of USB4 Type-C Receptacle SMT Mid-Mount

⚡ 40Gbps USB4 Gen 3

Full 24-pin configuration supports USB4 Gen 3 up to 40 Gbps via 4×12 Gbps FRL lanes, compatible with Thunderbolt 3/4 and USB 3.2 Gen 2×2.

📏 Ultra-Low CL=0.5mm Profile

Sinking USB-C connector design with 0.5mm centerline height enables sub-8mm total device thickness for ultra-slim laptops and tablets.

🔋 240W USB PD Ready

Supports USB PD 3.1 EPR up to 48V/5A (240W), enabling fast charging for high-performance laptops and power stations.

🔒 Robust Mid-Mount Retention

Dual stainless steel shell brackets plus four SMT solder tabs provide superior mechanical retention for frequently used ports.

🛡️ Full EMI Shielding

Complete stainless steel shell with nickel plating ensures excellent EMI/RFI protection for high-speed signal integrity.

🌡️ High-Temp Reflow Compatible

LCP housing rated for 260°C peak reflow temperature, compatible with lead-free RoHS soldering processes.

♻️ RoHS & REACH Compliant

Lead-free plating and halogen-free materials meet EU and global environmental export standards.

🎬 Alt Mode Video Support

SBU pins enable DisplayPort and HDMI Alt Mode, delivering 8K video through a single connector.

Applications

Applications of SMT Mid-Mount USB-C Connector

💻

Ultra-Slim Laptops
Ultrabooks, Chromebooks, MacBook-style designs requiring sub-8mm thickness

📱

Tablets & 2-in-1s
iPad Pro competitors, Surface-style hybrids, Android tablets with keyboard docks

🖥️

Docking Stations
USB-C hubs, Thunderbolt docks, multi-port expansion stations for workspace setups

🎮

Gaming Handhelds
Steam Deck, ASUS ROG Ally, Nintendo Switch successors, portable consoles

🏭

Industrial Tablets
Ruggedized tablets, HMI panels, field service devices requiring slim profiles

🚗

Automotive Infotainment
In-car tablets, rear-seat entertainment, center console displays with USB-C charging

🔬

Medical Devices
Portable ultrasound, patient monitors, diagnostic tablets requiring slim waterproof designs

🌐

IoT & Wearables
Smart displays, kiosk terminals, digital signage controllers with space constraints

FAQ

What is a USB-C receptacle pinout 24 pin SMT mid-mount?

A USB-C receptacle pinout 24 pin SMT mid-mount is a full-featured USB Type-C female connector that mounts partially recessed (sinking) into the PCB, with a centerline height of just 0.5mm above the board surface. This 24 pin USB-C female connector uses surface mount technology (SMT) with dual-row 24-pin configuration, supporting all USB-C features including USB4 40 Gbps data, USB Power Delivery up to 240W, and Alternate Mode video output. The mid-mount design is critical for ultra-slim devices where standard top-mount connectors would exceed the available internal height.

What is the difference between mid-mount and top-mount USB-C receptacles?

SMT mid-mount USB-C connectors are recessed into a slot in the PCB, so the connector body sits partially below the board surface. This reduces the total height above the PCB to 0.5mm (CL=0.5mm) compared to 1.57mm for standard top-mount designs. Top-mount USB-C connectors sit entirely on top of the PCB and are easier to assemble but require more vertical clearance. Mid-mount is preferred for ultra-thin laptops, tablets, and any device where Z-height is constrained. Both use the same 24-pin layout and are compatible with all USB-C cables and features.

What is the USB-C 24-pin pinout and signal assignment?

The USB-C receptacle pinout uses a mirrored A/B side design with 24 pins total: SuperSpeed lanes — A2/A3 (TX1+/-), A10/A11 (RX2+/-), B2/B3 (TX2+/-), B10/B11 (RX1+/-); USB 2.0 — A6/A7 (D+/D-) and B6/B7 (D+/D-); Configuration — A5/B5 (CC1/CC2); Sideband — A8/B8 (SBU1/SBU2); Power — A4/A9/B4/B9 (VBUS) and A1/A12/B1/B12 (GND). In USB4 mode, the RX/TX pairs are repurposed as four 12 Gbps FRL lanes for 40 Gbps total. The CC pins handle cable orientation detection and USB PD negotiation, while SBU pins carry DisplayPort AUX or HDMI CEC for Alt Mode video.

Does this connector support USB4 and Thunderbolt?

Yes. The USB4 Type-C receptacle (USB-TC24-F24) with full 24-pin configuration is fully compatible with USB4 Gen 3 (40 Gbps) and Thunderbolt 3/4. The 24-pin layout includes all necessary SuperSpeed differential pairs that USB4 repurposes for FRL (Fixed Rate Link) signaling. To achieve full 40 Gbps, your PCB layout must maintain 90Ω differential impedance for all high-speed pairs and use appropriate USB4-certified cabling. The connector itself is electrically identical for USB 3.2 Gen 2 (20 Gbps), USB4 Gen 2 (20 Gbps), and USB4 Gen 3 (40 Gbps) — the difference lies in the controller and cable quality.

What does CL=0.5mm mean for USB-C mid-mount connectors?

CL=0.5mm refers to the centerline height — the distance from the PCB surface to the center of the USB-C port opening. For this CL=0.5mm USB-C mid-mount connector, the port sits only 0.5mm above the board, with the rest of the connector body recessed below. This compares to CL=1.57mm for standard top-mount and CL=1.32mm for some right-angle variants. The 0.5mm centerline enables device designs as thin as 6-7mm total thickness while still accommodating a full USB-C port with metal shell durability.

Are your USB-C connectors RoHS and REACH compliant?

Yes. Our RoHS USB-C connector products, including the USB-TC24-F24, comply with RoHS 3 (EU Directive 2015/863) and REACH SVHC regulations. We use lead-free solder plating, halogen-free LCP housing materials (UL94V-0), and environmentally controlled manufacturing processes. Full compliance certificates and material declarations are available for OEM/ODM customers requiring documentation for global export, CE marking, and supply chain audits.

What is the MOQ and lead time?

Standard MOQ for the USB-C receptacle pinout 24 pin SMT mid-mount (USB-TC24-F24) is 1,000 pieces with a 2–4 week lead time. Free engineering samples are available for qualified projects and OEM/ODM customers. Volume pricing and dedicated production schedules are offered for orders of 10,000+ pieces. Custom variants with different sinking depths (CL=0.8mm, CL=1.0mm), shell plating options, and waterproof sealing are available upon request.

Do you provide PCB layout guidelines for mid-mount USB-C?

Yes. We provide comprehensive technical documentation including 2D/3D CAD drawings, PCB footprint libraries for Altium, Eagle, and KiCad, and high-speed routing guidelines specific to SMT mid-mount USB-C layouts. Our engineering team offers design review services to ensure optimal signal integrity, including recommendations for differential pair routing, via placement, ground stitching, and cutout dimensions for the PCB sinking slot. All documentation is available after sample request approval. For USB4 40 Gbps designs, we also provide impedance simulation data and crosstalk analysis.

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