USB-TC24-F24 — 24 Pin USB4 Mid-Mount USB-C Receptacle (Sinking), CL=0.5mm L=8.21mm, 40Gbps
24 Pin USB4 Mid-Mount USB-C Receptacle — Product Overview
The USB-TC24-F24 is a 24 pin USB4 mid-mount USB-C receptacle with SMT termination, a sinking (mid-mount) body, CL=0.5mm and L=8.21mm. It carries the full USB Type-C signal set: four SuperSpeed differential pairs for high-speed data, USB 2.0 D+/D− for backward compatibility, CC1/CC2 for orientation detection and Power Delivery negotiation, VBUS/GND for power and ground, and SBU1/SBU2 for Alternate Mode functions. It supports USB4 Gen 3 (up to 40 Gbps) and DisplayPort Alt Mode signal routing, and a pin assignment table is included below for PCB integration.
The SMT mid-mount USB-C connector format sinks the connector body into a routed PCB cutout, so the connector sits lower relative to the board. Its centerline (CL) is 0.5mm from the PCB surface, compared with 1.57mm for a standard top-mount receptacle. This makes it suitable for ultra-thin devices, tablets, docking stations, and compact embedded systems where vertical clearance is limited. The mid-mount design requires a routed PCB cutout, and the SMT termination supports automated reflow soldering in high-volume production.
This page is intended as a working reference for PCB designers, hardware engineers, and procurement teams. The pin assignment table below follows the standard USB Type-C specification and should be verified against the connector’s mechanical drawing before finalizing the PCB layout. For a broader guide covering the differences between 24-pin, 16-pin, and 6-pin USB-C connectors, see the USB-C Connector Pinout Explained guide.
USB4 Mid-Mount USB-C Receptacle — Full Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Part Number | USB-TC24-F24 | USB4 mid-mount (sinking) receptacle |
| Connector Type | USB Type-C Female Receptacle | 24-pin full-featured |
| Mounting Style | SMT Mid-Mount (Sinking) | Requires routed PCB cutout |
| Pin Count | 24 Pins | Full USB-C signal set |
| Body Length (L) | 8.21 mm | — |
| Centerline (CL) | 0.5 mm | Distance from PCB surface to connector centerline |
| USB Standard | USB4 Gen 3 | Up to 40 Gbps |
| Power Delivery | USB PD | Up to 100W (20V × 5A) |
| Current Rating | 5A max | VBUS and GND |
| Voltage Rating | 20V DC | — |
| Contact Material | Phosphor Bronze | Gold plated |
| Shell Material | Stainless Steel | EMI shielding |
| Insulator Material | LCP, UL94V-0 | High-temp, 260°C reflow |
| Operating Temperature | −25°C to +85°C | — |
| Mating Cycles | 10,000 cycles | Durability |
| Compliance | RoHS 3, REACH | Global export ready |
| Packaging | Tape & Reel | SMT assembly ready |
24 Pin USB Type-C Receptacle — Pin Assignment Table
| Pin | Signal | Description | Pin | Signal | Description |
|---|---|---|---|---|---|
| A1 | GND | Ground | B12 | GND | Ground |
| A2 | TX1+ | SuperSpeed TX Pair 1 (+) | B11 | RX1+ | SuperSpeed RX Pair 1 (+) |
| A3 | TX1− | SuperSpeed TX Pair 1 (−) | B10 | RX1− | SuperSpeed RX Pair 1 (−) |
| A4 | VBUS | Bus Power | B9 | VBUS | Bus Power |
| A5 | CC1 | Configuration Channel 1 | B8 | SBU2 | Sideband Use 2 |
| A6 | D+ | USB 2.0 Data (+) | B7 | D− | USB 2.0 Data (−) |
| A7 | D− | USB 2.0 Data (−) | B6 | D+ | USB 2.0 Data (+) |
| A8 | SBU1 | Sideband Use 1 | B5 | CC2 | Configuration Channel 2 |
| A9 | VBUS | Bus Power | B4 | VBUS | Bus Power |
| A10 | RX2− | SuperSpeed RX Pair 2 (−) | B3 | TX2− | SuperSpeed TX Pair 2 (−) |
| A11 | RX2+ | SuperSpeed RX Pair 2 (+) | B2 | TX2+ | SuperSpeed TX Pair 2 (+) |
| A12 | GND | Ground | B1 | GND | Ground |
The A and B rows are symmetric about the connector’s central origin. When the plug is inserted upright, A5 (CC1) connects to the cable’s CC line. When flipped, B5 (CC2) takes over. This is what enables reversible insertion without mechanical switches inside the connector. Pin assignments follow the USB Type-C Connector Specification; for official requirements refer to the USB Type-C Cable and Connector Specification published by USB-IF.
Why Engineers Choose This SMT Mid-Mount USB-C Connector for Ultra-Thin Designs
Complete 24-Pin USB-C Pin Assignment Reference
The page includes the full pin mapping for the 24-pin USB Type-C receptacle, covering all four SuperSpeed differential pairs, USB 2.0 D+/D−, CC1/CC2, VBUS/GND, and SBU1/SBU2. Engineers can use it directly for PCB signal routing and controller pin planning.
SMT Mid-Mount USB-C Connector — CL=0.5mm Low Profile
The mid-mount design sinks the connector body into a PCB cutout, bringing the connector centerline (CL) to 0.5mm from the board surface, lower than the 1.57mm of a standard top-mount receptacle. This is particularly useful in ultra-thin devices, tablets, and compact embedded systems where vertical clearance is limited.
5A Current Rating — USB Power Delivery up to 100W
The 24-pin receptacle is rated for 5A and 20V DC, supporting USB Power Delivery up to 100W (20V × 5A) when paired with a suitable PD controller. The four VBUS pins run in parallel to reduce contact resistance and minimize voltage drop. For PD specification details, see the USB Power Delivery specification.
USB4 Gen 3 — 40 Gbps High-Speed Data
The 24-pin connector includes four SuperSpeed differential pairs supporting USB 3.2 Gen 2 (10 Gbps) and USB4 Gen 3 (40 Gbps). In USB4 mode, the four high-speed pairs operate as two 20 Gbps lanes for a total of 40 Gbps. High-speed pairs require controlled-impedance routing with matched trace lengths.
CC1/CC2 Configuration Channels — Orientation & PD Negotiation
Pins A5 and B5 carry the CC lines used for plug orientation detection, power role establishment, and USB PD negotiation. Both CC1 and CC2 must be routed because the connector orientation is not known in advance.
RoHS 3 & REACH Compliant — Globally Export Ready
Lead-free construction meets RoHS 3 and REACH SVHC substance regulations, ensuring unrestricted export to regulated markets for consumer, industrial, and embedded applications.
USB-TC24-F24 vs USB-TC24-F11: Which Mid-Mount USB-C Receptacle Do You Need?
Both are 24-pin SMT mid-mount USB-C receptacles. The USB-TC24-F11 supports USB 3.2 Gen 2 (10 Gbps), while the USB-TC24-F24 supports USB4 Gen 3 (40 Gbps) with a CL=0.5mm sinking body. Choose the F24 when your design needs USB4 bandwidth, and the F11 for 10 Gbps designs. Not sure which fits? Contact our engineers with your PCB cutout, speed, and current requirements.
Where to Use This USB-C Mid-Mount PCB Connector — Applications for Compact Electronics
24 Pin USB4 Mid-Mount USB-C Receptacle — Frequently Asked Questions
What is the pin assignment of a 24-pin USB-C receptacle?
A 24-pin USB Type-C female receptacle has two rows of 12 pins (A and B sides) carrying four SuperSpeed differential pairs, USB 2.0 D+/D−, CC1/CC2 configuration channels, VBUS/GND power and ground, and SBU1/SBU2 sideband signals. The full assignment is in the pin assignment table above. This signal set supports USB4 Gen 3 data, USB Power Delivery, and DisplayPort Alt Mode video output. For a broader explanation, see the USB-C Connector Pinout Explained guide.
What is the difference between a 24-pin and 16-pin USB-C connector?
A 24-pin USB-C receptacle is full-featured: it supports USB4 SuperSpeed data (40 Gbps), USB Power Delivery, DisplayPort Alt Mode video output, and reversible insertion. A 16-pin USB-C receptacle supports USB 2.0 (480 Mbps) and USB PD charging up to 5A, but omits the high-speed SuperSpeed pairs and Alt Mode pins — making it suitable for cost-sensitive charging-only or low-speed data applications. If your design requires USB4 data or video output, the 24-pin configuration is required.
Why do I need to route both CC1 and CC2 pins?
Pins A5 (CC1) and B5 (CC2) are the Configuration Channel lines. Because the USB-C plug can be inserted in either orientation, the system does not know in advance which CC pin will be connected to the cable’s CC line. Both must be routed to the PD controller so that orientation detection and Power Delivery negotiation work correctly regardless of how the cable is inserted.
What is a mid-mount USB-C connector used for?
A mid-mount USB-C connector is designed to sit partially below the PCB surface, with its centerline (CL) 0.5mm from the board surface on this model. This is useful for ultra-thin devices, tablets, and compact embedded systems where vertical clearance is limited. The mid-mount design requires a routed PCB cutout that matches the connector body shape, and the SMT termination supports automated reflow soldering in production.
How should the USB-C high-speed pairs be routed on the PCB?
The SuperSpeed differential pairs (TX1+/−, RX1+/−, RX2+/−, TX2+/−) should be routed with controlled 90Ω differential impedance, matched trace lengths within each pair, and a continuous ground reference plane beneath the traces. Minimize vias in high-speed paths and use ground stitching vias near any required layer transitions. For additional PCB layout guidance, refer to our USB-C Connector Pinout Explained guide.
Does this connector support USB4 and USB Power Delivery?
Yes. The USB-TC24-F24 supports USB4 Gen 3 up to 40 Gbps and USB Power Delivery up to 100W (20V × 5A). The four parallel VBUS/GND pins reduce contact resistance to support high-current charging performance.
Can I get PCB footprint files?
Yes. Vistar Electronics provides 2D drawings, 3D STEP models, and recommended PCB footprint layouts upon request. Contact our engineering team at sales@vistarelectronics.com for design files.
What is the MOQ and can I get a free sample?
Standard MOQ is 1,000 pieces with a 2–4 week production lead time. Free samples are available for qualified engineering and product development projects. Contact sales@vistarelectronics.com with your company details, project application, and part number (USB-TC24-F24).
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