USB Type-C Connector
24-pin rectangular connector
Standards: USB Type-C Specification, USB Power Delivery, USB4, Thunderbolt 3/4
What is the USB-C pinout?
The USB Type-C Connector has 24 pins. Pin A1 is GND (ground). Pin A2 is TX1+ (data). Pin A3 is TX1- (data). Pin A4 is VBUS (power). Plus 20 more pins.
Standards: USB Type-C Specification, USB Power Delivery, USB4, Thunderbolt 3/4
Pin Assignment Table
| Pin | Signal | Type | Description |
|---|---|---|---|
| A1 | GND | ground | Ground |
| A2 | TX1+ | data | SuperSpeed TX+ (USB 3.x) |
| A3 | TX1- | data | SuperSpeed TX- (USB 3.x) |
| A4 | VBUS | power | Bus Power (USB PD up to 20V) |
| A5 | CC1 | data | Configuration Channel |
| A6 | D+ | data | USB 2.0 Data+ |
| A7 | D- | data | USB 2.0 Data- |
| A8 | SBU1 | analog | Sideband Use (Alt Mode) |
| A9 | VBUS | power | Bus Power |
| A10 | RX2- | data | SuperSpeed RX- (USB 3.x) |
| A11 | RX2+ | data | SuperSpeed RX+ (USB 3.x) |
| A12 | GND | ground | Ground |
| B12 | GND | ground | Ground |
| B11 | RX1+ | data | SuperSpeed RX+ (USB 3.x) |
| B10 | RX1- | data | SuperSpeed RX- (USB 3.x) |
| B9 | VBUS | power | Bus Power |
| B8 | SBU2 | analog | Sideband Use (Alt Mode) |
| B7 | D- | data | USB 2.0 Data- (shared) |
| B6 | D+ | data | USB 2.0 Data+ (shared) |
| B5 | CC2 | data | Configuration Channel |
| B4 | VBUS | power | Bus Power |
| B3 | TX2- | data | SuperSpeed TX- (USB 3.x) |
| B2 | TX2+ | data | SuperSpeed TX+ (USB 3.x) |
| B1 | GND | ground | Ground |
Signal Types
Common Applications
Need another printable connector reference?
Use the pinout as a working reference now, then jump to the full library or the next workflow when you need it.
Map this connector into your BOM workflow →The USB-C connector has 24 pins: Pin A1 (GND), Pin A2 (TX1+), Pin A3 (TX1-), and Pin A4 (VBUS, 5-20V). Plus 20 more pins. Common in Smartphones and Laptops.
USB-C Pinout & Signal Explanation
USB-C (Type-C) is a 24-pin reversible connector that supports USB 3.2, USB4, Thunderbolt, and Power Delivery. Its complexity comes from its reversibility: the receptacle has dual sets of data pins, and the plug determines the orientation via the CC channel.
Wiring Tips & Best Practices
Unlike older USB standards, you cannot simply 'splice' a USB-C cable for power. The Configuration Channel (CC) pins require specific pull-up or pull-down resistors (5.1kΩ or 56kΩ) to negotiate power delivery and role (Host vs Device).
Common Issues
Using cheap 'charge-only' cables for data transfer will fail because they lack the D+/D- and high-speed pairs. Always check cable ratings for 100W PD if powering laptops.
Why Use Interactive Diagrams?
- Accuracy: Hover over pins to see exact signal names and descriptions
- Clarity: Color-coded by signal type (power, ground, data)
- Printable: Export clean diagrams for shop floor reference