If you’re a hardware engineer or sourcing professional selecting USB-C connectors for your next PCB design, understanding the different USB-C connector types by pin count, mounting style, and waterproof rating is critical. USB Type-C has become the universal connector for consumer electronics, industrial devices, automotive systems, and charging applications. However, many engineers and buyers are surprised to discover that there are numerous USB type c connector types available, each optimized for different performance, cost, and mechanical requirements.
Choosing the wrong connector can lead to PCB redesign, higher BOM costs, or compliance failures. This guide breaks down all major USB-C connector types to help you make the right decision for your product.
What Is a USB-C Connector?
A USB-C connector is a 24-pin USB connector system with a reversible, symmetrical design. Unlike previous USB generations, USB-C delivers:
- Reversible design: No orientation required—plugs in either way
- Power Delivery (PD): Up to 240W (USB PD 3.1 Extended Power Range)
- Data transmission: From USB 2.0 (480 Mbps) to USB4 v2 (80 Gbps)
- Video output: Native DisplayPort Alt Mode and HDMI Alt Mode support
For a detailed breakdown of each pin’s function, see our USB-C Pinout Guide. If you need help selecting the right connector for your specific application, refer to our USB-C Connector Selection Guide.
USB-C Connector Types by Pin Count
Pin count is the most important technical differentiator for USB-C connectors. It directly determines data speed, power capability, and cost.
24-Pin USB-C Connectors
24-pin USB-C connectors are the full-featured standard, supporting all USB-C capabilities.
Key Features:
- Full USB 3.2 Gen 2×2 (20 Gbps) and USB4 (40 Gbps) support
- USB4 v2 up to 80 Gbps (asymmetric mode)
- DisplayPort Alt Mode for video output
- USB Power Delivery up to 240W
- Full TX/RX differential pairs for high-speed data
Typical Applications:
- Laptops and tablets
- Docking stations and hubs
- External GPUs and high-performance peripherals
- Monitors and displays
Trade-offs:
- Higher cost than 16-pin variants
- Larger PCB footprint
- More complex PCB routing requirements
For products requiring maximum performance, browse our 24-Pin USB-C Connectors collection.
16-Pin USB-C Connectors
16-pin USB-C connectors offer a cost-optimized solution for USB 2.0 + charging applications.
Key Features:
- USB 2.0 data support (480 Mbps)
- USB Power Delivery up to 100W (with appropriate CC logic)
- Reduced pin count simplifies PCB design
- Lower BOM cost than 24-pin
Typical Applications:
- Power banks and portable chargers
- Bluetooth speakers and headphones
- IoT devices and smart home products
- Budget smartphones and accessories
Trade-offs:
- No USB 3.x high-speed data
- No DisplayPort Alt Mode
- Limited to USB 2.0 speeds
6-Pin USB-C Connectors
6-pin USB-C connectors are the minimalist, lowest-cost option for charging-only applications.
Key Features:
- Charging only (no data lines)
- VBUS, GND, and CC pins only
- Lowest BOM cost
- Simplest PCB layout
Typical Applications:
- LED lighting products
- Simple charging adapters
- Low-cost consumer electronics
- Toys and basic gadgets
Trade-offs:
- No data transmission capability
- No USB PD negotiation (fixed voltage or basic resistor-based)
- Limited to basic 5V charging
USB-C Connector Types by Mounting Style
Mounting style determines how the connector sits on the PCB and affects mechanical stability, assembly process, and device thickness.
Mid-Mount USB-C Connectors
Mid-mount connectors sit flush with the PCB edge, with the body recessed into the board.
Advantages:
- Lower overall device profile
- Better mechanical strength and retention
- Protected from side-impact damage
- Ideal for ultra-thin designs
Best For: Ultrabooks, tablets, smartphones, and any device where thickness is critical.
Browse our Mid-Mount USB-C Connectors for specific product options.
Top-Mount USB-C Connectors
Top-mount connectors sit on top of the PCB, with the shell soldered to the board surface.
Advantages:
- Easiest assembly (standard SMT process)
- Lower PCB fabrication cost
- Widest availability from suppliers
- Simplest inspection and rework
Best For: General consumer electronics, desktop peripherals, and cost-sensitive products.
Vertical USB-C Connectors
Vertical connectors stand perpendicular to the PCB, with the port facing upward.
Advantages:
- Saves horizontal PCB space
- Ideal for stacked PCB designs
- Direct vertical cable insertion
- Good for desktop docking applications
Best For: Desktop docks, charging stations, and space-constrained horizontal layouts.
Right-Angle USB-C Connectors
Right-angle connectors extend parallel to the PCB edge, with the port facing sideways.
Advantages:
- Most common form factor for portable devices
- Natural cable routing along device edge
- Good strain relief for cable connections
- Wide mechanical housing compatibility
Best For: Portable electronics, handheld devices, and any product with edge-mounted ports.
USB-C Connector Types by Waterproof Rating
For harsh environments, waterproof USB-C connectors provide essential protection against moisture and dust.
Standard USB-C Connectors
IP Rating: None (IPX0)
Standard USB-C connectors offer no environmental sealing. They are suitable for:
- Indoor consumer electronics
- Climate-controlled environments
- Cost-sensitive applications
Waterproof USB-C Connectors
IP Ratings: IP67 (dust-tight, immersion up to 1m) and IP68 (extended immersion)
Key Features:
- Silicone or rubber gaskets for sealing
- Threaded or bayonet locking mechanisms
- Corrosion-resistant shell materials
- Protective caps for unmated conditions
Typical Applications:
- Outdoor equipment and cameras
- Automotive electronics
- Industrial control systems
- Marine and marine-adjacent devices
For waterproof solutions, explore our Waterproof USB-C Connectors range.
USB-C Connector Types by Data Transfer Standard
The data standard determines the connector’s bandwidth capability and often correlates with pin count.
USB 2.0 Type-C Connectors
Speed: 480 Mbps (High Speed)
- Typically implemented with 16-pin or reduced 24-pin configurations
- Sufficient for audio, HID devices, and basic peripherals
- Lowest cost for data-enabled designs
USB 3.2 Type-C Connectors
Speeds: 5 Gbps (Gen 1), 10 Gbps (Gen 2), 20 Gbps (Gen 2×2)
- Requires full 24-pin implementation
- Uses two or four high-speed differential pairs
- Backward compatible with USB 2.0
USB4 Type-C Connectors
Speed: 40 Gbps (USB4), 80 Gbps (USB4 v2)
- Mandatory 24-pin configuration
- Tunneling of USB 3.2, DisplayPort, and PCIe
- Requires active cable for full performance
- Most complex PCB routing requirements
Best For: High-performance workstations, professional video equipment, and external GPU enclosures.
USB-C Connector Types by Application
Different industries have unique requirements that influence connector selection.
Consumer Electronics
- Products: Smartphones, tablets, laptops, wearables
- Priority: Thin profile, high reliability, cost optimization
- Typical Choice: 16-pin or 24-pin top-mount/mid-mount
Industrial Equipment
- Products: HMI panels, PLCs, industrial controllers
- Priority: Durability, EMI shielding, long-term availability
- Typical Choice: 24-pin with metal shell, IP67 optional
Automotive Electronics
- Products: EV chargers, infotainment systems, OBD devices
- Priority: Vibration resistance, temperature range, waterproofing
- Typical Choice: 24-pin waterproof (IP67+), right-angle or mid-mount
Medical Devices
- Products: Diagnostic equipment, portable monitors, patient devices
- Priority: Reliability, sterilization compatibility, safety isolation
- Typical Choice: 24-pin with enhanced isolation, sealed variants
Comparison Table of USB-C Connector Types
| Type | Pins | Data Speed | Max Power | Video Output | Waterproof | Best For |
|---|---|---|---|---|---|---|
| 6-Pin | 6 | None | 60W (5V/3A) | No | No | Cost-sensitive charging-only devices |
| 16-Pin | 16 | USB 2.0 (480 Mbps) | 100W | No | Optional | Budget IoT, audio accessories |
| 24-Pin (USB 3.2) | 24 | Up to 20 Gbps | 100W | Yes (DP Alt) | Optional | Laptops, docking stations |
| 24-Pin (USB4) | 24 | Up to 80 Gbps | 240W | Yes (DP Alt) | Optional | High-performance workstations |
| Waterproof IP67 | 16/24 | Varies | Varies | Varies | IP67 | Outdoor, automotive, industrial |
| Waterproof IP68 | 16/24 | Varies | Varies | Varies | IP68 | Marine, harsh environments |
How to Choose the Right USB-C Connector Type
Use this decision framework for your next design:
1. Consider Data Speed
- Charging only → 6-pin
- USB 2.0 peripherals → 16-pin
- High-speed data or video → 24-pin (USB 3.2 or USB4)
2. Consider Power Requirements
- ≤ 15W (5V/3A) → 6-pin with basic resistor
- ≤ 100W → 16-pin or 24-pin with PD controller
- ≤ 240W → 24-pin with EPR PD controller
3. Consider Mounting Method
- Ultra-thin device → Mid-mount
- Standard design → Top-mount
- Space-constrained layout → Vertical or right-angle
4. Consider Environmental Conditions
- Indoor consumer → Standard
- Outdoor/automotive → IP67
- Marine/submersion → IP68
For a detailed step-by-step selection process, see our USB-C Connector Selection Guide.
Frequently Asked Questions About USB-C Connector Types
Are all USB-C connectors 24-pin?
No. While the USB-C standard defines a 24-pin interface, manufacturers produce simplified variants with 16 pins (for USB 2.0 + charging) and 6 pins (for charging only). The 24-pin version is required only for USB 3.x, USB4, and DisplayPort Alt Mode.
What is the difference between 16-pin and 24-pin USB-C connectors?
16-pin USB-C connectors support USB 2.0 data (480 Mbps) and charging up to 100W. 24-pin connectors add high-speed differential pairs for USB 3.2 (up to 20 Gbps), USB4 (up to 80 Gbps), and DisplayPort video output. For charging-only applications, 16-pin offers significant cost savings.
Which USB-C connector is best for charging-only devices?
For pure charging applications where data is not required, a 6-pin USB-C connector is the most cost-effective choice. If you need basic USB 2.0 data alongside charging, upgrade to a 16-pin connector.
What USB-C connector supports USB4?
Only 24-pin USB-C connectors support USB4’s 40 Gbps throughput, and USB4 v2’s 80 Gbps mode. These require all four high-speed differential pairs (TX1/RX1, TX2/RX2) and proper impedance-controlled routing.
Can I use a 16-pin connector for USB 3.0?
No. USB 3.0 and higher require the additional high-speed differential pairs that are only available in 24-pin connectors. A 16-pin connector is limited to USB 2.0 speeds (480 Mbps).
Are waterproof USB-C connectors available in all pin counts?
Waterproof USB-C connectors are most commonly available in 16-pin and 24-pin configurations. 6-pin waterproof variants exist but are less common due to limited demand. IP67 and IP68 ratings typically apply to the full 24-pin versions for industrial and automotive applications.
