As electronic devices continue to evolve towards thinner profiles and more versatile functions,
the USB Type-C connector has become widely adopted for its support of high-speed data transmission,
reversible plug orientation, and strong power delivery capabilities. When designing a PCB,
choosing the right mounting style for the USB Type-C receptacle is crucial.
This article breaks down the three most common mounting styles—On-board,Mid-mount, andVertical—and compares their characteristics and use cases.
1. On-board (Straight Angle / SMT Mounting)
Structural Features
The on-board connector is mounted directly on the surface of the PCB, usually using Surface Mount Technology (SMT).
Its pin arrangement is straightforward and compact, making it a popular choice for space-constrained consumer electronics.
Advantages
-
Simple assembly process; fully SMT-compatible, boosting manufacturing efficiency
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Moderate height that fits most mechanical design requirements
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Flexible routing; ideal when signal processing occurs on the PCB surface
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Broad compatibility with standard USB Type-C plugs
Considerations
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The overall connector height is relatively higher, making it less suitable for ultra-thin product designs
2. Mid-mount (Recessed / Embedded)
Structural Features
The mid-mount connector is recessed into a slot in the PCB, with the body partially embedded. It often uses a hybrid SMT and DIP mounting approach to ensure signal stability and mechanical strength.
Advantages
-
Lowest height profile; ideal for ultra-thin products like laptops and tablets
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Enhanced mechanical strength due to reinforced pin structure
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Improved connection reliability; reduces the risk of cold solder joints from mechanical stress
Considerations
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Requires complex PCB design, including slotting and extra vias
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More complex production and assembly processes; demands high-precision placement equipment
3. Vertical Mount (Top-entry / Perpendicular)
Structural Features
The vertical mount connector is installed perpendicular to the PCB, allowing the plug to be inserted from above. This style is commonly used in docking bases, test interfaces, or vertically constrained structures.
Advantages
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Saves horizontal space; suitable for tightly packed internal layouts
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Ideal for board-to-board connections; widely used in embedded devices, USB hubs, and testing tools
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Top-facing interface improves user accessibility and ease of use
Considerations
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Requires more vertical clearance; not suitable for slim-profile devices
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Needs mechanical design to protect the port from dust or liquid ingress
Mounting Style Comparison Table
Feature
|
On-board
|
Mid-mount
|
Vertical
|
Height
|
Medium
|
Lowest
|
Highest
|
Mechanical Strength
|
Medium
|
High (especially hybrid)
|
Medium to High
|
Assembly Complexity
|
Lowest
|
Moderate
|
Depends on design
|
PCB Design
|
Simple
|
More complex (requires slot)
|
Moderate
|
Typical Use Cases
|
Smartphones, dongles
|
Ultra-thin laptops/tablets
|
Test jigs, docking bases
|
Comparison Illustration
Illustration comparing the mounting styles visually by JAE
How to Choose the Right Receptacle Style?
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For ultra-thin designs with space constraints, themid-mountis your best option.
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For cost-effective mass productionwith minimal space concerns, choose theon-boardmount.
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For vertically accessed or open-top interfaces, thevertical mountis practical and user-friendly.
Conclusion
Each mounting style serves different design goals and usage scenarios. By understanding the structural differences of USB Type-C receptacles, engineers can make better decisions early in product development. A well-chosen connector style can improve both product performance and reliability, while also optimizing space and manufacturing cost.
Looking for the right USB Type-C connector for your project?Feel free to contact us for samples and technical support!
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