You are designing a new portable display. The PCB is laid out, the components are placed, and the BOM is nearly finalized. Then you realize—the HDMI connector you specified is a Type A, but the enclosure only has room for a connector half that size. You are now looking at a mechanical redesign, a new PCB footprint, or a compromise on functionality.
This scenario plays out in engineering departments more often than it should. HDMI has been the dominant audio-visual interface for over two decades, but the connector itself comes in multiple physical forms—each with the same 19-pin electrical interface, yet completely different mechanical footprints. Specifying the wrong one can derail a product design, delay production, and create compatibility issues in the field.
Whether you are designing a consumer television, an automotive infotainment system, a portable camera, or a medical display, understanding HDMI connector types is essential. This guide covers every variant—Type A, C, D, and E—their dimensions, pin configurations, applications, and how to choose the right one for your design.For a broader overview of connector types across different interfaces, see our Ultimate Phone Jack Guide .
What Is an HDMI Connector?
HDMI stands for High-Definition Multimedia Interface. It is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device to a compatible display, projector, or digital audio device. HDMI was developed as a digital replacement for analog video standards, combining audio and video into a single cable.
An HDMI connector is the physical interface that establishes this connection. HDMI connectors contain multiple pins—typically 19—that carry digital video, audio, control signals, and a small 5-volt power line.
Why Are There Different HDMI Connector Types?
The original HDMI Type A connector was designed for televisions and desktop monitors—devices with ample space for a full-sized port. As HDMI expanded into smaller devices—digital cameras, camcorders, tablets, smartphones, and automotive systems—the need for smaller connectors became apparent.
The HDMI specification now defines multiple connector types to accommodate different device sizes and use cases:
- Type A (Standard): Defined in HDMI 1.0, designed for full-sized consumer electronics
- Type C (Mini): Defined in HDMI 1.3, designed for portable devices
- Type D (Micro): Defined in HDMI 1.4, designed for mobile devices
- Type E (Automotive): Defined in HDMI 1.4, designed for vehicle applications
External link: For the official HDMI connector naming guidelines, refer to the HDMI Licensing Administrator .
HDMI Connector Type Comparison Table
| Connector Type | Official Name | Dimensions | Pins | Primary Applications |
|---|---|---|---|---|
| Type A | HDMI Connector | 13.9 mm × 4.45 mm | 19 | TVs, monitors, gaming consoles, projectors |
| Type C | HDMI Mini Connector | 10.42 mm × 2.42 mm | 19 | DSLR cameras, camcorders, tablets |
| Type D | HDMI Micro Connector | 5.83 mm × 2.20 mm | 19 | Smartphones, action cameras, ultra-thin devices |
| Type E | Automotive HDMI | Varies (automotive form factor) | 19 | Car infotainment, navigation systems |
All four connector types carry the same 19 signals. The signal functions remain identical across types. Only the physical shape and pin placement change.
Internal link: Explore our HDMI Connector portfolio—available in Type A, C, D, and E configurations with various mounting options.
HDMI Type A Connector (Standard HDMI)
Type A is the most common HDMI connector and the original design introduced with HDMI 1.0. It is what most people think of when they hear “HDMI port.”
Physical specifications:
- Plug dimensions: 13.9 mm × 4.45 mm
- Receptacle dimensions: 14 mm × 4.55 mm
- Pins: 19
- Pin pitch: 0.5 mm
Electrical specifications:
- Bandwidth: Up to 48 Gbps with HDMI 2.1
- Voltage rating: 40 V DC typical
- Current rating: 0.5 A per contact
- Mating cycles: Up to 10,000 cycles
Applications:
- Televisions and monitors
- Desktop computers and gaming consoles
- Projectors and home theater systems
- Set-top boxes and media players
Market share: Type A connectors led the HDMI market with 75.92% share in 2025. This dominance reflects the widespread adoption of HDMI in consumer electronics.
Type A is the preferred choice whenever device size permits. It provides the most robust mechanical connection and the most secure fit, making it less prone to accidental disconnection compared to smaller variants.
Internal link: View our HDMI Type A Connectors —available in right-angle, vertical, SMT, and through-hole configurations.
HDMI Type C Connector (Mini HDMI)
Type C, officially called the HDMI Mini Connector, was introduced with the HDMI 1.3 specification. It is a compact version of Type A designed for portable devices.
Physical specifications:
- Dimensions: 10.42 mm × 2.42 mm
- Surface area: Approximately 60% less than Type A
- Pins: 19
Pin assignment differences:
While Type C has the same 19 pins as Type A, the pin assignment is different:
- All positive signals of the differential pairs are swapped with their corresponding shield
- DDC/CEC Ground is assigned to pin 13 instead of pin 17
- CEC is assigned to pin 14 instead of pin 13
- The reserved pin is 17 instead of pin 14
Type C connectors can be connected to Type A ports using a Type A-to-Type C cable.
Applications:
- DSLR cameras and camcorders
- Tablets and portable monitors
- Thin laptops and smaller graphics cards
External link: For detailed specifications on Mini HDMI, refer to the HDMI Specification Overview .
HDMI Type D Connector (Micro HDMI)
Type D, officially the HDMI Micro Connector, was introduced with the HDMI 1.4 specification. It is the smallest HDMI connector, designed for mobile and ultra-portable devices.
Physical specifications:
- Dimensions: 5.83 mm × 2.20 mm
- Alternate measurement: 6.4 mm × 2.8 mm
- Pin pitch: 0.40 mm
- Pins: 19
For comparison:
- Micro HDMI (Type D): 5.83 mm × 2.20 mm
- Micro-USB: 6.85 mm × 1.8 mm
- USB Type-A: 11.5 mm × 4.5 mm
Like Type C, Type D retains the same 19-pin configuration but with a different pin layout due to the constraints of the smaller form factor.
Applications:
- Smartphones and tablets
- Action cameras
- Ultra-thin laptops and ultrabooks
Internal link: Explore our Micro HDMI Connectors for space-constrained portable device designs.
HDMI Type E Connector (Automotive HDMI)
Type E is the automotive-grade HDMI connector, introduced with the HDMI 1.4 specification. It is specifically designed to meet the unique demands of the motoring environment.
Key characteristics:
- Vibration and shock resistance: Type E connectors are built with a structure that is more resistant to vibration and shock compared to consumer HDMI products
- Fully shielded design: A metal shell reduces electromagnetic interference (EMI)
- Locking feature: Prevents the cable from loosening due to vibration
- Audible locking sound: Prevents half-mating issues
- Coding polarizations: Eliminates misconnections
- USCAR-2 compliance: Meets automotive connector quality standards
Electrical specifications (JAE MX50 series example):
- Positions: 19
- Contact pitch: 1.5 mm
- Rated current: 0.5 A per position
- Contact material: Brass with gold plating in the connecting area
- Housing material: Glass-filled SPS (high-temperature thermoplastic)
- Shell material: Copper alloy with tin plating
Environmental specifications:
- Temperature/Humidity: 40 cycles between -40°C to +100°C
- Thermal shock: 100 cycles between -40°C to +100°C
- Durability: 10 cycles
Applications:
- Car navigation systems
- Car audio systems
- In-vehicle infotainment systems
- Seatback displays
- Dashboard displays
Market growth: Type E automotive connectors are forecast to expand at 8.32% CAGR through 2031. The automotive infotainment application segment is expected to post the fastest growth at 9.74% CAGR to 2031.
External link: For automotive connector standards, refer to SAE USCAR-2 —the performance specification for automotive electrical connector systems.
HDMI Type B: The Connector That Never Was
HDMI Type B was conceptualized as a larger connector with 29 pins and six differential pairs instead of three, designed for very high-resolution displays such as WQUXGA (3840×2400). It was electrically compatible with dual-link DVI-D.
However, Type B was never used in any commercial product. With the introduction of HDMI 1.3, the maximum bandwidth of single-link HDMI exceeded that of dual-link DVI-D, eliminating the need for a dual-link HDMI connector.
For practical purposes, Type B does not exist in the market. Engineers and buyers should ignore it when specifying connectors.
HDMI Connector Types vs HDMI Versions: A Critical Distinction
One of the most common sources of confusion is the difference between HDMI connector types and HDMI versions.
HDMI connector types (A, C, D, E) are physical form factors. They determine the shape and size of the connector and which devices it fits into.
HDMI versions (1.4, 2.0, 2.1) are feature sets and bandwidth specifications. They determine what the connection can do—resolution, refresh rate, audio return channel, Ethernet channel, and other capabilities.
| Aspect | Connector Type | HDMI Version |
|---|---|---|
| What it defines | Physical shape and size | Bandwidth and features |
| Examples | Type A, Type C, Type D, Type E | 1.4, 2.0, 2.1 |
| Interchangeability | Not interchangeable (different sizes) | Backward compatible |
| Key specification | Dimensions, pin count | Data rate, resolution support |
Critical point: HDMI 2.1 is not a connector type. HDMI 2.1 uses the same physical connectors (Type A, C, D, E) as earlier versions. A Type A connector can support HDMI 2.1, and a Type A connector can support HDMI 1.4. The connector type does not determine the version capability—the cable and the device electronics do.
HDMI 2.1 specifications:
- Bandwidth up to 48 Gbps
- Video resolution up to 10K
- Supports 4K120Hz and 8K60Hz
- Backward compatible with previous HDMI versions
- Features include eARC (Enhanced Audio Return Channel), VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode), and QFT (Quick Frame Transport)
External link: For the official HDMI 2.1 specification, refer to the HDMI Specification 2.1 .
HDMI Connector Mounting Styles
HDMI connectors are available in multiple PCB mounting configurations to accommodate different board layouts and manufacturing processes.
Right-Angle (Horizontal)
The connector lies flat with the insertion axis parallel to the PCB.
- Best for: Edge-mounted designs, thin devices, consumer electronics
- Trade-offs: Requires more board area in the X-Y plane
- Available in: Through-hole, SMT, and mid-mount SMT
Vertical
The connector stands upright with the insertion axis perpendicular to the PCB.
- Best for: Designs where board space is limited but height is available
- Trade-offs: Higher profile above the PCB
Mid-Mount SMT
A recessed variant that lowers the overall profile by partially embedding the connector into the PCB.
- Best for: Ultra-thin devices, space-constrained designs
- Trade-offs: More complex PCB fabrication
Through-Hole (DIP)
Pins pass through drilled holes in the PCB and are soldered on the reverse side.
- Best for: High mechanical strength, vibration-resistant applications
- Trade-offs: Requires holes through the board, not compatible with double-sided placement
Surface Mount (SMT)
The connector sits on the PCB surface with flat terminals soldered to pads.
- Best for: High-volume automated assembly, double-sided PCBs
- Trade-offs: Lower mechanical strength than through-hole
Internal link: For guidance on selecting the right PCB mounting method, see our article SMT vs Through-Hole Tactile Switch —the principles apply broadly to all connector types.
Internal link: Explore our HDMI Connector Mounting Options —including right-angle, vertical, SMT, and through-hole configurations.
HDMI Alt Mode for USB Type-C
HDMI signals can also be transmitted over USB Type-C connectors using HDMI Alt Mode. This allows HDMI-enabled source devices to utilize a USB Type-C connector to directly connect to HDMI-enabled displays without the need for protocol and connector adapters or dongles.
This is not a new HDMI connector type—it is an alternative physical interface that carries HDMI signals. For engineers designing modern portable devices, HDMI Alt Mode offers flexibility in port selection.
External link: For more information on HDMI Alt Mode for USB Type-C, refer to the HDMI Alt Mode for USB Type-C page.
How to Choose the Right HDMI Connector
When selecting an HDMI connector for your design, work through this decision framework.
Step 1: Determine the Application and Device Size
| Device Type | Recommended Connector |
|---|---|
| Television, monitor, desktop PC, gaming console | Type A |
| DSLR camera, camcorder, tablet | Type C (Mini) |
| Smartphone, action camera, ultra-thin laptop | Type D (Micro) |
| Automotive infotainment, navigation | Type E |
Step 2: Consider the Mechanical Environment
- High vibration (automotive, industrial): Type E with locking mechanism
- Standard consumer use: Type A, C, or D depending on size
- Portable devices (frequent plugging/unplugging): Choose connectors rated for 10,000+ mating cycles
Step 3: Select the PCB Mounting Orientation
- Edge-mounted design: Right-angle
- Thin device, limited height: Mid-mount SMT
- Maximum mechanical strength: Through-hole (DIP)
- High-volume automated assembly: SMT
Step 4: Verify Electrical Requirements
- HDMI version required: 1.4, 2.0, or 2.1
- Bandwidth: Up to 48 Gbps for HDMI 2.1
- Current rating: Typically 0.5 A per contact
- Voltage rating: 40 V DC typical
Step 5: Check Environmental Requirements
- Operating temperature: Standard consumer (-25°C to +85°C) or automotive (-40°C to +100°C)
- Durability: Mating cycle requirements (5,000 to 10,000 cycles typical)
- Flammability: UL94 V-0 rating
Future Trends in HDMI Connectors
Growing HDMI Connector Market
The global HDMI connectors market is expected to grow from $3.94 billion in 2025 to $6.6 billion in 2032, at a CAGR of 7.6%. Other forecasts project growth to $5.39 billion by 2031 at a CAGR of 7.95%.
Type E Automotive Growth
Type E automotive connectors are the fastest-growing segment, forecast to expand at 8.32% CAGR through 2031. The shift toward multi-screen cockpits and advanced infotainment systems in vehicles is driving this growth.
HDMI 2.1 Adoption
HDMI 2.1 is advancing at a 10.06% CAGR on the back of 8K TV adoption. Ultra High-Speed HDMI cables supporting 48 Gbps are moving into mainstream retail channels.
8K and Higher Resolutions
HDMI 2.1 supports video resolutions up to 10K, and the ecosystem is moving toward 8K and 16K display technologies. HDMI 2.2 with 96 Gbps bandwidth is already on the roadmap.
Automotive Infotainment Expansion
Automakers are integrating advanced infotainment and ADAS connectivity, with automotive applications expected to post the fastest growth at 9.74% CAGR through 2031.
FAQ
What are the different HDMI connector types?
There are four main HDMI connector types in active use: Type A (Standard), Type C (Mini), Type D (Micro), and Type E (Automotive). Type B was defined in the specification but never used in commercial products.
Which HDMI connector is most common?
Type A (Standard HDMI) is the most common, accounting for 75.92% of the HDMI connector market in 2025. It is found on TVs, monitors, gaming consoles, and most consumer electronics.
What is Mini HDMI used for?
Mini HDMI (Type C) is used for portable devices where a standard HDMI port is too large—DSLR cameras, camcorders, tablets, and thin laptops.
What is Micro HDMI used for?
Micro HDMI (Type D) is the smallest HDMI connector, used for smartphones, action cameras, and ultra-thin devices.
What is HDMI Type E?
HDMI Type E is the automotive-grade HDMI connector, designed for vehicle infotainment and navigation systems. It features vibration and shock resistance, a fully shielded design, a locking mechanism, and USCAR-2 compliance.
Are HDMI connector types compatible with each other?
No, the different connector types are physically different sizes and are not directly compatible. However, you can use adapter cables to connect different types (e.g., Type C to Type A).
Is HDMI 2.1 a connector type?
No. HDMI 2.1 is a version specification that defines bandwidth and features (up to 48 Gbps, 10K resolution). It uses the same physical connector types (A, C, D, E) as earlier versions.
How do I choose the right HDMI connector?
Start with the device size and application—Type A for full-sized devices, Type C for portable devices, Type D for mobile devices, and Type E for automotive. Then consider PCB mounting orientation (right-angle, vertical, SMT, through-hole) and environmental requirements (temperature, vibration, mating cycles).
Final Thoughts
The HDMI connector family is more diverse than most engineers realize. What appears to be a simple port is actually a family of four distinct physical interfaces—each with the same 19-pin electrical capability but completely different mechanical footprints. Specifying the wrong type can derail a design, delay production, and create compatibility issues.
Understanding the differences between Type A, C, D, and E is not just technical trivia—it is essential for making the right design decision. Type A dominates consumer electronics with 76% market share. Type C and D enable portable and mobile devices. Type E is the fastest-growing segment, driven by automotive infotainment demand.
At Vistar Electronics, we understand the nuances of HDMI connectors. Our HDMI connector portfolio includes Type A, C, D, and E configurations with right-angle, vertical, SMT, and through-hole mounting options. We work with design teams to match the right connector to the application—not just the specification, but the real-world mechanical and environmental demands.
Whether you are designing a consumer television, an automotive infotainment system, a portable camera, or a medical display, the connector choice matters. Choose one that fits—physically and electrically.
For technical specifications, samples, or application support, contact the Vistar Electronics engineering team.
