MCIL12F 12-Pin Female Inline Underwater Connector – SubConn-Compatible Micro Circular Connector
Reliable 12-Pin Female Underwater Connector for Subsea Power and Signal Applications
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MCIL12F 12-Pin Female Inline Underwater Connector from
HYSF SUBSEA is a compact, high-density electrical connector designed for reliable multi-channel power, control, and signal transmission in demanding marine and subsea environments.Featuring 12 female electrical contacts within a miniature circular interface, the MCIL12F provides a practical connection solution for remotely operated vehicles (ROVs), autonomous underwater vehicles (AUVs), underwater sensors, sonar systems, oceanographic instruments, marine cameras, subsea control equipment, and offshore monitoring applications.As part of the HYSF SUBSEA Micro Circular connector family, the MCIL12F is designed for compatibility with corresponding
SubConn and SEACON Micro Circular underwater connector interfaces.Its female mating interface is intended for compatible 12-pin male connectors, including the
MCBH12M male bulkhead connector and
MCIL12M male inline cable connector.The 12-contact design provides additional wiring flexibility for underwater equipment that requires multiple electrical circuits within a compact connector.Individual conductors can be assigned to suitable power supply, sensor signals, digital communication, and equipment control functions according to the system’s approved electrical design.Manufactured with a molded marine-grade elastomer body and gold-plated electrical contacts, the MCIL12F is designed to support dependable underwater connectivity in environments exposed to seawater, hydrostatic pressure, and repeated equipment handling.For engineers searching for a
SubConn-compatible MCIL12F connector,
12-pin female underwater cable connector, or
miniature subsea electrical connector for ROV and AUV systems, HYSF SUBSEA provides a compatible alternative for new installations, replacement cables, and customized underwater cable assemblies.
Key Features of the MCIL12F Underwater Connector
1. Compact 12-Pin Female Micro Circular Design
The MCIL12F incorporates 12 female electrical contacts within a compact circular connector interface.This high-contact-count arrangement allows multiple circuits to be accommodated within a single underwater connection.Compared with lower-pin-count connectors, the MCIL12F provides additional flexibility for applications involving several sensors, control signals, or low-power electrical functions.Typical applications include:
- ROV electrical control systems.
- AUV navigation and monitoring modules.
- Multi-channel underwater sensor assemblies.
- Marine data acquisition equipment.
- Underwater camera control cables.
- Sonar and acoustic instrumentation.
- Subsea monitoring systems.
Its compact design is particularly useful where installation space is limited and using several individual connectors would increase the complexity of the equipment.
2. SubConn-Compatible Female Mating Interface
The MCIL12F is designed for compatibility with corresponding
SubConn Micro Circular 12-pin male connector interfaces.Compatible HYSF SUBSEA mating models include:
- MCBH12M: 12-pin male Micro Circular bulkhead connector.
- MCIL12M: 12-pin male Micro Circular inline connector.
This compatibility allows the MCIL12F to be considered for existing underwater equipment that uses the corresponding Micro Circular connector arrangement.It is useful for cable replacement, system maintenance, equipment expansion, and new subsea cable assembly designs.When integrating connectors from different manufacturers, the specific mating geometry, contact arrangement, connector generation, and locking system should be verified.HYSF SUBSEA manufactures compatible connectors. The MCIL12F is not an original SubConn-branded product.
3. Molded Waterproof Construction
The MCIL12F features a molded watertight body designed to protect the electrical interface and cable termination area.Its marine-grade elastomer construction helps provide environmental protection when correctly mated to a compatible male connector.The molded cable entry also supports strain relief between the connector body and attached cable.This is important for underwater equipment that may experience mechanical handling, cable movement, and repeated deployment cycles.Reliable underwater sealing depends on:
- Correct connector compatibility.
- Proper mating alignment.
- Complete engagement.
- Suitable locking or retention.
- Clean and undamaged sealing surfaces.
- Appropriate cable termination.
The connector should be installed and maintained according to the requirements of the complete subsea system.
4. Deepwater Capability up to 6,000 Meters
The HYSF SUBSEA Micro Circular connector series is designed for underwater applications with a stated maximum depth capability of up to
6,000 meters, equivalent to approximately
60 MPa of hydrostatic pressure.This makes the series suitable for demanding subsea applications, including underwater research, marine robotics, and offshore instrumentation.The final pressure capability of an MCIL12F cable assembly depends on the complete configuration.Important factors include:
- Mating connector selection.
- Cable pressure suitability.
- Connector termination quality.
- Locking and retention arrangement.
- Installation procedures.
- Applicable assembly testing and qualification.
For pressure-critical installations, the complete mated cable assembly should be qualified for the intended operating depth.The stated series capability should not be interpreted as an independent pressure rating for an unmated connector interface.
5. Gold-Plated Female Electrical Contacts
The MCIL12F uses gold-plated electrical contacts designed to provide a conductive interface within the sealed connector system.Gold plating helps maintain stable surface conductivity and resist contact-surface corrosion.This is especially valuable for underwater instrumentation where reliable electrical continuity is required.The HYSF SUBSEA Micro Circular 12-pin series specifies a rated current of
5 A per contact.Actual allowable electrical loading depends on the cable conductor size, simultaneous contact loading, operating temperature, and the approved assembly specification.
6. Standard and Customized Cable Lengths
The standard MCIL12F inline connector is typically supplied with a
1-meter cable.Custom cable lengths can be manufactured according to project requirements.Common configurations include:
- MCIL12F with 1-meter cable.
- MCIL12F with 2-meter cable.
- MCIL12F with 3-meter cable.
- MCIL12F with 5-meter cable.
- MCIL12F with 10-meter cable.
- Custom-length underwater cable assemblies.
The cable specification should be selected according to installation distance, mechanical routing, conductor requirements, and signal performance.Custom conductor arrangements and cable outer diameters should be reviewed for compatibility with the connector termination and molding process.
MCIL12F Technical Specifications
| Paramètres | Specification |
|---|
| Manufacturer | HYSF SUBSEA |
| Model | MCIL12F |
| Product Category | Underwater Electrical Connector |
| Connector Series | Micro Circular |
| Type de connecteur | Female Inline Cable Connector |
| Nombre de contacts | 12 |
| Contact Gender | Female |
| Compatible Male Bulkhead | MCBH12M |
| Compatible Male Inline Connector | MCIL12M |
| Compatibility | Corresponding SubConn and SEACON Micro Circular Interfaces |
| Contact Material | Gold-Plated Conductive Metal |
| Connector Body | Molded Marine-Grade Elastomer |
| Standard Cable Length | 1 Meter |
| Custom Cable Length | Available |
| Series Rated Current | 5 A per Contact |
| Series Voltage Rating | Up to 550 V AC/DC, subject to approved configuration |
| Series Depth Capability | Up to 6,000 m / 60 MPa |
| Connector Family | Wet-Mateable Micro Circular |
| Main Function | Subsea Power, Control, and Signal Connection |
| Applications typiques | ROVs, AUVs, Sonar, Marine Sensors, Oceanographic Equipment |
Technical Note: Final electrical ratings, connector dimensions, locking accessories, and depth suitability should be confirmed against the approved product drawing and complete cable assembly specification.
MCIL12F Connector Compatibility Guide
Selecting the correct mating connector is essential for reliable underwater equipment integration.The MCIL12F is a
12-pin female inline connector, meaning it is intended to mate with a corresponding 12-pin male Micro Circular interface.
MCIL12F + MCBH12M
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MCBH12M is a 12-pin male underwater bulkhead connector designed for installation through an equipment housing or panel.When paired with the MCIL12F, the two components provide a detachable cable-to-equipment electrical connection.Typical applications include:
- ROV pressure housings.
- AUV electronics enclosures.
- Underwater sensor modules.
- Marine monitoring equipment.
- Subsea junction boxes.
In this configuration, the MCBH12M provides the equipment-side mating interface, while the MCIL12F provides the cable-mounted female connection.
MCIL12F + MCIL12M
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MCIL12M is a 12-pin male inline underwater cable connector.When connected to the MCIL12F, the two connectors form a detachable cable-to-cable electrical interface.This arrangement is suitable for:
- Underwater extension cables.
- Modular subsea cable systems.
- Detachable sensor cables.
- ROV equipment connections.
- Marine instrument maintenance.
Related Connector Models
| Model | Configuration | Function |
|---|
| MCIL12F | 12-Pin Female Inline | Female Underwater Cable Connector |
| MCIL12M | 12-Pin Male Inline | Male Underwater Cable Connector |
| MCBH12F | 12-Pin Female Bulkhead | Female Panel-Mount Connector |
| MCBH12M | 12-Pin Male Bulkhead | Male Panel-Mount Connector |
| MCDC12M | 12-Pin Male Dummy Plug | Protects Compatible Female Interfaces |
| MCDC12F | 12-Pin Female Dummy Plug | Protects Compatible Male Interfaces |
When the MCIL12F is disconnected, a compatible
MCDC12M male dummy plug can be used to protect its female mating interface.
MCIL12F vs. IL12F
The MCIL12F belongs to the
Micro Circular connector series.The IL12F belongs to the
Standard Circular connector series.Although both models have 12 electrical contacts, they use different connector interfaces and should not be assumed mechanically interchangeable.The connector family must be confirmed before selecting replacement cable assemblies.
Typical Applications of the MCIL12F 12-Pin Underwater Connector
ROV Electrical Systems
Remotely operated vehicles frequently use detachable underwater connectors for sensors, control systems, cameras, and auxiliary equipment.The MCIL12F provides a compact 12-contact interface for suitable electrical circuits within its rated capacity.It can be connected to a compatible MCBH12M male bulkhead mounted on an ROV housing.This configuration supports cable removal and replacement during maintenance without requiring permanent wiring between the external cable and equipment enclosure.
AUV Navigation and Sensor Systems
Autonomous underwater vehicles often incorporate navigation instruments, environmental sensors, and monitoring modules.The MCIL12F can be used as part of a detachable underwater cable assembly connecting compatible AUV components.Its 12 electrical contacts allow engineers to define application-specific conductor assignments for suitable signals and low-power circuits.
Underwater Sonar and Acoustic Equipment
Sonar systems and hydrophone arrays may require multiple electrical connections for sensor outputs, power supply, and control functions.The MCIL12F can provide a compact electrical interface for compatible underwater acoustic instrumentation.For low-level acoustic signals, the cable construction, shielding, conductor arrangement, and noise performance should be considered during design.
Oceanographic Research Instruments
Marine scientific instruments frequently require dependable electrical connections during repeated underwater deployment.Potential applications include:
- CTD measurement instruments.
- Marine pressure sensors.
- Water-quality monitoring equipment.
- Underwater acoustic sensors.
- Seabed observation systems.
- Oceanographic data acquisition modules.
The MCIL12F can connect compatible instruments to external subsea electrical cables and monitoring equipment.
Underwater Camera Systems
Underwater imaging systems may require several electrical circuits for power, camera control, lighting commands, and auxiliary functions.A 12-pin connector provides flexibility for suitable multi-conductor cable designs.However, the ability to transmit video or network data depends on the complete cable and connector assembly.
Subsea Junction Boxes
Underwater junction boxes distribute electrical circuits between subsea equipment.The MCIL12F can mate with a compatible MCBH12M male bulkhead installed on a junction box.This arrangement provides a detachable interface that supports installation, equipment replacement, and maintenance.
Offshore Monitoring Equipment
Offshore monitoring systems may operate in seawater, salt spray, and other challenging marine conditions.The MCIL12F is suitable for selected monitoring and instrumentation applications requiring compact waterproof electrical connectivity.
Custom MCIL12F Underwater Cable Assemblies
HYSF SUBSEA supports customized underwater connector assemblies for projects requiring specific cable lengths, wiring configurations, or mating arrangements.
Custom Cable Length
The standard 1-meter cable can be adapted to suit different equipment installation requirements.Cable length should be selected according to routing distance, equipment movement, and maintenance accessibility.
Custom Pin Assignments
The 12 electrical contacts can be assigned according to an approved wiring diagram.Possible functions include:
- DC power supply.
- Ground return.
- Analog sensor outputs.
- RS-232 communication.
- RS-485 communication.
- Digital control circuits.
- Auxiliary monitoring signals.
All circuit assignments must remain within the specified electrical ratings and cable performance limits.
Custom Cable Construction
Depending on the project, cable options may involve specific conductor sizes, shielding arrangements, insulation materials, or outer jacket properties.The cable must remain compatible with the connector termination and molding process.
Connector-to-Connector Cable Assemblies
One common configuration is:
MCIL12F – Custom Cable Length – MCIL12MThis provides a detachable underwater extension cable with compatible female and male Micro Circular connectors.Other arrangements can be developed according to an approved project drawing.
Can the MCIL12F Support Ethernet Communication?
The MCIL12F features 12 electrical contacts and may be integrated into systems carrying various electrical signals.However,
the standard MCIL12F should not automatically be considered a qualified Gigabit Ethernet connector.Ethernet performance depends on the complete cable assembly.Relevant factors include:
- Twisted-pair conductor arrangement.
- Characteristic impedance.
- Cable shielding.
- Signal pair assignments.
- Connector termination.
- Cable length.
- Insertion loss.
- Signal integrity testing.
For applications requiring 100BASE-TX or 1000BASE-T communication, the cable assembly must be designed and verified against the required transmission standard.HYSF SUBSEA also offers dedicated underwater Ethernet connector solutions for applications requiring specified network performance.
Installation and Maintenance Recommendations
Proper installation and routine inspection are important for maintaining underwater connector reliability.
1. Verify Compatibility
Confirm that the MCIL12F is being connected to a compatible 12-pin male Micro Circular connector.
2. Inspect the Female Interface
Check the contact sockets and mating surfaces for contamination, damage, or abnormal wear.
3. Clean Before Mating
Follow the approved connector cleaning procedure and avoid abrasive materials or unapproved chemicals.
4. Align Correctly
Align the connector according to its mating interface before engagement.Do not force incompatible connectors together.
5. Secure the Connection
Use the appropriate compatible locking sleeve or retaining accessory where required.
6. Protect the Cable
Provide suitable strain relief and avoid excessive cable tension or bending.
7. Protect Unused Interfaces
When the MCIL12F is disconnected, use a compatible
MCDC12M male dummy plug to protect the female mating interface.
8. Inspect After Deployment
Following equipment recovery, check the connector body, cable termination, and mating surfaces for damage and contamination.
Frequently Asked Questions
Q1: What is the MCIL12F underwater connector?
The MCIL12F is a 12-pin female inline underwater electrical connector manufactured by HYSF SUBSEA. It belongs to the Micro Circular connector family and is designed for suitable subsea power and signal applications.
Q2: Is the MCIL12F compatible with SubConn?
Yes. The HYSF SUBSEA MCIL12F is designed for compatibility with corresponding SubConn-style Micro Circular 12-pin male interfaces.
Q3: Which connectors mate with MCIL12F?
The MCIL12F is intended to mate with compatible male connectors, including MCBH12M male bulkhead connectors and MCIL12M male inline connectors.
Q4: Is MCIL12F male or female?
The MCIL12F is a
female inline underwater connector with 12 female electrical contacts.
Q5: What is the standard cable length?
The standard MCIL12F cable length is typically 1 meter. Customized lengths are available for different project requirements.
Q6: What is the rated current of the MCIL12F?
The HYSF SUBSEA Micro Circular 12-pin series specifies a rated current of 5 A per contact. Final allowable loading depends on the complete cable assembly design.
Q7: Can MCIL12F operate at 6,000 meters underwater?
The Micro Circular connector family has a stated depth capability of up to 6,000 meters. The complete mated connector assembly must be suitable and qualified for the intended operating depth.
Q8: Can MCIL12F transmit power and signals?
Yes. The 12 contacts can be assigned to suitable power and signal circuits, provided the electrical ratings and cable specifications are respected.
Q9: Is MCIL12F interchangeable with IL12F?
No. MCIL12F is a Micro Circular connector, while IL12F is a Standard Circular connector. They should not be assumed mechanically interchangeable.
Q10: Does MCIL12F support Gigabit Ethernet?
Gigabit Ethernet performance depends on the complete cable and connector assembly. The standard MCIL12F should not be assumed to meet 1000BASE-T requirements without appropriate design and testing.
Q11: Which dummy plug protects MCIL12F?
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MCDC12M male dummy plug is intended to protect compatible 12-pin female Micro Circular connector interfaces.
Q12: Can the MCIL12F cable length and pinout be customized?
Yes. Cable length and wiring configuration can be customized according to an approved technical specification and manufacturing feasibility.
HYSF SUBSEA MCIL12F – Compact 12-Pin Female Connectivity for Subsea Equipment
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HYSF SUBSEA MCIL12F 12-Pin Female Inline Underwater Connector combines a compact Micro Circular design with flexible multi-channel electrical connectivity.Its 12-contact configuration, molded watertight construction, gold-plated electrical contacts, and compatibility with corresponding
SubConn-style MCBH12M and MCIL12M male connectors make it suitable for a wide range of subsea applications.From
ROV cable assemblies and AUV navigation modules to underwater sonar systems, marine sensors, oceanographic instruments, and subsea junction boxes, the MCIL12F provides a practical solution for connecting multiple electrical circuits within a compact underwater interface.With standard and customized cable assembly options, the MCIL12F is a versatile
12-pin female underwater connector for modern marine instrumentation and subsea equipment.
