Magnetic Mating Interface
Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.
A custom 4 pin round magnetic data cable featuring two cable-terminated circular mating halves for a detachable inline electrical interface. The four contacts are assigned according to the approved Pin Map, while cable construction, data protocol, working stroke, magnetic retention and remote-end termination are project-specific. Supported data rate must be validated through the complete electrical channel.
The finished assembly must define the magnetic mating component, internal conductor arrangement, cable construction and the opposite-end connection as one complete electrical system.
Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.
Define cable length, conductor count, wire specification, shielding requirements, jacket and flexibility.
Select USB, Type-C, DC plug, bare wire, terminal, PCB connection or another customized termination.
Confirm installation space, outlet direction, strain relief, exposed-contact state and user operation.
4 PIN ROUND MAGNETIC DATA CABLE
This 4 pin round magnetic data cable uses two cable-terminated circular mating halves to create a detachable inline electrical interface. The visible architecture combines four electrical contact positions, magnetic capture and retention, molded cable housings and strain-relief structures on both mating sides.
The four contacts are assigned according to the approved Pin Map. They may support project-defined data, signal, ground, power, detection or control functions, but four contacts alone do not define a specific communication protocol or supported data rate.
Magnetic structures assist capture and retention during mating. Final position, alignment and seating should be controlled by the circular housing and mechanical mating geometry. Electrical contacts provide the required connection and compliant contact condition after the interface reaches its intended seated position.
Unlike a magnetic cable that mates directly with a PCB-mounted device connector, the product image shows cable exits on both mating halves. This creates an inline cable-to-cable interface that can be evaluated where a detachable electrical connection is required between two cable sections.
Pin Count Four electrical contact positions
Interface Shape Round / circular magnetic mating structure
Cable Architecture Cable-terminated mating halves on both sides
Electrical Function Project-defined data, signal, power or control according to Pin Map
A four-contact circular interface requires a clearly defined Pin Map. The approved drawing should identify Pin 1, viewing direction, contact allocation and the permitted mating orientation.
A round connector housing does not automatically mean that every rotational position is electrically valid. If the four contacts have different electrical functions, mechanical keying, polarity control or another orientation-control method may be required to prevent an incorrect contact mapping.
Magnetic capture should therefore be treated separately from valid electrical connection. The interface must reach the approved mechanical orientation and seating condition before the contact state can be considered valid.
This product is intended for data-interface projects, but pin count does not define communication bandwidth.
Supported protocol and data rate should be evaluated through the complete electrical channel, including:
USB, UART, RS-485 or another protocol should only be stated after the complete Pin Map and channel requirements have been confirmed.
Magnets primarily assist capture and retention. The final mechanical position should be established by the mating housings, mechanical datums, guides and seating surfaces.
Capture force, retention force, separation force and peel force describe different mechanical conditions. A stronger magnetic force is not automatically a better interface because cable handling, user release behavior and connector loading must also be considered.
The required magnetic behavior should therefore be defined around the complete cable and device application rather than from a single attraction-force value.
If spring-loaded contacts are used within the mating interface, the approved working stroke should be reached only after the two circular housings achieve their intended seated position.
Working stroke and total travel must be treated as separate parameters. The recommended operating compression should account for contact height, housing tolerances, mating depth and the complete mechanical stack-up.
Spring contacts should provide electrical contact and controlled compliance rather than act as the primary mechanical stop of the connector.
Because both mating halves are cable-terminated, the cable structure should be reviewed as part of the complete interface rather than independently from the magnetic connector heads.
Cable length, conductor count, wire gauge, shielding, jacket construction, cable OD, bending conditions and strain-relief geometry should be defined according to the electrical and mechanical requirements of the project.
The remote ends of the two cable sections can use project-specific terminations, but USB, terminal, PCB, FPC, bare-wire or other interfaces should not be assigned until the approved cable drawing defines them.
If one or more contacts are also assigned to power, supported current must be evaluated through the complete conductive path.
Source → Cable Conductors → Mating Half A → Contact Interface → Mating Half B → Cable Conductors → Target Circuit → Load
Vdrop = I × Rpath
Ploss = I² × Rpath
Wire gauge, cable length, termination resistance, connector resistance, mating condition and temperature rise should be evaluated together. Current capability cannot be determined from contact size or pin count alone.
| Specification | Details |
|---|---|
| Product Type | 4 Pin Round Magnetic Data Cable |
| Pin Count | 4 Pin |
| Interface Shape | Round / Circular |
| Cable Architecture | Inline Cable-to-Cable Magnetic Interface |
| Mating Halves | Two Cable-Ended Mating Components Visible |
| Contact Arrangement | Circular 4-Contact Interface |
| Magnetic Function | Capture + Retention |
| Final Position / Alignment | Controlled by Mechanical Mating Geometry |
| Pin Map | Defined by Approved Drawing |
| Mating Orientation | To Be Confirmed |
| Rotational Keying | To Be Confirmed |
| Data Function | Confirmed; Protocol Project-Specific |
| Data Protocol / Rate | To Be Confirmed by Complete Channel Validation |
| Cable Length | Project-Specific |
| Wire Construction | Project-Specific |
| Shielding | To Be Confirmed |
| Remote-End Termination | To Be Confirmed |
| Voltage | Project-Specific |
| Current Capability | Project-Specific; Validate Complete Conductive Path |
| Working Stroke | Defined by Approved Drawing |
| Total Travel | To Be Confirmed |
| Magnetic Retention | Project-Specific |
| Material / Plating | To Be Confirmed |
| Cycle Life | To Be Confirmed |
| IP Rating | Not Claimed Without Complete Assembly Validation |
CTP can review the complete four-pin round magnetic cable architecture around the customer’s Pin Map, cable requirements and mechanical interface.
This 4 pin round magnetic data cable can be evaluated for applications requiring a detachable inline electrical interface between two cable sections.
Application suitability depends on the Pin Map, protocol, cable construction, magnetic interface, mating orientation, electrical load and environmental requirements of the complete system.
Environmental capability should be validated for the complete cable assembly under defined test conditions.
Mating-cycle performance, cable bending life, corrosion behavior, operating temperature and contact stability depend on the exact materials, plating, cable structure and mechanical operating conditions.
A circular housing or flat mating surface does not establish an IP rating. Protection performance should only be claimed when the complete mated assembly and sealing design have been defined and tested.
It is a magnetic cable assembly using four electrical contact positions in a circular mating interface. This version uses cable-terminated mating components on both sides for a detachable inline cable connection.
Each contact is assigned according to the approved Pin Map. Functions may include data, signal return, power, ground, detection or control depending on the project.
No. Pin count alone does not define USB, UART, RS-485 or another protocol. The Pin Map, signal return path, cable construction and complete channel must be confirmed.
Data rate is project-specific and depends on the protocol, contact geometry, return path, cable length, conductor arrangement, shielding and transitions through the complete channel.
This should not be assumed. The permitted mating orientation depends on the Pin Map, contact layout, polarity control and mechanical keying defined by the approved design.
The magnets primarily assist capture and retention. Final positioning and seating should be controlled by the mechanical mating geometry.
Combined functions can be evaluated when the Pin Map and complete system architecture support them. Current capability and data-channel performance must be validated separately.
Yes. Cable length, conductor construction and remote-end termination can be defined according to the approved project requirements and drawing.
No IP rating should be assumed from the round housing alone. Environmental protection depends on the complete mating and sealing structure and must be validated at assembly level.
Provide the Pin Map, mating orientation, protocol, target data rate, cable length, wire requirements, remote-end terminations, voltage and current, magnetic requirements, mechanical dimensions and available 2D or 3D drawings.
CUSTOM ROUND MAGNETIC DATA CABLE DEVELOPMENT
Send CTP your 4-pin Pin Map, mating orientation, data requirements, cable length, wire construction, remote-end terminations, voltage, current, magnetic requirements and 2D or 3D drawings. Our engineering team can review the complete cable-to-cable interface before quotation and sample development. Request Custom Quote & Samples
This product page presents a CTP magnetic cable assembly configuration for engineering reference. Final dimensions, electrical ratings, materials, magnet structure, sealing level and reliability targets are not universal values; they are confirmed against the approved drawing, installation condition and model-specific validation plan.
CTP reviews the application and prepares a drawing or specification for approval before sample production. Test scope, acceptance criteria and report format should identify the model, sample status, method, conditions, result and review date.
Yes. Customization can cover geometry, contact layout, materials, cable construction, magnetic structure, sealing and appearance. Feasibility depends on the application and approved specification.
No. Current, voltage, resistance, temperature rise and ingress-protection claims apply only to the identified model and stated test conditions.
Timing is confirmed after the drawing, materials, tooling, sample quantity, validation scope and production requirements have been reviewed.
A reference product image is not enough to define a cable assembly. Confirm the following information before drawing, sampling or quotation review.
The exact project route depends on whether an existing product can be used, modified or requires a new cable assembly design.
Confirm product scope, Pin Map, cable length, termination, quantity and application conditions.
Match magnetic contacts to conductors, source-side wiring and device-side functions.
Confirm dimensions, outlet direction, cable construction and required sample configuration.
Review electrical, mechanical and environmental conditions before production approval.
Submit the magnetic-end structure, electrical functions, cable length, conductor requirements, opposite-end interface, installation space and available drawings for project review.
Review related cable assemblies by contact count, shape, termination and project supply scope.
