Magnetic Mating Interface
Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.
A custom 4 pin magnetic charging cable with four contacts arranged in a single linear row inside a compact rectangular cable-side head. The assembly mates with a separate device-side component, while the Pin Map, voltage, current, cable construction, contact travel, magnetic retention and mounting geometry are defined according to the approved project requirements.
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 RECTANGULAR MAGNETIC CHARGING CABLE
This 4 pin magnetic charging cable uses a compact rectangular cable-side head with four electrical contacts arranged in a single linear row. A separate device-side mating component completes the detachable magnetic charging interface.
Charging is the confirmed primary function. The final Pin Map, operating voltage, continuous current, cable construction, device-side mounting and environmental requirements should be defined according to the approved project drawing.
Magnets primarily assist capture and retention during mating. Final position, alignment and electrical seating should be established by the connector housing, mating surfaces and mechanical datums rather than magnetic attraction alone.
The reference charging head contains four contact positions arranged along one centerline inside a rectangular housing.
This configuration provides four project-defined electrical positions while keeping the mating interface narrow and mechanically organized.
Pin Count 4 Pin
Contact Layout Single row / linear
Head Geometry Compact rectangular
Primary Function Charging
Four contacts do not have one universal electrical assignment. The function of each position should follow the approved electrical schematic and Pin Map.
Pin 1–4 Functions → Defined by Approved Pin Map
Power / Return Allocation → To Be Confirmed
Detection / Identification → Project-Specific
Signal / Data Functions → To Be Confirmed
Cable-side and device-side drawings should use the same viewing direction and Pin 1 reference to prevent mirrored contact assignments during integration.
Current capability cannot be determined from the number of contacts or the visible contact dimensions alone.
Source → Opposite-End Termination → Cable Conductors → Cable-Side Head → Magnetic Contact Interface → Device-Side Contacts → PCB / Charging Circuit → Load → Return Path
Cable conductor resistance, termination resistance, mating-interface resistance and device-side PCB resistance all contribute to the complete electrical path.
Vdrop = I × Rpath
Ploss = I² × Rpath
Continuous current should therefore be defined together with the approved cable length, wire gauge, voltage-drop limit, temperature-rise requirement and mating condition.
If the approved Pin Map uses multiple contacts in parallel for charging power or return, equal current sharing should not be assumed automatically.
Individual path resistance can vary because of cable routing, contact resistance, termination resistance, mating compression and device-side PCB geometry.
Parallel-contact current distribution should therefore be validated for the complete charging interface under the required operating condition.
The visible interface uses symmetrically positioned magnetic retention elements around the four-contact area.
Magnets assist initial capture and retention, while the housing and mating geometry should define final position and seating.
Capture force, retention force, axial separation force and peel force represent different mechanical conditions and should be specified separately where required.
Higher magnetic force is not automatically better. The required retention should be selected according to cable direction, device mass, housing strength and intended disconnect behavior.
Four electrical contact positions are visible, but the internal spring-loaded structure cannot be fully confirmed from the product image alone.
If pogo contacts are used, working stroke, total travel, spring force and installed compression should be defined separately by the approved contact drawing.
Working stroke represents the intended operating compression. Total travel represents the available mechanical movement and should not be treated as the same parameter.
The connector housing should establish the final mechanical stop. Spring-loaded contacts should provide electrical connection and controlled Z-axis compliance rather than act as the primary structural stop.
The reference image shows a separate device-side mating component corresponding to the rectangular cable head.
Its final PCB, FPC, wire, housing or panel integration method should be confirmed by the approved device-side drawing.
Available X/Y/Z space, mating direction, mounting tolerance, mechanical stop and surrounding enclosure geometry should be reviewed before the interface is released for production.
The magnetic connector head is one part of the complete charging cable assembly.
Cable length, conductor count, wire gauge, conductor material, cable outer diameter, jacket material, shielding where required, flexibility and strain relief should be defined according to the electrical and mechanical requirements.
USB, USB-C, DC plug, terminal, bare wire or another opposite-end termination should only be stated after the actual cable configuration has been confirmed.
Four contacts do not automatically establish data capability.
If signal transmission is required, the complete electrical channel should be evaluated through the Pin Map, return path, contact geometry, contact pitch, PCB transition and cable construction.
Data rate or protocol compatibility should only be specified after the target electrical channel has been confirmed and validated.
Cycle life, contact resistance, salt-spray performance, operating temperature, plating and environmental protection should only be released after the corresponding project requirements and validation conditions are confirmed.
The visible connector geometry does not by itself establish corrosion resistance or an IP rating.
Any IP rating should apply to a clearly defined and tested complete assembly or device enclosure.
| Specification | Details |
|---|---|
| Product Type | 4 Pin Magnetic Charging Cable Assembly |
| Pin Count | 4 Pin |
| Primary Function | Charging |
| Head Shape | Rectangular / Bar-Style |
| Contact Arrangement | Single Row / Linear |
| Pin Map | Defined by Approved Drawing |
| Data Function | To Be Confirmed |
| Parallel Contacts | To Be Confirmed |
| Current Sharing | Requires Complete Path Validation |
| Contact Type | To Be Confirmed |
| Working Stroke | To Be Confirmed |
| Total Travel | To Be Confirmed |
| Cable Length | Project-Specific |
| Wire Gauge | To Be Confirmed |
| Opposite-End Termination | To Be Confirmed |
| Device-Side Mounting | To Be Confirmed |
| Voltage | Project-Specific |
| Continuous Current | To Be Confirmed |
| Peak Current | To Be Confirmed |
| Magnetic Function | Capture + Retention |
| Final Position / Alignment | Controlled by Mechanical Mating Geometry |
| Magnetic Retention | Project-Specific |
| Material / Plating | To Be Confirmed |
| Cycle Life | To Be Confirmed |
| IP Rating | To Be Confirmed at Complete Assembly Level |
If your project requires a connector-only magnetic interface rather than a finished cable assembly, review CTP’s Magnetic Connector solutions .
This rectangular four-contact architecture can be evaluated for equipment requiring a compact detachable charging connection.
Final suitability depends on the required Pin Map, electrical load, installation envelope, cable routing, mating geometry and environmental conditions.
It is a detachable charging cable assembly using four electrical contacts arranged in a single linear row inside a rectangular magnetic cable head.
Contact functions are project-specific and should follow the approved Pin Map. Power, return, detection, identification, signal or unused positions should be defined by the electrical design.
No. Pin count does not determine data capability or bandwidth. Signal functions require validation of the Pin Map, return path, contact geometry, PCB transition and complete cable channel.
Current capability must be confirmed for the complete conductive path, including cable conductors, terminations, magnetic contacts, device-side interface, PCB routing and allowable temperature rise.
Parallel power or return contacts can be evaluated when required, but current sharing must be reviewed rather than assuming each contact carries an equal load.
The image shows four contact positions, but the internal spring-loaded mechanism, working stroke and total travel should be confirmed by the approved contact drawing.
Capture force, retention force, axial separation force and peel force should be distinguished. Final magnetic requirements depend on the mating direction, cable routing and device structure.
Yes. Cable length, wire construction and opposite-end termination can be defined for the project, subject to electrical, voltage-drop and mechanical requirements.
Provide the 4-pin Pin Map, voltage, continuous and peak current, cable length, wire gauge, opposite-end termination, installation space, mating geometry, magnetic requirements and available drawings.
CUSTOM MAGNETIC CHARGING CABLE DEVELOPMENT
Send CTP your 4-pin Pin Map, voltage, continuous and peak current, cable length, wire gauge, opposite-end termination, available X/Y/Z installation space, contact dimensions, device-side mounting structure, magnetic requirements and available 2D or 3D drawings. 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.
