Magnetic Mating Interface
Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.
This custom 4-pin magnetic pogo pin power and data cable combines a USB-A plug with a linear four-contact magnetic interface for wearable devices, charging docks and compact electronic equipment. The contacts can be allocated to power, ground and validated data, detection or identification functions according to the approved Pin Map. Cable length, wire gauge, magnetic retention, connector housing, strain relief and the device-side mating interface can be customized for the project.
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.
Engineering Summary: This custom 4-pin magnetic pogo pin cable combines a USB-A termination with a linear four-contact magnetic interface for power and validated data functions. The Pin Map, cable construction, magnetic retention, housing and device-side mating interface should be confirmed together in the approved project drawing.
This product is a complete magnetic cable assembly rather than only a connector head. It includes a USB-A plug, cable conductors, four spring-loaded contacts, a magnetic mating structure, connector housing and cable strain relief.
The pogo pins generate electrical contact pressure, while the magnetic structure assists initial capture and retention. Final orientation, working compression and mechanical stopping should still be controlled by the connector housing and device structure.
| Assembly Element | Engineering Function |
|---|---|
| USB-A plug | Connects the cable to an approved power source, host or project-specific interface |
| Four cable conductors | Carry the assigned power, ground and signal functions |
| Four pogo pin contacts | Provide four spring-loaded electrical paths |
| Magnetic structure | Assists connector capture and retention |
| Connector housing | Controls orientation, alignment and final seating |
| Strain relief | Reduces cable bending and pulling loads at the connector exit |
The four contacts do not have one universal electrical definition. Their functions should be confirmed from the customer schematic and internal wiring before production.
| Example Architecture | Possible Contact Allocation |
|---|---|
| Power and data | Power, ground and two validated signal contacts |
| Charging with detection | Power, ground, detection and identification |
| Parallel power paths | Two positive contacts and two return contacts |
| Project-specific interface | Four customer-defined power, signal or control functions |
These are planning examples only. The final Pin Map must follow the approved schematic and connector drawing.
Engineering Note: A USB-A plug and four magnetic contacts do not automatically establish USB compatibility or a specific data rate. The internal wiring, contact allocation and complete connector-to-device channel must be validated.
| Specification | Product Definition |
|---|---|
| Product Type | Magnetic pogo pin power and data cable assembly |
| Pin Count | 4 Pin |
| Contact Layout | Linear four-contact layout |
| Opposite End | USB-A |
| Pin Map | Project-specific |
| Cable Length | Customized according to installation requirements |
| Wire Gauge | Selected according to current, cable length and voltage-drop requirements |
| Rated Current / Voltage | Confirmed through complete current-path and thermal validation |
| Data Function | Confirmed through complete cable and device-channel testing |
| Contact Resistance | Measured at the defined working compression and test boundary |
| Magnetic Retention | Specified according to the device structure and release direction |
| Environmental Protection | Dependent on the complete connector and device sealing structure |
Electrical performance should be evaluated through the complete path from the USB-A plug and cable conductors to the pogo pin contacts, mating targets and device PCB.
The project should define:
Where two contacts are used as a signal pair, the cable conductors, connector transition, mating targets and PCB routing should be evaluated together.
Magnetic performance should be defined through capture, retention and release requirements rather than one isolated force value.
Stronger magnetic attraction is not automatically better. Excessive force may increase mating impact, removal force and pogo pin compression.
Yes, when the Pin Map, cable wiring and complete signal channel are designed and validated for the required function.
Not automatically. Supported functions depend on the internal wiring, contact allocation, device electronics and complete-channel validation.
Yes. Cable length, conductor size, insulation, jacket and strain relief can be selected according to the project requirements.
No. Environmental protection depends on the connector housing, cable entry, device-side installation and complete tested assembly.
Capture, retention and release should be defined separately according to the device structure, cable direction and intended user operation.
Submit your Pin Map, cable requirements, data function and device-side drawing through the Get Quote & Samples page .
CTP can review the four-contact Pin Map, USB-A wiring, cable construction, magnetic structure, housing and device-side mating interface before prototype development. Final specifications should be confirmed in the approved drawing and validation plan.
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.
