Magnetic Mating Interface
Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.
This custom 4-pin magnetic pogo pin charging cable combines a USB-A input with a cable-side magnetic spring-contact interface for device charging, power, detection or selected signal functions. The four-contact Pin Map, cable length, wire gauge, connector housing, magnetic retention, overmolding and device-side mating interface can be customized according to the approved project drawing.
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 charging cable combines a USB-A termination with a four-contact magnetic spring-loaded interface. The contacts can be allocated to power, ground, detection, identification or selected signal functions according to the approved Pin Map. Cable length, wire gauge, magnetic retention, connector housing, overmolding and the device-side mating structure can be customized for the application.
This product is a complete magnetic cable assembly rather than only a magnetic connector head. The USB-A plug, cable conductors, magnetic housing, four pogo pin contacts, strain relief and device-side mating interface should be developed as one electrical and mechanical system.
The pogo pins generate electrical contact pressure. The magnetic structure assists connector capture and retention, while the housing should control orientation, final alignment and working compression.
| Assembly Element | Engineering Function |
|---|---|
| USB-A termination | Connects the cable to an approved USB power source or host device |
| Four cable conductors | Carry the assigned power, ground, detection or signal functions |
| Magnetic pogo pin interface | Provides four spring-loaded electrical contact paths |
| Magnetic structure | Assists initial capture and connector retention |
| Connector housing | Controls orientation, alignment and final seating |
| Overmold and strain relief | Protect the conductor transition and cable exit |
The four contacts do not have one universal electrical definition. Their functions should be confirmed from the customer schematic before cable production.
| Example Architecture | Possible Contact Allocation |
|---|---|
| Charging with detection | Positive power, ground, detection and identification |
| Parallel charging paths | Two positive contacts and two return contacts |
| Power plus signals | Power, ground and two selected signal 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 product drawing and electrical design.
| Specification | Product Definition |
|---|---|
| Product Type | Magnetic pogo pin charging cable assembly |
| Pin Count | 4 Pin |
| Input Termination | USB-A |
| Magnetic End | Four-contact magnetic pogo pin interface |
| 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 |
| Contact Resistance | Measured at the defined working compression and test boundary |
| Magnetic Retention | Specified according to the device structure and release direction |
| Environmental Rating | Dependent on the complete connector and device sealing structure |
Current capability should be evaluated through the complete path from the USB power source, cable conductors and pogo pin contacts to the device-side mating pads and PCB.
The project should define:
When contacts are connected in parallel, current should not be assumed to divide equally. Pogo pin compression, contact resistance, mating-pad alignment and conductor routing should be evaluated together.
Four contacts may also carry selected signals, but Pin count alone does not establish USB data compatibility. The complete connector, PCB and cable path must be validated for the required protocol.
Magnetic performance should be divided into capture, retention and release rather than described by one isolated force value.
Stronger magnetic attraction is not automatically better. Excessive force may increase mating impact, removal force and pogo pin compression.
This 4-pin magnetic charging cable may be evaluated for:
Final suitability depends on the approved electrical load, Pin Map, device structure and environmental requirements.
The product shown on this page is a 4-pin magnetic charging cable with four electrical contacts.
Yes. Contacts may be assigned to power, ground, detection, identification or selected signals according to the approved Pin Map.
Yes. Cable length, wire gauge, USB-A, USB-C, bare-wire and selected custom terminations can be evaluated.
No. An IP67 rating should only be stated when the complete connector or installed device assembly has been tested in a defined condition.
Capture, retention and release should be defined separately according to the device structure, cable direction and intended operation.
Submit your Pin Map, cable length, electrical requirements and device-side drawing through the Get Quote & Samples page .
CTP can review the four-contact Pin Map, cable construction, magnetic structure, housing, overmolding 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.
