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Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
This custom round 1-pin magnetic pogo pin connector is designed for compact device-side power interfaces that require a detachable magnetic connection. It combines a spring-loaded center contact with a circular magnetic mating structure, while the complete electrical return path, working stroke, magnetic force, PCB or wire termination and enclosure integration can be configured according to the application.
Product specifications should be reviewed together with the customer device, PCB, electrical assignment and mechanical mating conditions.
Define the function of each power, return, signal, control or detection contact.
Provide voltage, continuous current, peak current and required signal conditions.
Provide available length, width, height, PCB area and required mating orientation.
Provide application, expected quantity, environment and customer validation requirements.
Review the product-specific description, technical parameters, contact arrangement, mechanical structure and project conditions below.
Engineering Summary: This round 1-pin magnetic pogo pin connector is intended for compact device-side interfaces that require a spring-loaded electrical contact and magnet-assisted mating. Because one visible pogo contact does not by itself define a complete power circuit, the return path, polarity, working stroke, magnetic force, PCB or wire termination and enclosure structure must be confirmed as part of the complete application.
A round 1-pin magnetic pogo pin connector should be specified as a complete electrical and mechanical interface rather than as an isolated pogo pin. The final connector performance depends on the spring-loaded contact, mating target, return path, magnets, housing geometry, mechanical stop, termination and device enclosure.
This product is suitable for custom device-side integration where a compact circular magnetic connection is preferred over a conventional plug, latch or threaded connector.
A round 1-pin magnetic pogo pin connector uses one visible spring-loaded contact inside a circular magnetic mating structure. The pogo pin compresses against its mating surface and provides local electrical contact pressure, while the magnets assist connector approach and retention.
The connector system contains several separate functions:
| System Function | Primary Structure | Engineering Purpose |
|---|---|---|
| Electrical contact pressure | Spring-loaded pogo pin | Maintains contact with the mating target across the approved working stroke |
| Electrical return path | Project-defined conductive structure | Completes the power or signal circuit outside the visible pogo contact |
| Magnetic capture and retention | Magnets and magnetic return structure | Assists connector approach and maintains the connected condition |
| Final alignment | Housing geometry and locating features | Controls the final contact position and mating orientation |
| Working stroke | Mechanical stop and dimensional stack | Defines how far the pogo pin is compressed after mating |
| Device connection | PCB, wire, solder cup or custom termination | Connects the magnetic interface to the product electronics |
A 1-pin connector describes the number of visible pogo contacts. It does not remove the need for the second side of the electrical circuit.
The return path may be provided through:
The return structure must be intentionally conductive and validated. A magnet, housing, screw or exposed metal component should not be assumed to carry current unless it is specifically designed for that function.
Before approving the connector, define:
| Specification | Current Product Definition |
|---|---|
| Product Type | Round magnetic pogo pin connector |
| Pin Count | 1 spring-loaded contact |
| Connector Geometry | Round / circular |
| Primary Function | Project-specific low-voltage power or electrical interface |
| Return Path | Must be defined in the approved electrical architecture |
| Mating Method | Magnet-assisted |
| Contact Method | Spring-loaded pogo contact against a defined mating target |
| Termination | Custom PCB, wire, solder cup or module integration |
| Voltage and Current | Confirmed according to the approved project drawing and complete power path |
| Magnetic Force | Configured according to holding and release requirements |
| Ingress Protection | Determined by the final connector and device sealing structure |
A round connector structure may be useful when the device has a cylindrical enclosure, central charging position or limited installation area.
The final design should confirm:
The pogo pin compensates for a defined amount of axial dimensional variation. Stable operation requires the contact to remain within its approved working-stroke range under minimum, nominal and maximum assembly conditions.
The tolerance stack may include:
The magnetic structure can assist connector approach and create a detachable interface. Magnetic capture, axial retention, lateral movement and cable-peel release should be treated as separate requirements.
A stronger magnet is not automatically better. Excessive magnetic force may increase mating impact, removal force, enclosure loading or pogo pin compression.
The connector can be developed around the available PCB, wire and enclosure structure instead of forcing the device to adopt a standard external connector shape.
| Integration Option | Suitable Condition | Primary Engineering Review |
|---|---|---|
| PCB-mounted structure | The connector is installed directly onto the device PCB | Footprint, soldering, working height and PCB support |
| Wire-terminated structure | The connector connects to an internal harness | Wire gauge, joint process, strain relief and polarity |
| Solder-cup structure | Manual or controlled wire soldering is required | Solder amount, thermal exposure and protection of the moving contact |
| Integrated module | The connector is supplied with a housing, PCB, cable or sealing structure | Complete mechanical, electrical and environmental validation |
The complete electrical path may include:
Define the following before product approval:
The connector rating should be based on the complete installed system. A current value measured on an individual contact does not automatically establish the current capability of the complete device interface.
The mechanical review should include:
Magnets should assist mating, while the housing and mechanical stop should define the final connector position.
| Requirement | Recommended Evaluation |
|---|---|
| Complete circuit | Confirm the pogo contact and defined return path |
| Contact resistance | Measure at the defined working stroke and measurement points |
| Power performance | Voltage-drop and temperature-rise testing under the required load |
| Working stroke | Minimum, nominal and maximum assembly conditions |
| Magnetic behavior | Capture, holding and separation force in defined directions |
| Repeated mating | Project-defined cycle testing with pre- and post-test measurements |
| Incorrect mating | Offset, rotated and partially connected positions |
| Environment | Application-specific temperature, humidity, contamination or chemical exposure |
| Final installation | Device-level validation with the production PCB, housing and mating target |
One visible pogo contact can only be used after another intentional conductive return path has been defined in the complete device or mating system.
No. The outer ring, housing or magnet should only be treated as a conductor when it has been intentionally designed, connected and validated for that function.
Yes. Magnetic behavior can be adjusted through magnet size, arrangement, material, air gap and magnetic return structure. Holding and release forces should be defined separately.
PCB mounting can be evaluated when the connector structure, footprint, soldering process, installed height and mechanical support are confirmed.
Ingress protection depends on the complete connector insert, device enclosure, seals, cable entry, adhesive and tested mating state. The component should not be assigned a universal IP rating without a defined test configuration.
A one-contact structure is normally considered only after the complete electrical path has been defined. Independent power, return and data channels generally require additional conductive paths.
The working stroke must be selected from the pogo pin construction and the complete assembly tolerance stack. It should remain inside the approved range under minimum, nominal and maximum conditions.
The project may be reviewed as an individual connector component, a wire-terminated assembly or an integrated module containing a PCB, cable, housing or sealing structure.
Review more round magnetic connector structures , compare 1 Pin, 2 Pin and 3 Pin connector architectures , access the connector engineering guides , or submit your drawings through the Get Quote & Samples page .
CTP can review the complete circuit path, return structure, connector dimensions, pogo pin working stroke, magnetic arrangement, PCB or wire termination and enclosure integration before prototype development. Final electrical ratings, environmental limits and validation criteria should be confirmed in the approved project drawing.
This product page presents a CTP magnetic connector 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.
ENGINEERING CONFIRMATION BEFORE SAMPLING
Confirm power, signal and grounding allocation for the intended device.
Confirm working stroke, alignment, mounting, retention and mating behavior.
Confirm cable exit, host interface and project-specific assembly requirements.
Use the approved drawing and agreed validation plan as the release reference.
Submit your Pin Map, electrical requirements, available space, mating structure and project quantity for connector selection or custom development review.
Use the following engineering guides to compare contact count, contact allocation and connector layout before confirming the final product or customized design.
Review the complete selection path from contact count and electrical functions to connector shape.
View Main Guide →Compare one-contact special structures, complete two-contact circuits and third-contact functions.
Compare Low-Pin Designs →Determine whether four contacts are sufficient or whether a defined fifth electrical path is required.
Compare 4 Pin and 5 Pin →Calculate the contact budget and compare six-contact, multi-row and customized contact-array structures.
Compare High-Pin Designs →
