01
Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 1 Pin Round Magnetic Pogo Pin Connector Pair uses a compact circular mating structure with a single central spring-loaded electrical contact and magnet-assisted attachment. The single contact can be used for detection, identification, signal or other project-specific electrical functions. If the connector is intended for power transfer, the complete return path must be defined separately in the customer circuit. Final dimensions, working stroke, contact force, voltage, current, magnetic retention, mating life and environmental performance must be confirmed using the approved connector drawing and complete device assembly.
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: The CTP 1 Pin Round Magnetic Pogo Pin Connector Pair uses a compact circular mating structure with one central spring-loaded electrical contact and magnet-assisted attachment. The single contact can be assigned to detection, identification, signal or other project-specific electrical functions. If the interface is intended to transfer power, a separate electrical return path must be defined in the complete customer circuit. Dimensions, working stroke, electrical ratings, magnetic retention, mating life and environmental performance must be confirmed using the approved drawing and complete customer assembly.
This 1 pin magnetic pogo pin connector is designed for compact devices that require a removable single-contact electrical interface with magnetic attachment.
The connector uses a round mating geometry. One side contains a central spring-loaded pogo pin contact, while the mating side provides the corresponding contact structure.
The surrounding magnetic structure may assist connector capture and seated retention. Final electrical contact should still be controlled by the housing geometry, mechanical stops and the defined pogo pin working stroke.
This product should be treated as a single-contact connector rather than a generic two-wire charging connector unless the complete electrical return path is specifically defined by the project.
“1 Pin” means that the connector has one defined spring-loaded electrical contact.
It does not automatically mean that the connector provides a complete positive and negative power path.
A single contact can be used for functions such as:
If the connector is intended to carry power, the complete electrical circuit must provide a separate return path through another defined conductor or system structure.
A complete DC power path normally requires both a source path and a return path.
For a true single-contact magnetic connector, the project must define where that return path is located.
| Possible Architecture | Single Contact Function | Return Path |
|---|---|---|
| Detection Interface | Presence or state detection | Provided through the existing device circuit |
| Signal Interface | Project-specific signal | Shared electrical reference defined elsewhere |
| Power Interface | Positive or negative power path | Requires a separate conductive return structure |
| Chassis-Referenced Interface | Project-specific electrical contact | Defined conductive chassis or housing path |
| Test Fixture | Programming, test or measurement node | Fixture ground or separate reference contact |
A magnetic ring or metal housing should not automatically be assumed to be an electrical return conductor. Its electrical function must be confirmed in the approved schematic and drawing.
| Connector Element | Visible Structure | Engineering Requirement |
|---|---|---|
| Electrical Contact | One central spring-loaded pogo pin | Define contact function, voltage and current |
| Mating Contact | Project-specific opposing contact region | Confirm material, finish and electrical function by drawing |
| Connector Shape | Round compact housing | Confirm diameter, height and mounting envelope |
| Magnetic Structure | Circular magnet-assisted mating geometry | Define capture, retention and separation requirements |
| Housing | Black round structural housing | Confirm insulation, temperature and mounting requirements |
| Termination | Project-specific internal or board-side connection | Confirm PCB, FPC, wire or other termination by drawing |
The electrical purpose of the single contact should be identified before the connector dimensions or magnetic structure are finalized.
| Contact Function | Information Required |
|---|---|
| Power | Voltage, continuous current, peak current and separate return path |
| Detection | Detection voltage, threshold and full-seating logic |
| Identification | Resistance, analog voltage or digital identification method |
| Control | Logic voltage, source impedance and fault state |
| Test Contact | Fixture reference, access state and test current |
The round magnetic geometry can support a compact user interface where rapid attachment and simple mating are important.
Magnetic attraction should assist initial capture rather than act as the only feature controlling the final electrical contact position.
| Mating Function | Recommended Control |
|---|---|
| Initial Capture | Magnet arrangement and approach geometry |
| Orientation | Housing features and magnetic polarity where required |
| Final Alignment | Housing datums and mating surfaces |
| Pogo Pin Compression | Mechanical stop and dimensional tolerance stack |
| Seated Retention | Magnetic structure and mechanical support |
| Removal | Defined pull direction and separation-force requirement |
Capture force, seated retention and separation force should be specified separately because they describe different connector behaviours.
The central spring-loaded contact must operate within a defined compression range.
A simplified working-stroke relationship is:
S = Hfree - Hseated
where:
The complete tolerance stack may include:
| Stroke Condition | Possible Result |
|---|---|
| Insufficient Compression | Intermittent contact or unstable detection |
| Approved Working Stroke | Intended spring force and electrical contact |
| Excessive Compression | Spring bottoming, target damage or housing stress |
The current capability of this connector cannot be determined from the visible pogo pin diameter, product shape or the number of contacts alone.
Electrical capability depends on:
A simplified complete electrical path is:
Rpath = Rsource + Rtermination + Rpogo + Rinterface + Rtarget + Rreturn
The voltage drop is:
Vdrop = I × Rpath
The resistive loss is:
Ploss = I² × Rpath
Current capability should be confirmed through complete-path voltage-drop and temperature-rise testing.
Fast charging is a complete charging-system function. It depends on the power source, charging controller, battery-management system, cable or dock, contact interface and thermal limits.
A pogo pin connector provides an electrical contact path. It does not independently establish a charging protocol or fast-charging capability.
The complete charging path may include:
Power Source → Charging Controller → Connector → Device Power Management → Battery
The connector should therefore be specified using electrical parameters such as current, voltage drop and temperature rise rather than a generic “fast charging” claim unless complete-system validation supports that statement.
Magnetic attraction may hold the two parts close together before the central contact reaches its approved working stroke.
| Condition | Possible Risk | Required Review |
|---|---|---|
| Magnetically Captured but Not Seated | Intermittent contact or false detection | Full-seating detection and mechanical stop |
| Off-Center Mating | Unstable pogo pin contact | Target diameter and maximum credible offset |
| Conductive Foreign Object | Unexpected electrical path | Power control and exposed-contact protection |
| Removal Under Load | Transient voltage or contact arcing | Power-disable sequence and powered-endurance testing |
The round housing or magnetic ring does not independently establish an ingress-protection rating.
The complete protection boundary may include:
Any IP, salt-spray or corrosion statement should identify the exact tested assembly, test method and acceptance criteria.
| Parameter | Product Definition |
|---|---|
| Product Type | 1 pin round magnetic pogo pin connector pair |
| Electrical Contact Count | 1 spring-loaded contact |
| Connector Shape | Round magnetic mating structure |
| Contact Function | Project-specific power, detection, identification or signal function |
| Return Path | Must be defined separately where required by the circuit |
| Overall Dimensions | Confirm using the approved product drawing |
| Working Stroke | Confirm minimum, nominal and maximum pogo pin compression |
| Contact Force | Report at a defined working stroke |
| Voltage | Model- and circuit-specific |
| Continuous Current | Confirm through complete-path voltage-drop and temperature-rise testing |
| Contact Resistance | Report with test current, stroke, target and measurement method |
| Magnetic Performance | Capture, seated retention and separation force are specified separately |
| Mating Life | Defined by working stroke, electrical load, target and acceptance criteria |
| Ingress Protection | Applies only to a defined and tested connector or complete device |
| Application | Possible Connector Role | Primary Engineering Focus |
|---|---|---|
| Wearable Electronics | Detection, identification or project-specific electrical contact | Compact size, exposed contacts and repeated mating |
| Smart-Home Devices | Presence detection or removable-module contact | Contact stability and user interaction |
| Portable Electronics | Single electrical function or service interface | Return path, magnetic retention and fault protection |
| Charging Docks | One element of a project-specific charging interface | Complete power path and charging-system validation |
| Test Fixtures | Test, programming or detection contact | Fixture reference and contact repeatability |
| Custom Electronic Modules | Project-specific single-contact connection | Electrical architecture and mechanical integration |
These applications are examples. Final suitability depends on the electrical function, return-path architecture, mechanical design and complete device validation.
| Requirement | Recommended Evaluation |
|---|---|
| Contact Function | Define the exact electrical purpose of the single contact |
| Return Path | Confirm the complete circuit return where required |
| Working Stroke | Verify minimum, nominal and maximum compression |
| Contact Resistance | Measure with defined current, target and working stroke |
| Voltage Drop | Measure the complete electrical path where used for power |
| Temperature Rise | Evaluate the contact, termination and return path |
| Magnetic Capture | Evaluate approach and alignment behaviour |
| Retention and Release | Measure force in the intended mating and removal directions |
| Partial Mating | Test captured-but-unseated and off-center states |
| Foreign Object | Evaluate conductive-object contact and fault response |
| Mechanical Endurance | Use defined stroke, target, speed and acceptance criteria |
| Powered Endurance | Evaluate connection and removal under intended electrical conditions |
| Environmental Exposure | Test representative moisture, dust and cleaning conditions |
| Input | Information to Provide |
|---|---|
| Contact Function | Power, detection, identification, control, test or signal |
| Return Path | Define the separate return conductor where required |
| Electrical Conditions | Voltage, continuous current, peak current and signal type |
| Mechanical Space | Maximum diameter, height and restricted regions |
| Mating Direction | Approach, final seating and removal direction |
| Working Stroke | Minimum, nominal and maximum pogo pin compression |
| Termination | PCB, FPC, wire or project-specific connection |
| Magnetic Requirement | Capture, seated retention and separation conditions |
| Environment | Temperature, moisture, dust, vibration and cleaning exposure |
| Project Files | 2D drawing, 3D model, schematic or device assembly |
It is a magnetic connector with one defined spring-loaded electrical contact. The magnetic structure assists mechanical mating but does not automatically create a second electrical contact.
Not by itself. A complete power circuit requires a separate return path. The return may be provided elsewhere in the system, but it must be clearly defined in the electrical design.
It should not be assumed to be an electrical conductor or return path. Any such function must be intentionally designed and confirmed in the approved drawing and schematic.
Yes. A single contact can be used for project-specific detection, identification, control, signal or test functions when the complete circuit provides the required electrical reference.
No. Current capability must be confirmed from the exact contact geometry, working stroke, mating target, termination, return path and temperature-rise validation.
No. Fast charging is a complete system function involving the power source, charging controller, battery-management system and electrical contact path.
No. An ingress-protection rating must apply to a defined and tested connector or complete customer assembly under stated conditions.
Provide the single contact function, complete return-path architecture, voltage, current, available space, working stroke, magnetic requirements and available drawings.
Review additional custom magnetic connector components for different pin counts and mechanical structures.
Submit the electrical function, return-path design, operating conditions and available drawings through the Get Quote & Samples page .
CTP can review the single-contact architecture, pogo pin working stroke, mating target, round magnetic structure and PCB, FPC or wire termination. Final electrical ratings, magnetic retention, mating life, environmental performance and complete device operation must be confirmed through approved drawings and project-specific validation.
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.
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 →
