01
Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 7 Pin Round Magnetic Pogo Pin Connector Pair combines seven electrical contacts with a circular metal housing, recessed spring-loaded pogo pin structure and magnet-assisted mating for industrial equipment integration. The seven contacts can be assigned to power, return, detection, identification, control or project-specific signal functions according to the customer Pin Map. Final dimensions, contact arrangement, working stroke, current, voltage, magnetic retention, mating life, vibration resistance and environmental performance must be confirmed using the approved connector drawing and complete customer 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 7 Pin Round Magnetic Pogo Pin Connector Pair combines seven electrical contacts with a circular metal housing, recessed spring-loaded pogo pin structure and magnet-assisted mating for industrial equipment integration. The contacts can be assigned to project-specific power, return, detection, identification, control or signal functions. Final dimensions, working stroke, electrical ratings, magnetic retention, vibration performance, mating life and environmental performance must be confirmed using the approved connector drawing and complete customer assembly.
This 7 pin round magnetic pogo pin connector is designed for industrial equipment that requires a removable multi-contact electrical interface within a compact circular envelope.
The connector pair provides seven electrical contact positions. One side uses recessed spring-loaded pogo pin contacts, while the opposing side provides corresponding flat mating targets.
The circular housing and magnetic mating structure can assist connector capture and repeatable attachment. The final electrical position, however, should be controlled by the mechanical mating geometry and the defined pogo pin working stroke.
The seven contacts can support different combinations of power, return, detection, identification, control and project-specific signal functions according to the customer Pin Map.
| Connector Element | Visible Structure | Engineering Requirement |
|---|---|---|
| Contact Count | Seven electrical contacts | Define the electrical function of every contact |
| Pogo Pin Side | Seven spring-loaded contacts inside a recessed region | Define free height, working stroke and contact force |
| Target Side | Seven corresponding flat mating contacts | Confirm target material, finish, position and flatness |
| Connector Shape | Round compact mating interface | Confirm diameter, height and customer installation envelope |
| Housing | Cylindrical metal outer structure with internal insulating insert | Define grounding, insulation and mechanical support requirements |
| Magnetic Mating | Magnet-assisted circular attachment | Define capture, seated retention and separation requirements |
| Termination | Project-specific board or device-side connection | Confirm PCB, FPC, wire or other termination by drawing |
A seven-contact connector provides more flexibility than a basic two-pin charging interface while remaining smaller than many conventional multi-pole plug and receptacle systems.
The additional contacts can allow engineers to separate power delivery, detection, identification and control functions instead of attempting to combine every function onto a minimal number of contacts.
Possible contact functions include:
Seven contacts do not represent one universal Pin Map. Their functions must be defined according to the host equipment and mating module.
| Architecture | Example Contact Allocation | Primary Engineering Review |
|---|---|---|
| Power + Detection + Control | Power, return, detection, identification and three control contacts | Power sequence, identification and fault response |
| Parallel Power + Control | Two positive, two return, detection, identification and control | Current sharing and individual contact temperature |
| Power + Low-Speed Signals | Power pair plus five project-specific signal contacts | Signal reference, interference and partial mating |
| Industrial Docking Interface | Power, return, detection, interlock, identification and two control paths | Vibration, contact sequence and removal under load |
| Service Interface | Power, reference and project-specific diagnostic contacts | Fixture alignment and access control |
These allocations are examples only. The actual seven-contact Pin Map must be developed from the customer schematic.
A seven-contact magnetic connector provides seven conductive paths, but pin count alone does not prove support for USB, CAN, RS-485, UART, Ethernet or another communication protocol.
The complete signal channel may include:
Host Controller → Host PCB → Protection Components → Pogo Pin Interface → Mating Targets → Device PCB → Device Controller
Signal capability depends on:
The communication capability must therefore be validated at complete channel level rather than inferred from the presence of seven contacts.
The spring-loaded contacts on the pogo pin side are positioned inside a recessed contact region rather than fully exposed above the outer housing.
This structure can help the mechanical design by:
The recessed geometry does not eliminate the need for correct working stroke, target alignment and contamination testing.
Industrial equipment may expose the connector to cable pull, vibration, shock, accidental side loads or repeated operator handling.
The spring contacts should primarily provide electrical contact rather than act as structural supports.
A preferred mechanical load path is:
Mating Device → Connector Housing → Mechanical Support → Equipment Enclosure
rather than:
Mating Device → Magnets → Pogo Pins → Mating Targets → PCB
The mechanical review should consider:
Magnetic attraction can help pull the two connector halves together, but magnetic force should not be the only feature defining final contact position.
| Mating Function | Recommended Control |
|---|---|
| Initial Capture | Magnet arrangement and approach geometry |
| Orientation Control | Contact insert geometry, housing features and magnetic polarity |
| Final Centering | Mating surfaces and mechanical datums |
| Pogo Pin Compression | Mechanical stops and dimensional tolerance stack |
| Seated Retention | Magnetic structure and customer mechanical support |
| Removal | Defined separation direction and release-force requirement |
Capture force, seated retention and separation force should be measured separately because they represent different connector behaviours.
Each spring-loaded contact must operate inside its approved compression range at the final seated position.
A simplified working-stroke relationship is:
S = Hfree - Hseated
where:
The tolerance stack may include:
| Stroke Condition | Possible Result |
|---|---|
| Insufficient Compression | Intermittent contact or unstable resistance |
| Approved Working Stroke | Intended electrical and spring-force condition |
| Excessive Compression | Spring bottoming, target damage or excessive structural load |
| Unequal Compression | Different resistance and current distribution between contacts |
A seven-contact connector may use one or several contacts for power. Current capability depends on the complete electrical and thermal path, not simply the number of pogo pins.
A simplified electrical path is:
Rpath = Rhost-PCB + Rtermination + Rpogo + Rinterface + Rtarget + Rdevice-PCB
The voltage drop is:
Vdrop = I × Rpath
The resistive power loss is:
Ploss = I² × Rpath
The project should define:
When multiple contacts are connected in parallel for power or return, current may not divide equally between them.
Current sharing can be affected by:
Individual contact current and temperature should be measured under the maximum intended operating load.
A magnetic connector intended for industrial equipment should be evaluated under the vibration conditions of the complete product.
The review should consider:
A connector should not be described as vibration-proof without defining the actual vibration profile and acceptance criteria.
Magnetic attraction may retain the mating half near the connector before all seven contacts have reached their intended working stroke.
| Condition | Possible Risk | Required Review |
|---|---|---|
| Some Contacts Mate First | Unexpected power or signal sequence | Contact height and Pin Map sequencing |
| Laterally Offset Mating | Contact reaches an unintended target | Target dimensions and maximum credible offset |
| Captured but Not Fully Seated | Unstable electrical connection | Full-seating detection |
| Wrong Orientation | Incorrect Pin Map state | Mechanical coding and magnetic polarity |
| Removal Under Load | Transient voltage, arcing or signal interruption | Power-disable sequence and powered endurance |
The metal housing and recessed contact structure do not independently establish an IP54 or other ingress-protection rating.
The complete protection boundary may include:
Any IP, salt-spray or corrosion claim should identify the exact tested connector or assembly, test condition and acceptance criteria.
| Parameter | Product Definition |
|---|---|
| Product Type | 7 pin round magnetic pogo pin connector pair |
| Application Positioning | Industrial equipment and custom docking interfaces |
| Electrical Contacts | Seven independent contact positions |
| Connector Shape | Round compact mating interface |
| Pogo Pin Structure | Recessed spring-loaded contact arrangement |
| Mating Structure | Pogo pin side with corresponding flat target side |
| Pin Map | Project-specific power, return, detection, identification and signal allocation |
| Overall Dimensions | Confirm using the approved product drawing |
| Contact Arrangement | Confirm exact position and spacing using the approved 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 per contact through 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 |
| Vibration | Define test profile and electrical continuity acceptance criteria |
| Mating Life | Defined by working stroke, load, target and acceptance criteria |
| Ingress Protection | Applies only to a defined and tested connector or complete equipment assembly |
| Application | Possible Connector Role | Primary Engineering Focus |
|---|---|---|
| Industrial Handheld Equipment | Power, charging, identification and control interface | Vibration, contamination and repeated mating |
| Industrial Docking Stations | Power, detection, interlock and signal connection | Alignment, partial mating and retention |
| Automation Equipment | Removable module power and control interface | Vibration, electrical sequencing and mechanical support |
| Robotic Modules | Project-specific removable electrical interface | Dynamic load, retention and electrical continuity |
| Instrumentation | Power, identification, signal or service connection | Signal reference, contact stability and service cycles |
| Industrial Test Fixtures | Power, programming and diagnostic interface | Contact repeatability and fixture alignment |
| Custom Industrial Modules | Multi-function proprietary magnetic interface | Pin Map, housing integration and complete validation |
These applications are examples. Final suitability depends on the electrical load, Pin Map, mechanical assembly, vibration environment and complete equipment validation.
| Requirement | Recommended Evaluation |
|---|---|
| Pin Map | Confirm the electrical function of all seven contacts |
| Working Stroke | Verify minimum, nominal and maximum compression of all contacts |
| Contact Resistance | Measure under defined current, target and stroke conditions |
| Voltage Drop | Measure complete power paths at the intended load |
| Temperature Rise | Evaluate contacts, targets, terminations and PCB |
| Parallel Current Sharing | Measure individual contact current where contacts are paralleled |
| Magnetic Capture | Evaluate approach and alignment behaviour |
| Retention and Separation | Measure forces in intended installation directions |
| Vibration | Monitor electrical continuity under the defined vibration profile |
| Mechanical Shock | Evaluate housing, PCB and contact stability under project conditions |
| Partial Mating | Test tilted, offset and retained-but-unseated states |
| Mechanical Endurance | Use defined stroke, speed, target and acceptance criteria |
| Powered Endurance | Evaluate mating and separation under intended electrical load |
| Environmental Exposure | Evaluate required temperature, moisture, dust and contamination conditions |
| Input | Information to Provide |
|---|---|
| Pin Map | Function of all seven contacts |
| Electrical Conditions | Voltage, continuous current, peak current and signal types |
| Mechanical Space | Maximum connector 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 Requirements | Capture, seated retention and separation conditions |
| Vibration | Frequency, acceleration, direction and operating state |
| Environment | Temperature, moisture, dust, chemicals and cleaning exposure |
| Mating Frequency | Expected cycles and powered or unpowered mating state |
| Project Files | 2D drawing, 3D model, schematic, PCB layout or equipment assembly |
| Commercial | Prototype quantity, annual forecast and project stage |
It is a circular magnetic connector with seven electrical contact positions. The contacts can be assigned to project-specific power, detection, identification, control or signal functions.
Seven contacts provide additional electrical paths for functions such as power, return, detection, identification, interlock and control without requiring separate external connectors.
The surrounding housing can provide additional mechanical guidance and reduce direct side impact on the spring contacts. Final durability still depends on the complete equipment structure and mating conditions.
Yes, different contacts can be allocated to project-specific power and signal functions. The final Pin Map and electrical performance must be validated with the customer circuit.
No. Some contacts may be used for power, return, detection, identification, grounding or parallel current paths.
No universal current rating should be assumed. Current capability depends on the contact allocation, working stroke, mating targets, terminations, PCB routing, ambient temperature and temperature-rise limits.
The round multi-contact architecture, recessed contact structure and magnet-assisted mating can be integrated into industrial equipment, but final industrial suitability must be established through project-specific electrical, mechanical, vibration and environmental validation.
No. An ingress-protection rating must apply to a defined and tested connector or complete equipment assembly under stated conditions.
Capture force, seated retention and separation force should be specified and measured separately under defined conditions.
Provide the seven-contact Pin Map, voltage, current, signal types, available space, working stroke, magnetic requirements, vibration profile and available project drawings.
Review additional custom magnetic connector components for different pin counts, shapes and mating structures.
Submit the seven-contact Pin Map, electrical conditions, vibration requirements, available space and project drawings through the Get Quote & Samples page .
CTP can review the seven-contact layout, recessed pogo pin structure, working stroke, mating targets, circular magnetic arrangement, housing and PCB, FPC or wire termination. Final electrical ratings, vibration performance, magnetic retention, mating life and environmental protection 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 →
