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Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 1 Pin Circular Magnetic Pogo Pin Connector Series includes multiple round magnetic contact structures for project-specific power, detection, identification and single-contact electrical interfaces. This page presents a customizable connector series rather than one universal part number. The complete electrical circuit, return path, dimensions, working stroke, magnetic retention, current rating and environmental performance must be confirmed for the selected structure and customer device.
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 page presents a customizable 1 pin circular magnetic pogo pin connector series rather than one universal part number. The complete electrical circuit, return path, dimensions, working stroke, magnetic retention, electrical rating and environmental performance must be confirmed for the selected connector structure and customer device.
CTP develops custom 1 pin circular magnetic pogo pin connector structures for project-specific power, detection, identification and single-contact electrical interfaces.
The spring-loaded contact provides controlled compliance against its mating target, while the surrounding magnetic structure may assist connector capture, orientation or retention.
This series may include different connector diameters, heights, target structures, mounting methods, magnet arrangements and termination options. Every configuration should be confirmed using its own drawing and technical specification.
One conductive pin alone cannot form a complete electrical circuit. A complete power or signal path requires a separate electrical return path.
The return path may be provided by:
The surrounding circular structure shown in a product image should not be assumed to be electrically conductive unless this is confirmed in the selected model drawing.
The customer should provide a complete circuit definition showing the function of the central contact and the location of the electrical return.
| Architecture | Possible Function | Required Confirmation |
|---|---|---|
| Central pogo pin with conductive outer ring | Project-specific two-path power or signal interface | Outer-ring material, isolation, polarity and current path |
| Central pogo pin with chassis return | Single supply or signal contact using a separate chassis path | Chassis conductivity, safety, corrosion and return-path stability |
| Single detection contact | Presence, lid, accessory or docking detection | Logic voltage, pull-up or pull-down circuit and contact state |
| Single identification contact | Resistor, analog level or accessory identification | Electrical reference, tolerance and contamination response |
| Single power contact with remote return | Project-specific charging or power delivery | Location and capability of the second conductive path |
| Service or test contact | Temporary programming, measurement or fixture connection | Fixture architecture, access control and cycle requirement |
These are possible architectures rather than guaranteed functions of every product shown on this page.
Project-specific options may include:
Available options must be confirmed according to tooling feasibility, installation space, required quantity and validation scope.
| Parameter | Series Definition |
|---|---|
| Product Type | Custom circular magnetic pogo pin connector interface |
| Spring Contact Count | 1 central pogo pin |
| Complete Circuit | Requires a separately defined electrical return path |
| Contact Function | Project-specific power, detection, identification, signal or test function |
| Housing Shape | Circular or project-specific round structure |
| Overall Dimensions | Confirm by selected model drawing |
| Mating Target | Model-specific flat, recessed or project-specific target |
| Working Stroke | Model-specific; confirm minimum, nominal and maximum compression |
| Contact Force | Report at a defined working stroke |
| Voltage and Current | Defined according to the selected contact and complete circuit |
| Contact Resistance | Report with test current, target, stroke and measurement method |
| Magnetic Performance | Capture, seated retention and separation force are specified separately |
| Mating Life | Model- and test-condition-specific |
| Contact Finish | Confirm separately for pogo pin, target and termination |
| Ingress Protection | Applies only to a defined tested connector or complete enclosure |
| Termination | PCB, FPC or wire integration according to the selected design |
Provide:
Provide:
A simplified working-stroke calculation is:
S = Hfree - Hseated
where:
The connector should remain inside its approved compression range across the complete housing, PCB, target and assembly tolerance stack.
Provide separate requirements for:
Magnet grade or magnetic force alone does not define the final connector performance.
Possible project conditions include:
Magnetic attraction may guide the connector during approach, but the housing and mechanical stops should establish the final mating position.
The tolerance stack may include:
Insufficient compression can create unstable electrical contact. Excessive compression can load the spring, target, housing, PCB or termination.
| Requirement | Recommended Evaluation |
|---|---|
| Electrical Topology | Confirm the central contact and complete return path |
| Contact Resistance | Measure with a defined target, stroke, current and sample condition |
| Voltage Drop | Measure the complete power path at the intended current |
| Temperature Rise | Evaluate contacts, return path, termination and surrounding housing |
| Working Stroke | Verify minimum, nominal and maximum assembled conditions |
| Magnetic Force | Measure capture, retention and separation in defined directions |
| Partial Mating | Evaluate offset, tilted and incomplete-contact conditions |
| Short Circuit | Evaluate conductive objects, moisture and incorrect mating |
| Mechanical Endurance | Use project-defined stroke, cycle speed, target and acceptance criteria |
| Powered Endurance | Evaluate repeated connection under the intended electrical state |
| Environmental Exposure | Test the defined connector or complete device assembly |
| Input | Information to Provide |
|---|---|
| Contact Function | Power, detection, identification, signal or test function |
| Return Path | Outer ring, chassis, remote contact or another conductor |
| Electrical Conditions | Voltage, continuous current, peak current and signal type |
| Mechanical Space | Maximum diameter, height, depth and restricted regions |
| Mating Structure | Approach direction, target position and removal direction |
| Termination | PCB, FPC or wire connection |
| Magnetic Requirement | Capture, retention and separation conditions |
| Environment | Temperature, humidity, dust, vibration and cleaning exposure |
| Validation | Resistance, temperature rise, mating life and environmental criteria |
| Project Files | 2D drawing, 3D model, schematic, PCB layout or device assembly |
| Commercial | Prototype quantity, annual forecast and project stage |
No. This page presents a series of 1 pin circular magnetic connector structures. Each selected model requires its own drawing and specification.
Not by itself. A complete electrical circuit requires a separate return path through an outer ring, chassis contact, remote contact or another conductor.
This depends on the selected design. It may be a magnet, conductive target, housing component or combined structure. The drawing must identify its electrical function.
Pin count alone does not establish this capability. The complete circuit, return path, signal method and host electronics must be defined.
No. Voltage and current ratings depend on the selected contact, return path, working stroke, termination, PCB design and thermal environment.
No. Any ingress-protection claim must identify the exact tested connector or complete enclosure, mating state and test condition.
Customization can be reviewed according to installation space, electrical requirements, tooling feasibility, project quantity and validation scope.
Provide the contact function, complete return path, voltage, current, available space, mating direction and any available drawings.
Submit the device structure, electrical circuit, return path, installation space and available drawings through the Get Quote & Samples page .
CTP can review the contact structure, mating target, working stroke, magnetic arrangement, housing integration and PCB, FPC or wire termination. Final electrical ratings, environmental protection, mating life and complete product performance must be confirmed for the selected model and customer device.
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 →
