01
Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 2 Pin Magnetic Pogo Pin Connector uses two independent spring-loaded electrical contacts in a compact magnet-assisted mating structure. The two contacts can form a project-specific power and return pair or be assigned to other defined electrical functions according to the customer circuit. Final polarity, voltage, current, contact pitch, working stroke, magnetic retention, mating life 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 2 Pin Magnetic Pogo Pin Connector uses two independent spring-loaded electrical contacts in a compact magnet-assisted mating structure. The two contacts can be assigned as a power and return pair or used for other project-specific electrical functions. Final polarity, voltage, current, contact pitch, working stroke, magnetic retention, mating life and environmental performance must be confirmed using the approved connector drawing and complete customer assembly.
This 2 pin magnetic pogo pin connector is designed for compact devices that require a removable two-contact electrical interface with magnet-assisted attachment.
The product shown contains two independent spring-loaded pogo pin contacts. The surrounding magnetic and structural elements assist mating and help position the connector relative to the opposing interface.
Because the connector provides only two electrical contacts, the electrical architecture is comparatively simple, but correct polarity, contact sequencing, working stroke and fault protection become especially important.
Final connector performance must be reviewed together with the customer PCB, mating targets, enclosure, electrical load and mechanical mating conditions.
| Connector Element | Visible Structure | Engineering Requirement |
|---|---|---|
| Electrical Contacts | Two independent spring-loaded pogo pins | Define polarity, contact function and electrical load |
| Contact Arrangement | Two separated contact positions | Confirm center distance and mating-target dimensions by drawing |
| Housing | Compact molded insulating structure | Confirm dimensions, material and enclosure integration |
| Magnetic Elements | Multiple metallic or magnetic features around the contact area | Define magnetic function and polarity using the approved drawing |
| Peripheral Structure | Green outer feature visible around part of the housing | Confirm whether it provides sealing, location or assembly support |
| Termination | Project-specific internal connection | Confirm PCB, FPC, wire or solder termination |
Two electrical contacts are commonly used when the interface only requires a simple electrical path.
| Possible Architecture | Contact 1 | Contact 2 | Primary Engineering Review |
|---|---|---|---|
| DC Power | Positive supply | Power return | Polarity, current, voltage drop and temperature rise |
| Detection Circuit | Detection signal | Electrical reference | Threshold, contact sequence and fault state |
| Control Interface | Control signal | Signal reference | Logic voltage and protection |
| Test Interface | Test node | Reference node | Fixture alignment and test current |
These allocations are examples only. The final Pin Map must be defined from the actual customer circuit.
When the two contacts are used as a DC power pair, one contact normally provides the supply path and the other provides the return path.
The design should not rely only on user orientation to prevent reversed polarity.
Polarity control may include:
The electrical response to a wrong, offset or partially seated mating state should be defined before the connector is released for production.
Magnets may pull the two connector halves together, but magnetic attraction should not be the only feature controlling the final contact position.
| Mating Function | Recommended Control |
|---|---|
| Initial Capture | Magnet arrangement and approach geometry |
| Orientation | Housing geometry and magnetic polarity |
| Final Alignment | Mechanical datums, guides and mating surfaces |
| Pogo Pin Compression | Mechanical stops and dimensional tolerance stack |
| Seated Retention | Magnetic structure and customer-device support |
| Removal | Defined separation direction and release-force requirement |
Initial capture, seated retention and separation force should be measured separately because they describe different mechanical behaviours.
Both spring-loaded contacts must operate inside their approved working stroke at the final seated position.
A simplified working-stroke calculation is:
S = Hfree - Hseated
where:
The tolerance stack may include:
| Stroke Condition | Possible Result |
|---|---|
| Insufficient Compression | Intermittent power or unstable contact resistance |
| Approved Working Stroke | Intended contact force and electrical condition |
| Excessive Compression | Spring bottoming, target indentation or housing stress |
| Unequal Compression | Different resistance between the two electrical paths |
The electrical performance of a 2 pin connector cannot be determined from the pogo pins alone.
A simplified complete power path is:
Rpath = Rsource-PCB + Rtermination1 + Rpogo + Rinterface + Rtarget + Rtermination2 + Rreturn-PCB
The voltage drop is:
Vdrop = I × Rpath
The resistive loss is:
Ploss = I² × Rpath
The project should define:
Current capability must be confirmed through complete-path voltage-drop and temperature-rise testing.
A two-contact magnetic connector may be used as part of a charging system, but the connector itself does not define a fast-charging protocol.
Complete charging performance depends on:
Power Source → Charging Controller → Connector → Device Power Management → Battery
The connector should therefore be specified using measurable electrical requirements such as current, voltage drop and temperature rise rather than a generic fast-charging claim unless the complete charging system has been validated.
Magnetic attraction can hold the connector close to the final seated position before both contacts reach their intended working stroke.
| Condition | Possible Risk | Required Review |
|---|---|---|
| Only One Contact Touches | Incomplete circuit or unexpected electrical state | Contact-height tolerance and mating angle |
| Laterally Offset Connection | Contact misses target or reaches unintended conductive area | Target size and maximum credible offset |
| Magnetically Retained but Not Fully Seated | Unstable power or resistance variation | Full-seating verification |
| Reverse Orientation | Reversed polarity | Mechanical and electrical polarity protection |
| Conductive Foreign Object | Short circuit between exposed contacts | Current limiting and exposed-contact protection |
| Removal Under Load | Transient voltage or contact arcing | Power-disable sequence and powered-endurance testing |
A surface magnetic connector may leave the electrical contacts accessible when the mating part is removed.
Possible foreign objects include:
For energized contacts, the product should evaluate current limiting, normally de-energized states, short-circuit protection and power-enable logic.
The visible housing and peripheral structure do not independently establish an IP54 or other ingress-protection rating.
The complete protection boundary may include:
Any IP, corrosion or salt-spray statement should identify the exact tested assembly, test condition and acceptance criteria.
| Parameter | Product Definition |
|---|---|
| Product Type | 2 pin magnetic pogo pin connector |
| Electrical Contact Count | Two independent spring-loaded contacts |
| Primary Architecture | Two-conductor project-specific electrical interface |
| Pin Map | Power/return or other project-specific contact assignment |
| Connector Shape | Compact molded contact-style housing |
| Magnetic Structure | Magnet-assisted capture and retention |
| Overall Dimensions | Confirm using the approved drawing |
| Contact Pitch | Confirm center distance 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 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 stroke, electrical load, target and acceptance criteria |
| Ingress Protection | Applies only to a defined and tested connector or complete device assembly |
| Application | Possible Connector Role | Primary Engineering Focus |
|---|---|---|
| Portable Electronics | Two-wire power or charging interface | Polarity, exposed contacts and repeated mating |
| Smart-Home Devices | Power, docking or detachable module interface | Contact stability and user interaction |
| Charging Docks | Positive and return charging path | Voltage drop, temperature rise and partial mating |
| Consumer Electronics | Compact removable power interface | Space, polarity and fault protection |
| Industrial Handheld Equipment | Charging or low-complexity electrical interface | Vibration, contamination and contact wear |
| Custom Electronic Modules | Project-specific two-contact connection | Electrical architecture and mechanical integration |
These applications are examples. Final suitability depends on the electrical load, polarity architecture, mechanical design and complete device validation.
| Requirement | Recommended Evaluation |
|---|---|
| Pin Map | Confirm the exact function and polarity of both contacts |
| Contact Pitch | Verify contact center distance and target positions |
| Working Stroke | Verify minimum, nominal and maximum compression of both contacts |
| Contact Resistance | Measure under a defined current, target and working stroke |
| Voltage Drop | Measure the complete positive and return path |
| Temperature Rise | Evaluate contacts, targets, terminations and PCB |
| Reverse Polarity | Evaluate reversed or unintended orientation |
| Magnetic Capture | Evaluate connector approach and alignment behaviour |
| Retention and Release | Measure force in intended use and removal directions |
| Partial Mating | Test one-contact-first, offset and retained-but-unseated states |
| Short Circuit | Evaluate conductive objects, moisture and adjacent-contact bridging |
| Mechanical Endurance | Use defined stroke, target, speed and acceptance criteria |
| Powered Endurance | Evaluate mating and separation under intended electrical load |
| Environmental Exposure | Test representative moisture, dust, vibration and cleaning conditions |
| Input | Information to Provide |
|---|---|
| Pin Map | Function and polarity of both contacts |
| Electrical Conditions | Voltage, continuous current and peak current |
| Mechanical Space | Maximum length, width, height and restricted regions |
| Contact Pitch | Required center distance and mating-target dimensions |
| 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, PCB layout or device assembly |
| Commercial | Prototype quantity, annual forecast and project stage |
It is a magnetic connector with two independent spring-loaded electrical contacts. The two contacts can form a power and return pair or perform another project-specific two-conductor electrical function.
Yes, they may be used as a positive and return path in a charging system. The final current, voltage drop, temperature rise and charging behaviour must be validated with the complete device.
No. Fast charging depends on the power source, charging controller, battery-management system and complete electrical path.
Polarity can be controlled through housing geometry, magnetic polarity, mechanical keying and circuit-level reverse-polarity protection.
The circuit may remain open or enter an unintended electrical state, depending on the system design. One-contact-first and partial-mating conditions should therefore be tested.
No universal rating should be assumed. Current and voltage depend on the contact geometry, working stroke, mating targets, termination, PCB routing and thermal environment.
No. An ingress-protection rating must apply to a defined and tested connector or complete customer assembly under stated conditions.
Initial capture, seated retention and separation force should be specified and measured separately in their defined directions.
Provide the two-contact Pin Map, polarity, voltage, current, available space, contact pitch, working stroke, magnetic requirements and available drawings.
Review additional custom magnetic connector components for different pin counts and mating structures.
Submit the Pin Map, voltage, current, available space and project drawings through the Get Quote & Samples page .
CTP can review the two-contact electrical architecture, polarity, pogo pin working stroke, mating targets, magnetic arrangement, housing and PCB, FPC or wire termination. Final electrical ratings, magnetic retention, mating life, environmental protection and complete device performance 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 →
