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Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 2–7 Pin Magnetic Pogo Pin Connector Series includes multiple single-row contact configurations for custom electronic devices requiring removable magnetic power, detection, control or signal interfaces. Different pin counts use different contact layouts and housing lengths, so each configuration should be selected according to the customer Pin Map, available installation space and electrical requirements. Final dimensions, contact pitch, working stroke, current, voltage, magnetic retention, mating life and environmental performance must be confirmed for the selected model 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 2–7 Pin Magnetic Pogo Pin Connector Series includes multiple single-row connector configurations for custom power, detection, control and signal interfaces. Available contact counts include 2, 3, 4, 5, 6 and 7 pins. Each configuration uses its own housing length, contact arrangement and project-specific electrical definition. Final dimensions, contact pitch, working stroke, electrical ratings, magnetic retention, mating life and environmental performance must be confirmed for the selected model and complete customer assembly.
The CTP 2–7 pin magnetic pogo pin connector series is designed for custom electronic devices that require a removable magnetic electrical interface with different numbers of conductive contacts.
The series includes 2 pin, 3 pin, 4 pin, 5 pin, 6 pin and 7 pin configurations. The products shown use compact single-row contact layouts, with connector length and internal contact arrangement changing according to the selected pin count.
This page represents a connector family rather than one universal part number. Each pin-count configuration should therefore be reviewed using its own drawing, Pin Map, dimensional requirements and validation conditions.
| Pin Count | Possible Electrical Architecture | Primary Engineering Review |
|---|---|---|
| 2 Pin | Basic two-conductor power, detection or control interface | Polarity, current, voltage drop and partial mating |
| 3 Pin | Power and return plus detection or identification | Contact sequence and power-enable logic |
| 4 Pin | Power pair plus two control, detection or signal contacts | Pin Map, signal reference and fault states |
| 5 Pin | Power, return, identification and additional control functions | Electrical protection and channel allocation |
| 6 Pin | Power and multiple project-specific control or signal paths | Current sharing, contact sequence and interference |
| 7 Pin | Multi-function power, detection, identification and signal interface | Pin Map, thermal performance and complete channel validation |
These examples are not universal Pin Maps. Contact count alone does not determine current capability, voltage rating, charging function or communication protocol.
The correct magnetic connector should be selected from the number of independent electrical functions required by the customer device, rather than selecting a higher pin count simply because more contacts are available.
Possible contact functions include:
The project should first define a complete Pin Map and then select the minimum practical number of contacts required by the electrical architecture.
| Project Requirement | Possible Starting Configuration | Why |
|---|---|---|
| Simple DC power connection | 2 Pin | Provides separate supply and return paths |
| Power plus device detection | 3 Pin | Adds one independent detection contact |
| Power plus detection and identification | 4 Pin | Provides additional project-specific logic paths |
| Power plus several control functions | 5–6 Pin | Allows more independent control or signal assignments |
| Multi-function docking interface | 6–7 Pin | Provides additional contacts for power, control and signal allocation |
These are selection examples rather than fixed rules. The final pin count must be determined from the customer circuit and required fault states.
| Feature | Series Characteristic | Required Confirmation |
|---|---|---|
| Pin Count | 2, 3, 4, 5, 6 or 7 contacts | Select according to the required Pin Map |
| Contact Layout | Single-row multi-contact arrangement | Confirm exact contact pitch and position by drawing |
| Housing Length | Changes according to contact count and selected model | Confirm overall length, width and height |
| Pogo Pin Side | Spring-loaded conductive contacts | Confirm free height, working stroke and contact force |
| Mating Side | Project-specific mating targets | Confirm target dimensions, material and surface finish |
| Magnetic Structure | Magnet-assisted attachment and retention | Confirm capture, seated retention and separation force |
| Termination | Varies by selected connector structure | Confirm PCB, FPC, wire or project-specific termination |
A higher pin count does not automatically mean a higher current rating. Electrical capability depends on the contact structure and the complete power path.
Important variables include:
A simplified complete-path resistance is:
Rpath = Rhost-PCB + Rtermination1 + Rpogo + Rinterface + Rtarget + Rtermination2 + Rdevice-PCB
The voltage drop is:
Vdrop = I × Rpath
The resistive power loss is:
Ploss = I² × Rpath
Continuous current should be confirmed through complete-path voltage-drop and temperature-rise testing for the selected connector.
Higher-pin-count configurations may allow multiple contacts to be connected in parallel for power or return.
Parallel contacts do not necessarily carry equal current because of differences in:
Individual contact current and temperature should therefore be measured under the maximum intended electrical load.
Multiple conductive contacts can be assigned to signals, but a 4 pin, 5 pin, 6 pin or 7 pin magnetic pogo pin connector does not automatically support USB, UART, I2C or another communication protocol.
The complete signal path may include:
Host Controller → Host PCB → Protection Components → Magnetic Connector → Device PCB → Device Controller
Signal performance depends on:
Magnetic attraction can assist connector approach and attachment. It should not be the only feature controlling final contact alignment.
| Mating Function | Recommended Control |
|---|---|
| Initial Capture | Magnet arrangement and approach geometry |
| Orientation Control | Housing geometry and magnetic polarity |
| Final Alignment | Housing datums and mechanical mating surfaces |
| Pogo Pin Compression | Mechanical stops and dimensional tolerance stack |
| Seated Retention | Magnetic structure and customer mechanical support |
| Connector Removal | Defined separation direction and release-force requirement |
Capture force, seated retention and separation force should be specified separately because they represent different connector behaviours.
All spring-loaded contacts should remain inside their approved compression range when the connector reaches the final seated position.
A simplified working-stroke relationship is:
S = Hfree - Hseated
The complete dimensional stack may include:
| Stroke Condition | Possible Result |
|---|---|
| Insufficient Compression | Intermittent power, unstable detection or resistance variation |
| Approved Working Stroke | Intended contact force and electrical condition |
| Excessive Compression | Spring bottoming, target damage or housing load |
| Unequal Compression | Different resistance and current distribution between contacts |
A multi-contact magnetic connector can enter several intermediate electrical states before all contacts reach their intended working stroke.
| Condition | Possible Risk | Required Review |
|---|---|---|
| One End Contacts First | Unexpected power or signal sequence | Contact-height tolerance and approach angle |
| Only Some Contacts Are Seated | Partial power or incorrect detection state | Pin sequence and full-seating logic |
| Laterally Offset Mating | Contact reaches the wrong target | Contact pitch, target width and maximum offset |
| Magnetically Retained but Not Fully Seated | Unstable electrical connection | Independent full-seating verification |
| Wrong Orientation | Incorrect Pin Map or reversed polarity | Mechanical coding and magnetic polarity |
| Removal Under Load | Transient voltage, arcing or communication interruption | Power-disable sequence and powered endurance |
| Parameter | Series Definition |
|---|---|
| Product Type | 2–7 pin magnetic pogo pin connector series |
| Available Pin Counts | 2, 3, 4, 5, 6 and 7 contacts |
| Contact Layout | Single-row arrangement according to selected model |
| Pin Map | Project-specific power, return, detection, identification, control and signal allocation |
| Housing Dimensions | Different according to pin count and selected structure |
| Contact Pitch | Confirm using the selected model 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 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 for each selected model under stated test conditions |
| Environmental Protection | Applies only to a defined and tested connector or complete assembly |
| Application | Possible Connector Role | Primary Selection Focus |
|---|---|---|
| Portable Electronics | Charging, power, detection or control interface | Pin count, size and repeated mating |
| Smart-Home Equipment | Power, docking or removable module connection | Pin Map and mechanical integration |
| Wearable Electronics | Charging, detection or accessory interface | Compact size and exposed-contact protection |
| Industrial Handheld Devices | Power, control or service connection | Working stroke, vibration and contamination |
| Charging Docks | Power, detection, identification and control | Alignment and partial-mating behaviour |
| Custom Electronic Modules | Project-specific multi-contact interface | Pin Map and housing customization |
These applications are examples. Final connector selection depends on the electrical architecture, available space, mechanical integration and environmental conditions.
| Input | Information to Provide |
|---|---|
| Required Pin Count | 2, 3, 4, 5, 6 or 7 contacts |
| Pin Map | Function of every power, return, detection and signal contact |
| Electrical Conditions | Voltage, continuous current, peak current and signal types |
| Available Space | Maximum length, width, height and restricted regions |
| Contact Pitch | Required pitch or 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 Requirements | Capture, seated retention and separation requirements |
| 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 family of magnetic spring-contact connectors available with different numbers of electrical contacts. This series includes 2, 3, 4, 5, 6 and 7 pin configurations.
Start by defining the complete Pin Map. Count the independent power, return, detection, identification, control and signal functions required by the device, then select the minimum practical contact count.
Not automatically. Current capability depends on contact geometry, working stroke, target structure, termination, PCB routing and thermal conditions.
Yes. Contacts can be allocated to project-specific power and signal functions, but the complete Pin Map and signal channel must be validated with the customer circuit.
No. Pin count alone does not establish USB or another communication protocol. Complete channel design and validation are required.
No. Housing dimensions and contact arrangements can change according to pin count and selected connector structure.
Pin count, housing dimensions, contact arrangement, termination and magnetic structure can be reviewed according to project requirements and tooling feasibility.
No. Electrical ratings must be confirmed for the selected model, contact allocation, working stroke and complete customer assembly.
Provide the required pin count, Pin Map, voltage, current, signal type, available installation space, working stroke, magnetic requirements and available project drawings.
Review additional custom magnetic connector components for different contact counts, shapes and mating structures.
Submit the required pin count, Pin Map, electrical conditions, available space and drawings through the Get Quote & Samples page .
CTP can review the 2–7 pin contact configuration, Pin Map, pogo pin working stroke, mating-target structure, magnetic layout, housing and PCB, FPC or wire termination. Final electrical ratings, signal capability, magnetic retention, mating life and environmental performance must be confirmed through the selected model drawing 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 →
