01
Pin Map and Contact Functions
Define the function of each power, return, signal, control or detection contact.
CTP 2–8 Pin Dual Row Waterproof Magnetic Pogo Pin Connector Series includes multiple paired magnetic interfaces with different contact counts, housing lengths and dual-row arrangements. Each configuration combines a spring-loaded pogo pin side, a flat target side, a metal housing and a perimeter sealing structure. The Pin Map, dimensions, working stroke, electrical ratings, magnetic retention, mating life and ingress protection are confirmed according to the selected model, approved drawing and complete 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: The CTP 2–8 Pin Dual Row Waterproof Magnetic Pogo Pin Connector Series includes multiple connector pairs with different contact counts, housing lengths and dual-row layouts. Each configuration contains a spring-loaded pogo pin side, a flat target side, a metal housing and a perimeter sealing structure. This page represents a connector series rather than one universal part number. Dimensions, Pin Map, working stroke, electrical ratings, magnetic performance, mating life and ingress protection must be confirmed for the selected model and complete customer assembly.
This 2–8 pin dual row waterproof magnetic pogo pin connector series is designed for custom devices that require a removable power, charging, detection or signal interface within a compact installation area.
The series contains several paired magnetic connector structures. One half uses spring-loaded pogo pin contacts, while the opposing half uses flat target contacts. Integrated magnets may assist connector approach and retention.
The products shown are not one identical connector with interchangeable contact counts. Different 2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin and 8 pin configurations may use different housing lengths, contact layouts, dimensions and magnetic structures.
Each model should therefore be reviewed using its own approved drawing, Pin Map and validation requirements.
| Pin Count | Possible Project Functions | Primary Engineering Review |
|---|---|---|
| 2 Pin | Power and return | Polarity, current, voltage drop and exposed-contact safety |
| 3 Pin | Power, return and detection or identification | Contact sequence, detection logic and power enable |
| 4 Pin | Power pair plus two control or signal contacts | Pin Map, return paths and partial-mating conditions |
| 5 Pin | Power, detection, identification and additional control | Contact allocation, PCB routing and protection |
| 6 Pin | Power and multiple project-specific signals | Signal return, contact spacing and electrical isolation |
| 7 Pin | Power, identification and several control or data paths | Pin sequence, interference and connector alignment |
| 8 Pin | Multi-function power and signal interface | Current sharing, crosstalk, thermal performance and validation |
These allocations are examples only. The number of contacts does not automatically determine the supported current, voltage, data protocol or application.
A dual-row layout can increase the number of available contacts without requiring the full connector length of an equivalent single-row design.
The actual contact distribution depends on the selected pin count and should be confirmed using the model drawing.
The drawing should identify:
Dual-row density also reduces the spacing between adjacent contacts. Contamination, target offset and contact-to-contact bridging must therefore be evaluated during product integration.
| Connector Element | Primary Function | Required Confirmation |
|---|---|---|
| Pogo pin side | Provides compliant spring-loaded electrical contacts | Working stroke, contact force and termination |
| Flat target side | Provides the opposing contact surfaces | Material, finish, flatness and mechanical support |
| Dual-row contact insert | Positions the contacts within the housing | Pitch, row spacing, insulation and tolerance |
| Metal housing | Supports the connector and mating geometry | Mounting, insulation, grounding and enclosure integration |
| Permanent magnets | Assist capture and seated retention | Capture, retention, removal and magnetic-sensitive regions |
| Perimeter sealing structure | May support a sealed connector interface | Compression, sealing land and complete assembly testing |
The correct pin count should be selected from the required electrical functions rather than from connector appearance alone.
Possible contact functions include:
Power return, signal return, shield and metal housing should not automatically be treated as the same electrical node.
The following table shows possible allocations. It does not represent one universal Pin Map for the complete series.
| Configuration | Example Allocation | Key Validation |
|---|---|---|
| 2 Pin | Positive power and return | Current, polarity, temperature rise and short circuit |
| 3 Pin | Positive power, return and detection | Detection timing and power-enable sequence |
| 4 Pin | Power pair, detection and identification | Partial mating and wrong-accessory response |
| 5 Pin | Power pair plus three project-specific signals | Logic levels, reference path and protection |
| 6 Pin | Parallel power contacts plus detection and control | Current sharing and individual contact temperature |
| 7 Pin | Power, identification and several communication contacts | Signal integrity and contact-sequence behaviour |
| 8 Pin | Power, return, detection and multiple signal contacts | Complete channel, crosstalk and fault-state validation |
A multi-pin magnetic connector provides several conductive paths, but it does not automatically support USB, video or another high-speed protocol.
Data performance depends on the complete channel:
Host Controller → Host PCB → Protection Components → Pogo Pin Interface → Target Contacts → Accessory PCB → Accessory Controller
High-speed channel development may require evaluation of:
Low contact resistance and a higher pin count do not independently prove high-speed communication performance.
The visible perimeter sealing structures can form part of a waterproof magnetic connector design. They do not independently establish an IP rating for every connector or finished device.
The complete sealing path may include:
Mated and unmated protection should be defined separately. A connector that is protected when fully connected may not provide the same protection when the cable or accessory is removed.
Final sealing compression should be controlled by mechanical geometry and stops rather than by magnetic attraction alone.
Sealing performance can vary because of:
The gasket compression and pogo pin working stroke must both remain within their approved ranges at the final assembled position.
Magnets may guide the connector halves during approach, but the final contact position should be established by the housings, locating features and mechanical stops.
| Interface Function | Recommended Control |
|---|---|
| Initial capture | Magnet arrangement and approach geometry |
| Orientation control | Housing shape, keyed features and magnet polarity |
| Final alignment | Mechanical guides, datums and mating faces |
| Pogo pin compression | Mechanical stops and dimensional stack |
| Sealing compression | Final gap and sealing-land geometry |
| Seated retention | Magnets and customer-device support structure |
| Connector removal | Defined release direction and force requirement |
Initial capture, seated retention and separation force should be measured separately because they represent different connector behaviours.
A simplified working-stroke calculation is:
S = Hfree - Hseated
where:
The tolerance calculation should 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, housing load or PCB stress |
| Unequal compression | Different contact resistance and uneven current distribution |
Some 4–8 pin configurations may use multiple contacts in parallel for positive power or return paths.
Parallel contacts do not automatically divide current equally. Current distribution can be affected by:
Individual contact current and temperature should be measured under the maximum intended load.
A simplified electrical path is:
Rpath = Rhost-PCB + Rtermination1 + Rpogo + Rinterface + Rtarget + Raccessory-PCB
The voltage drop is:
Vdrop = I × Rpath
The resistive loss is:
Ploss = I² × Rpath
The project should define:
The current capacity of the series cannot be determined from pin count or product appearance alone.
Magnetic attraction may hold the connector close to its intended position before all contacts reach their approved working stroke and the sealing structure is fully compressed.
| Partial-Mating Condition | Possible Risk | Required Review |
|---|---|---|
| One side contacts first | Unexpected power or signal sequence | Approach angle and contact-height tolerance |
| Laterally offset connection | A pogo pin contacts an adjacent target | Target dimensions, pitch and maximum offset |
| Magnetically retained but not seated | False detection or unstable power | Independent full-seating verification |
| Incomplete gasket compression | Environmental protection is not established | Final gap and mechanical stop |
| Conductive contamination | Short circuit or leakage between contacts | Power control and fault protection |
| Removal under load | Transient voltage, arcing or communication interruption | Power-disable sequence and powered-endurance testing |
| Parameter | Series Definition |
|---|---|
| Product Type | 2–8 pin dual row waterproof magnetic pogo pin connector series |
| Contact Count | 2, 3, 4, 5, 6, 7 or 8 contacts |
| Contact Arrangement | Dual-row or paired-row layout according to the selected model |
| Mating Structure | Spring-loaded pogo pin side with flat target side |
| Housing | Metal housing with insulating contact insert |
| Sealing Structure | Perimeter sealing interface integrated according to the enclosure |
| Pin Map | Project-specific power, return, detection, identification and signal functions |
| Overall Dimensions | Confirm using the selected model drawing |
| Contact Pitch | Confirm same-row pitch and row spacing using the drawing |
| Working Stroke | Confirm minimum, nominal and maximum 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 measured separately |
| Mating Life | Defined by model, stroke, load, target, environment and acceptance criteria |
| Contact Finish | Confirm separately for pogo pins, targets and terminations |
| Ingress Protection | Applies only to a defined and tested connector or complete device assembly |
| Termination | PCB, FPC, wire or project-specific subassembly |
| Application | Possible Interface Role | Primary Engineering Focus |
|---|---|---|
| Outdoor electronics | Charging, power or removable accessory connection | Sealing, contamination, cable pull and temperature |
| Industrial handheld devices | Docking, charging, communication or service interface | Vibration, working stroke and contact durability |
| Smart-home devices | Charging base, detachable module or accessory interface | Frequent mating, cleaning and exposed-contact safety |
| Portable electronic equipment | Compact power and signal interface | Size, magnetic retention and power sequencing |
| Custom charging docks | Power, detection, identification and control | Alignment, current sharing and partial mating |
| Sealed electronic equipment | Flush or shallow removable electrical interface | Complete feedthrough and enclosure validation |
These are possible application categories. Final suitability depends on the selected connector and complete customer product.
| Requirement | Recommended Evaluation |
|---|---|
| Pin Map | Confirm the function and electrical state of every contact |
| Dimensions and Pitch | Verify contact pitch, row spacing and target positions |
| Working Stroke | Verify minimum, nominal and maximum compression |
| Contact Resistance | Measure with defined current, target, stroke and sample condition |
| Voltage Drop | Measure the complete power path at intended current |
| Temperature Rise | Evaluate individual contacts, PCB, termination and housing |
| Parallel Current Sharing | Measure individual contact current and temperature where applicable |
| Magnetic Capture | Evaluate approach and orientation behaviour |
| Retention and Release | Measure force in the intended use and removal directions |
| Partial Mating | Test tilted, offset and retained-but-unseated states |
| Short Circuit | Evaluate moisture, metal objects and adjacent-contact bridging |
| Sealing Compression | Verify minimum, nominal and maximum final gap |
| Ingress Protection | Test the defined connector or complete enclosure assembly |
| Mechanical Endurance | Use defined stroke, speed, target and acceptance criteria |
| Powered Endurance | Evaluate mating and separation under intended electrical load |
| Environmental Exposure | Test representative water, dust, vibration and cleaning conditions |
| Production Variation | Evaluate contacts, targets, housings, magnets and sealing tolerances |
| Input | Information to Provide |
|---|---|
| Pin Count | Required 2, 3, 4, 5, 6, 7 or 8 contact configuration |
| Pin Map | Function of every power and signal contact |
| Electrical Conditions | Voltage, continuous current, peak current and signal types |
| Mechanical Space | Maximum length, width, height and restricted regions |
| Contact Layout | Required pitch, row spacing and target arrangement |
| Mating Direction | Approach, final seating and removal direction |
| Working Stroke | Minimum, nominal and maximum compression |
| Termination | PCB, FPC, wire or project-specific subassembly |
| Magnetic Requirements | Capture, seated retention and release conditions |
| Sealing Requirement | Mated state, unmated state, intended IP target and test condition |
| Environment | Temperature, water, dust, vibration and cleaning exposure |
| Durability | Mating frequency, powered removal and acceptance 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 several connector models with different contact counts, housing lengths and layouts. Each model requires its own approved drawing and specification.
The series uses dual-row or paired-row contact arrangements according to the selected model. The number of contacts in each row should be confirmed using the model drawing.
Yes, contacts can be assigned to project-specific power, return, detection, identification and signal functions. The final Pin Map must be defined by the customer circuit.
No. Electrical ratings depend on the selected contacts, Pin Map, working stroke, termination, PCB routing and complete thermal environment.
No. High-speed capability requires a defined physical layer and complete channel validation.
No. The sealing structure can form part of a waterproof interface, but an IP rating must apply to a defined and tested connector or complete device assembly.
This depends on whether the device-side contact insert is independently sealed. Mated and unmated protection should be evaluated separately.
Initial capture, seated retention and separation force should be specified separately in their defined directions.
Customization can be reviewed according to the Pin Map, available space, tooling feasibility, expected quantity and validation scope.
Provide the required pin count, Pin Map, voltage, current, available space, contact layout, working stroke, sealing requirement and available drawings.
Review additional custom magnetic connector components for different contact counts and mechanical structures.
Submit the required pin count, Pin Map, electrical conditions, available space, sealing requirements and drawings through the Get Quote & Samples page .
CTP can review the 2–8 contact arrangement, dual-row layout, pogo pin working stroke, mating targets, magnetic structure, sealing interface, housing and PCB, FPC or wire termination. Final electrical ratings, signal performance, mating life, ingress 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 →
