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CTP Engineering Resource Center

Magnetic Connector & Cable Engineering Guides

Use this engineering resource center to select the correct magnetic connector, magnetic cable assembly or pogo pin product path. Compare contact counts, power and signal requirements, high-current conditions, industrial environments and wearable charging applications before submitting a custom project.

Find the Right Guide Browse Product Families
Guide Finder

Which Engineering Guide Should You Use?

Start with the question that most closely matches the current project stage. Each guide leads to the appropriate current product category after the key engineering inputs are defined.

Connector component or finished cable? Compare the supply scope, cable length, conductor, termination and opposite-end interface. Magnetic Cable Selection Guide → Unsure which connector pin count to use? Start from electrical functions, available space, connector shape and mating requirements. Connector Selection Guide → Need a basic magnetic power cable? Review the supply path, return path, polarity, voltage drop and cable-length requirements. 1–2 Pin Power Guide → Comparing 3 Pin and 4 Pin cable structures? Define auxiliary contacts, signal requirements and contact-to-wire mapping. 3 Pin vs 4 Pin Guide → Is voltage drop or temperature rise a concern? Review continuous current, peak load, loop resistance, contact allocation and validation. High-Current Solution → Will the connection operate in industrial equipment? Define installation, movement, contamination, vibration, strain relief and maintenance conditions. Industrial Application Guide → Is the interface for a body-worn device? Review charging behavior, compact packaging, sweat exposure, docking and breakaway requirements. Wearable Application Guide →
Magnetic Connector Guides

Select a Magnetic Connector by Contact Function and Structure

Use these guides when the required supply is a magnetic mating connector component rather than a complete cable assembly.

Main Selection Guide

Magnetic Connector Selection Guide

Start with electrical functions, installation space, mating orientation, connector shape and supply scope.

Use when: The correct pin count or structure has not yet been confirmed.
Open Main Guide → Low-Pin Selection

1 Pin vs 2 Pin vs 3 Pin Guide

Compare special one-contact structures, complete two-contact paths and third-contact functions.

Use when: The project requires three or fewer electrical contacts.
Compare 1–3 Pin → Contact Allocation

4 Pin vs 5 Pin Connector Guide

Determine whether four contacts complete the circuit or whether a fifth independent path is required.

Use when: A fourth or fifth control, reference or signal path is under review.
Compare 4 Pin and 5 Pin → Higher Contact Count

6 Pin vs Multi-Pin Connector Guide

Calculate the contact budget and compare single-row, multi-row and customized contact-array structures.

Use when: Six or more power, signal or control contacts are required.
Compare 6 Pin and Multi-Pin →
Magnetic Cable Guides

Define the Complete Magnetic Cable Assembly

Use these guides when the supplied product must include the magnetic connector, cable conductors, cable length, termination and mechanical protection.

Main Cable Guide

Magnetic Pogo Pin Cable Selection Guide

Compare connector components and finished cable assemblies, then define cable length, conductor and termination.

Use when: The overall cable supply scope has not been finalized.
Open Main Cable Guide → Power Path

1–2 Pin Magnetic Power Cable Guide

Review complete supply and return paths, polarity, cable length and voltage-drop considerations.

Use when: The cable primarily provides a simple power connection.
Review Power Cable Design → Wire Mapping

3 Pin vs 4 Pin Magnetic Cable Guide

Define auxiliary contacts, signal requirements, source-side wiring and device-side contact mapping.

Use when: Power must be combined with additional electrical channels.
Compare 3 Pin and 4 Pin → Electrical Performance

High-Current Magnetic Cable Solution

Define current profile, total loop resistance, voltage drop, contact allocation and temperature validation.

Use when: Current capacity, thermal performance or power loss is critical.
Review High-Current Design → Industrial Application

Industrial Magnetic Cable Application Guide

Review installation zones, movement, vibration, contamination, strain relief and maintenance access.

Use when: The cable is integrated into machinery or industrial equipment.
Review Industrial Conditions → Wearable Application

Smart Wearable Charging Application Guide

Review interface placement, compact packaging, docking behavior, sweat exposure and breakaway requirements.

Use when: The charging interface is integrated into a body-worn device.
Review Wearable Integration →
Before Opening a Guide

Prepare Four Types of Project Information

The guide can provide a more accurate product route when the electrical, mechanical, cable and operating conditions are defined together.

01

Electrical Functions

List voltage, current, power, return, signal, control, detection and identification paths.

02

Mechanical Space

Provide available length, width, height, PCB area, mating direction and device geometry.

03

Cable Requirements

Define cable length, outlet direction, conductor needs, movement and opposite-end termination.

04

Project Conditions

Provide the application, environment, validation requirements, quantity and available drawings.

Product appearance or pin count alone is not enough to complete a connector or cable selection. Use the guides to organize the project requirements before requesting a final drawing.
Current Product Families

Browse Products After the Engineering Route Is Confirmed

Enter the current product catalogs when the supply scope, contact count and basic connector structure have been defined.

Magnetic Connector Magnetic mating connector components organized by pin count and connector shape. Browse Connector Catalog → Magnetic Cable Connector Finished magnetic cable assemblies organized by pin count and round structure. Browse Cable Catalog → Pogo Pin Individual spring-loaded contacts for PCB, charging, test and conductive applications. Browse Individual Pogo Pins → Pogo Pin Connectors Multi-contact spring-loaded connector assemblies for board and device integration. Browse Connector Assemblies →
Engineering Guide FAQ

Questions About Using the CTP Engineering Guides

Should I start with Magnetic Connector or Magnetic Cable?
Start with Magnetic Connector when the required supply is the magnetic mating component. Start with Magnetic Cable when CTP must also supply cable length, conductors, mechanical protection and an opposite-end termination.
Which guide should I use when the pin count is uncertain?
Begin with the Magnetic Connector Selection Guide. List every independent power, return, signal, control and detection path before selecting a pin-count category.
Do the engineering guides replace product specifications?
No. The guides help define the project route and information required for selection. Product-specific dimensions, electrical values and validation conditions should be confirmed on the relevant product page or project drawing.
When should I use the High-Current guide?
Use it when continuous current, peak current, voltage drop, loop resistance, power loss, contact allocation or temperature rise requires review.
What is the difference between Industrial and Wearable guides?
The Industrial guide focuses on machinery installation, cable movement, vibration, contamination and maintenance. The Wearable guide focuses on compact packaging, charging behavior, body-worn exposure and user docking.
What should I submit for a custom project review?
Provide the application, electrical functions, voltage and current, available space, mating direction, cable requirements, operating environment, expected quantity and available 2D or 3D drawings.
Custom Project Review

Have the Requirements but Not the Final Product?

Submit the electrical functions, installation space, cable requirements, operating conditions and available drawings. The project can then be routed to the appropriate magnetic connector, magnetic cable or pogo pin solution.

Submit Project Requirements

CTP ENGINEERING LIBRARY

Explore Connector Engineering by Project Requirement

Use these technical resources to move from application requirements to connector selection, mechanical integration, validation and controlled production.

Wearables & Compact Devices

Industrial, Robotics & Scientific Systems

Browse all magnetic connector engineering articles →

CTP ENGINEERING PATHS

Choose the right path for your project

Move from application requirements to a connector pair, a data-capable cable assembly, or a charging cable configuration. Final specifications are confirmed against an approved drawing and project validation plan.

01

Magnetic Connectors

Connector geometry, pin layout, mechanical integration and OEM/ODM review.

Engineering overview → 02

Magnetic Data Cables

Power and signal allocation, cable exit, interface selection and assembly review.

Cable engineering → 03

Magnetic Charging Cables

Browse the complete cable catalog and shortlist a starting structure for customization.

View cable catalog →