01
Electrical Functions
Confirm power, ground, detection, identification, control, signal and selected data requirements.
CTP supplies custom magnetic pogo pin cable for OEM and ODM device programs. Pin layout, geometry, materials, electrical requirements, sealing and validation.
Pin count only describes the number of electrical contacts. A complete cable assembly also depends on the conductor, length, termination, routing and mechanical protection.
Confirm power, ground, detection, identification, control, signal and selected data requirements.
Define the required routing distance while considering voltage drop, installation space and cable movement.
Operating current, peak current and cable length influence conductor selection and thermal performance.
Determine whether the other end requires USB, bare wire, PCB, FPC or another customized interface.
Confirm the cable exit direction, bending space, routing path and connector installation orientation.
Review pulling, bending, vibration, repeated movement, strain relief and exposure requirements.
Confirming the required supply scope prevents the project from entering the wrong product category.
Use the connector catalog when your engineering team will design and assemble the cable, PCB or device-side wiring around the magnetic mating component.
Use the cable catalog when CTP must supply the magnetic connector head together with the cable, conductor, termination and mechanical protection structure.
The former cable catalog combined pin count, electrical performance and application into the same structure. The current catalog uses individual pin-count categories, while the former performance and application pages remain available as supporting selection guides.
Use the current 2 Pin category for a defined two-contact magnetic cable. One-pin cable structures should be reviewed separately because there is no dedicated current 1 Pin catalog.
Use the 3 Pin or 4 Pin catalog according to the actual number of power, ground, detection, control, signal or selected data contacts required.
Begin with the current 5 Pin or 6 Pin category when the contact count is defined. Use Multi-Pin for higher counts, multi-row layouts or complex contact allocation.
Use the Round category when circular geometry, rotational mating or the physical layout matters more than classifying the cable only by pin count.
The opposite-end interface defines how the magnetic cable connects to the power source, PCB or customer equipment.
Suitable when the cable must connect to a compatible USB-A power source or customer-defined interface.
Use when the project requires a USB-C physical interface. Electrical functions and protocol support still require separate confirmation.
Suitable for direct integration into equipment, power supplies, control boards or customer assemblies.
Use when the cable must terminate directly at a board, solder point or customer-defined PCB structure.
Consider an FPC-related structure when the device requires a compact, flexible internal connection.
Selected plugs, board connections and customer-specific terminations can be evaluated from drawings.
Changing one cable requirement may affect the electrical, mechanical and assembly design of the complete cable.
| Design Input | Why It Matters | Related Decisions | Information to Provide |
|---|---|---|---|
| Cable Length | Affects device routing, resistance, voltage drop and user handling. | Conductor selection, jacket, routing space and strain relief. | Required total length and acceptable routing tolerance. |
| Operating Current | Influences conductor specification, contact allocation and thermal review. | Wire size, cable length, contact structure and temperature. | Normal current, peak current, voltage and duty conditions. |
| Signal or Data Requirement | Not every cable or contact arrangement is suitable for every signal requirement. | Pin allocation, conductor arrangement, shielding and interface design. | Signal type, protocol, frequency and channel definition. |
| Flexing & Movement | Repeated bending or movement changes the mechanical cable requirement. | Jacket, conductor structure, bend area and strain relief. | Fixed installation, occasional bending or repeated moving application. |
| Cable Outlet Direction | Determines whether the cable interferes with the device housing or installation space. | Overmolding, connector housing, bend radius and routing. | Straight, side outlet, angled outlet or drawing. |
| Environmental Requirement | Temperature, moisture, chemicals and abrasion affect material and sealing evaluation. | Jacket material, overmolding, housing and device-side sealing. | Operating environment and required validation conditions. |
Use these pages after the basic cable structure is understood, but the project still requires a more specific engineering focus.
Review the relationship between current, contact allocation, cable length, conductor requirement and temperature conditions.
Review cable routing, vibration, repeated movement, abrasion, strain relief and equipment-side installation requirements.
Review compact connector dimensions, lightweight cable routing, user handling, docking behavior and device-side integration.
Most early cable selection errors come from treating the cable as an isolated accessory rather than part of the complete electrical and mechanical system.
List every power, ground, detection, control and signal connection before selecting the cable category.
Cable length should be evaluated together with current, conductor selection, voltage drop and temperature.
USB-C describes a physical interface. Required power, protocol, signal and communication functions still need to be defined separately.
The cable may interfere with the housing or create an excessive bend if the outlet and routing direction are not confirmed early.
Cable material should be reviewed according to flexibility, abrasion, temperature, environment and assembly method.
Final protection depends on the connector, cable overmolding and the complete sealing structure of the customer device.
Use the current catalog when the required pin count or round structure has been confirmed. Return to this guide when cable length, termination or electrical functions still require evaluation.
Send the required electrical functions, cable length, opposite-end interface, current, installation space and available drawings. The project can then be routed to the appropriate magnetic cable category.