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HIGH-CONTACT-COUNT SELECTION GUIDE

6 Pin vs Multi-Pin Magnetic Connector Selection Guide

CTP supplies custom 6-18 pin high-density magnetic connectors for OEM and ODM device programs. Pin layout, geometry, materials, electrical requirements.

Compare 6 Pin and Multi-Pin Browse Current Categories
DIRECT SELECTION RULE

Should the Project Use 6 Pin or Multi-Pin?

Start by counting every independent conductive path. Then confirm whether those contacts can be arranged within the available PCB and housing space.

In the current CTP catalog, begin with 6 Pin when exactly six defined contacts cover the complete circuit. Begin with Multi-Pin when more than six contacts, multiple rows or a customized high-density contact matrix is required.
6P

Choose 6 Pin for Six Defined Paths

A 6 Pin connector is the appropriate starting category when the complete interface uses six documented electrical contacts and no additional independent path is required.

Exactly six contact functions are defined
The layout fits the available connector area
No seventh control, signal or reference path is needed
The six-contact Pin Map is complete
Catalog route: use the 6 Pin category after all six contact assignments and the connector layout are confirmed.
MULTI

Choose Multi-Pin for a Contact Matrix

Multi-Pin is the appropriate starting category when the project requires more than six contacts, multiple rows or a customized arrangement that cannot be treated as a simple six-contact layout.

Seven or more electrical contacts are required
Single-row placement cannot fit the available area
Power, signal and control groups require planned zoning
A custom Pin Map or multi-row layout is required
Catalog route: use Multi-Pin when contact count and physical layout must be evaluated together.
CONTACT BUDGET

Count Functions Before Counting Pins

Divide the required contacts into functional groups. The total number of independent conductive paths determines whether the project remains within 6 Pin or moves to Multi-Pin.

POWER GROUP

Power and Return Paths

Record every defined supply, return, ground or reference-related contact.

How many independent power-related paths must pass through the connector?
SIGNAL GROUP

Signal or Communication Paths

Record each signal channel without assuming that one physical contact supports every protocol.

What signal type and reference path are required by each channel?
CONTROL GROUP

Control and Identification

Include detection, enable, identification, accessory recognition and other control paths.

Which device states require a separate conductive contact?
RESERVED GROUP

Reserved or Test Contacts

Only count reserved contacts when their purpose is documented in the circuit or product plan.

Is the reserved position connected and included in the PCB design?

Example Contact Budget Worksheet

Power / Return Supply, return, ground or reference paths ___ Contacts
Signal / Communication Independent signal or communication channels ___ Contacts
Control / Detection Detection, enable, identification or control ___ Contacts
Reserved / Test Documented service, test or future contacts ___ Contacts
Total Contact Count Add all independent required paths ___ Total
A total of six defined contacts starts in the 6 Pin category. A total above six starts in Multi-Pin. Final feasibility still depends on pitch, layout, connector size and electrical design.
CONTACT ARRAY ARCHITECTURE

Contact Count and Physical Layout Are Separate Decisions

Two connectors can use the same number of contacts while requiring completely different row structures, pitches and device-side installation areas.

SINGLE ROW

Linear Single-Row Layout

Consider a single row when the installation space is long enough to place every contact at the required pitch.

Confirm: total length, pitch, edge clearance and mating direction.
DOUBLE ROW

Double-Row Contact Matrix

Consider two rows when a single row would make the connector too long or when the available PCB area is wider than it is long.

Confirm: row spacing, numbering direction, PCB pads and mating orientation.
CUSTOM ARRAY

Circular or Customized Layout

Consider a customized array when the connector must follow device geometry, a restricted PCB area or a special locating structure.

Confirm: coordinate drawing, contact IDs, magnet position and mechanical locating features.
Do not select Multi-Pin only because a product has many contacts. Multi-Pin development should combine contact count, pitch, row structure, available PCB area and the complete Pin Map.
PIN MAP VALIDATION

A Multi-Pin Project Needs More Than a Total Pin Count

Prepare a contact map that identifies every position, its electrical role and its location from a clearly defined mating view.

01
Define the Viewing Direction

State whether the drawing shows the mating face, PCB side, cable side, male side or female side to avoid mirrored contact numbering.

02
Assign a Unique Contact ID

Label every contact as P1, P2, P3 and onward, and use the same numbering across the connector, PCB and wiring documents.

03
Document Every Electrical Function

State the circuit role of every contact instead of describing the complete connector only as “power and data.”

04
Mark Reserved and Unused Positions

Distinguish between an intentionally reserved contact, an unconnected position and a contact that will be added in a later product version.

05
Confirm Orientation Control

Explain how the mechanical and magnetic structure prevents the mating sides from connecting in an unintended orientation.

06
Define the Acceptance Check

State how each contact will be verified during sample validation and final product inspection.

COMMON HIGH-PIN-COUNT MISTAKES

Avoid These Errors Before Layout Development

Most Multi-Pin development problems begin with an incomplete Pin Map or with contact count being separated from the PCB and mechanical structure.

Mistake: Providing only “6–18 Pin”

A range does not define the actual project. Confirm the exact required contact count before starting the connector layout.

Mistake: Adding contacts without assigning functions

Every additional position affects PCB pads, connector size, inspection and the mating structure.

Mistake: Assuming more contacts provide more current

Current capability depends on the assigned power contacts and complete electrical and thermal design, not only the total contact count.

Mistake: Assuming Multi-Pin supports high-speed data

Contact count alone does not define protocol, data rate, signal integrity or communication support.

Mistake: Numbering from opposite viewing directions

Male, female, mating-face and PCB-side drawings can appear mirrored. Always define the viewing direction.

Mistake: Treating connector and cable as the same scope

A connector component and a finished cable assembly require different information, drawings and production scope.

CURRENT PRODUCT CATEGORIES

Continue to the 6 Pin or Multi-Pin Catalog

Use this guide while contact count and layout are still being defined. Enter the current product categories after the Pin Map, row structure and supply scope are confirmed.

Browse 6 Pin Magnetic Connectors Browse Multi-Pin Magnetic Connectors All Magnetic Connectors Return to Connector Selection Guide Need a 6 Pin Cable Assembly? Need a Multi-Pin Cable Assembly? Request Pin Map Review
6 PIN VS MULTI-PIN FAQ

High-Contact-Count Connector Selection Questions

What is the difference between 6 Pin and Multi-Pin?
The 6 Pin category starts with exactly six defined electrical contacts. Multi-Pin starts when the project requires more than six contacts or a more complex multi-row or customized contact matrix.
When is a 6 Pin magnetic connector sufficient?
Six contacts are sufficient when all required power, return, control, detection and signal paths can be assigned within P1 through P6, and the complete layout fits the available installation space.
Is a 7 Pin connector classified as Multi-Pin?
Within the current CTP product catalog, a project that requires more than six defined contacts should begin in the Multi-Pin category.
Can a 6 Pin connector use a double-row layout?
A six-contact layout may be evaluated in a single row, double row, circular arrangement or customer-specific structure according to the available PCB and housing area.
Does Multi-Pin automatically support faster data?
No. Contact count alone does not define protocol, signal type, data rate or signal integrity. The complete electrical and communication requirements must be reviewed separately.
Does adding more contacts increase the current rating?
Not automatically. Current capability depends on which contacts are allocated to power, the contact structure, materials, temperature and the complete system design.
What information should be included in a Pin Map?
Include contact IDs, viewing direction, electrical function of every contact, reserved or unused positions, connector orientation, row arrangement and corresponding PCB or wiring connections.
PIN MAP & LAYOUT REVIEW

Need Help Choosing 6 Pin or Multi-Pin?

Send the required contact count, function of each contact, available PCB area, row preference and drawings. The project can then be routed to the current 6 Pin or Multi-Pin magnetic connector category.