SM-200 4-Pin 2.5mm Magnetic Pogo Pin Connector

SM-200 is a 4-pin rectangular magnetic pogo pin connector designed for compact charging and electrical connection applications.

The connector uses a 2.5 mm pogo pin pitch, C6801 brass conductive components and N52 magnets. It is rated for 3A current and 12V voltage, with a maximum spring-pin contact resistance of 50 mΩ.

The 90° connector structure is suitable for applications where PCB space or housing layout requires a right-angle magnetic connection. The magnetic mating structure helps the two sides align during connection while allowing the connector to separate without a conventional mechanical plug-and-unplug action.

SM-200 can be supplied in its existing configuration or evaluated as a non-standard magnetic connector based on the customer's PCB, housing and product drawing.

SM-200 technical specifications

• The applicable IP68 condition should be confirmed according to the final connector assembly, sealing structure and test requirements of the project.

4-pin layout with 2.5mm pitch

SM-200 uses four electrical contacts arranged at a 2.5 mm pitch.

This layout provides multiple contact positions within a compact rectangular connector body and can be used when a device requires several power or electrical contact paths in limited installation space.

The 2.5 mm pitch is a fixed characteristic of the current SM-200 configuration. When designing the PCB or housing around this connector, the mating position and contact layout should follow the approved product drawing rather than relying only on the nominal pitch.

For projects requiring a different pin spacing or contact arrangement, a non-standard magnetic connector can be evaluated separately.

3A / 12V electrical contact performance

SM-200 is rated for 3A current and 12V voltage.

The pogo pin contact resistance is specified at 50 mΩ maximum. The electrical performance of the finished assembly can also be influenced by contact compression, mating alignment, PCB design, surface cleanliness and operating temperature.

For products operating close to the rated current, the complete connector assembly should be verified under the actual load and thermal conditions of the device.

The 3A specification should be treated as the rating of SM-200 rather than being replaced by the broader current capability available from other customized magnetic connector designs.

N52 magnetic mating structure

SM-200 uses N52 magnets to provide magnetic alignment and retention between the mating connector parts.

The magnetic connection allows the two sides to locate each other during mating, which can simplify user operation in charging docks, compact electronic products and other frequently connected equipment.

Magnetic force should be matched to the finished product rather than selected independently. Housing thickness, magnet position, connector orientation and the required separation force can all affect the final user experience.

The current page previously listed a suction-force value without a clear engineering unit. For this reason, the magnetic force should follow the approved drawing and confirmed test specification before being published as a fixed SM-200 parameter.

Right-angle structure for compact PCB layouts

The SM-200 connector uses a 90° structure.

A right-angle magnetic connector can be useful when the contact interface needs to be positioned along the side of a PCB or housing instead of directly above it.

During product integration, the PCB location, connector height, enclosure opening and magnetic mating direction should be evaluated together. Proper alignment helps the pogo pins compress in their intended direction and reduces unnecessary lateral force on the spring contacts.

If the existing SM-200 orientation does not fit the PCB layout, the mounting and housing structure can be reviewed as part of a non-standard connector project.

Mechanical life and environmental performance

SM-200 is specified for a minimum mechanical life of 10,000 mating cycles.

The current specification also includes a 48-hour salt spray test. Actual product life can vary with mating frequency, environmental exposure, surface contamination and mechanical alignment in the final device.

The current design is listed with an IP68 waterproof rating. Because waterproof performance depends on the complete sealing structure, customers using the connector in wet or outdoor environments should confirm the exact IP test configuration for the finished assembly.

This distinction is important when the connector becomes part of a customer-designed housing, because connector-level and complete-device waterproof performance are not automatically the same.

Typical applications

SM-200 is intended for compact products requiring a multi-contact magnetic electrical interface.

Typical applications can include charging docks, portable electronic equipment, compact control modules, smart hardware and devices that require a detachable magnetic power or electrical connection.

The connector should be selected according to the actual current, voltage, PCB layout, mating direction, available installation space and required environmental protection.

For applications with different electrical or mechanical requirements, another standard magnetic connector or a customized configuration may be more suitable than modifying the device around SM-200.

Custom SM-200 magnetic connector options

When the standard SM-200 configuration does not fit the product structure, customization can start from a 2D drawing, 3D model, PCB layout or physical sample.

For an SM-200-based project, the most relevant items to review include:

• Pin position and contact layout

• Magnetic pole direction

• Connector housing dimensions and material

• Mounting orientation

• Waterproof sealing structure

• Contact material and plating requirements

• Electrical rating according to the finished design

For projects requiring a completely different pin count, pitch or connector shape, Xinteng can evaluate a new non-standard magnetic connector instead of forcing the SM-200 structure into the application.

Standard pogo pins, pogo pin connectors and magnetic connector products are also available when a custom design is unnecessary. If a project requires special metal components or supporting structural parts, drawing-based precision machining can be evaluated together with the connector solution.

Information required for engineering evaluation

To determine whether SM-200 can be used directly, provide the PCB layout or basic mechanical dimensions of the device.

Useful information includes the required current and voltage, available installation space, connector orientation, mating direction, pin assignment, waterproof requirement and estimated order quantity.

If the product is still in the early development stage, a dimensional sketch or sample can also be used for the initial review.

This allows the connector to be selected around the actual device requirements instead of relying only on a general magnetic connector specification.

Quality verification

Production and inspection should follow the approved SM-200 drawing and confirmed project specification.

Relevant verification can include dimensional inspection, contact resistance measurement, mating-cycle testing and salt-spray testing according to the agreed product requirements.

For customized versions, electrical and environmental requirements should be confirmed before sample production so that test results correspond to the actual connector configuration being supplied.

Send your drawing for SM-200 evaluation

If your design requires a 4-pin, 2.5 mm pitch magnetic connector with a 90° structure, send your PCB layout, housing drawing or product sample for evaluation.

The engineering team can check whether the existing SM-200 can be used directly or whether the pin arrangement, magnetic direction, housing, mounting structure or sealing design should be modified.

Samples can be arranged after the main electrical and mechanical requirements are confirmed.

FAQ

1. What are the rated current and voltage of the SM-200 magnetic connector?

SM-200 is rated for 3A current and 12V voltage. The spring-pin contact resistance is specified at 50 mΩ maximum. The complete connector assembly should still be verified under the actual electrical load and thermal conditions of the finished device.

2. What is the pin spacing of SM-200?

SM-200 uses four contacts with a 2.5 mm pogo pin pitch. PCB pads and the mating structure should be designed according to the approved SM-200 drawing so that the connector aligns correctly during magnetic mating.

3. Is SM-200 an IP68 magnetic connector?

The current SM-200 specification lists an IP68 waterproof rating. The exact waterproof performance should be confirmed according to the connector assembly, sealing structure and test conditions used in the project. Device-level IP68 performance should not be assumed solely from the connector rating.

4. Can the SM-200 structure be customized?

Yes. Pin position, magnetic pole direction, housing dimensions, mounting orientation, waterproof structure, material and plating requirements can be evaluated according to the customer's drawing or PCB layout. If the required changes are substantial, a new non-standard magnetic connector can be developed instead.