2x4mm SMD Tactile Switch — 2 Pin Top Push Button

The TS-1100S is a miniature 2 pin SMD tactile switch developed for electronic products that require a compact, top-actuated push button. With a nominal body size of 2x4mm, this surface-mount switch is designed for applications where PCB space, button placement, and operating feel are important considerations.

As a top push SMT tactile switch, the TS-1100S is operated by pressing the actuator from above. This configuration can be considered for compact user-interface assemblies, control buttons, and electronic devices with a vertically aligned button mechanism. Its surface-mount construction allows the component to be installed directly on the PCB using suitable solder pads.

The TS-1100S is specified for a rating of 50mA at 12V DC and features a travel of 0.2±0.10mm. Operating force options include 180gf and 260gf, while the available operating life specifications are 50,000 and 100,000 cycles. The exact force and life combination should be confirmed for the selected version before production.

Manufactured in an ISO 9001:2015 certified facility, this SMD push button switch is fully compliant with RoHS 3 and REACH regulations. Vistar Electronics supplies electronic switches for OEM, ODM, and bulk purchasing projects. If you are looking for a small SMD push button for a new PCB design, contact our team to confirm the technical drawing, product configuration, packaging, and availability of the TS-1100S.

The following table summarizes the available specifications for the TS-1100S. Check the final product drawing and technical documentation before approving the component for mass production.

Operating force, mechanical life, and other performance characteristics may depend on the selected version. Confirm the corresponding specifications with Vistar before placing a production order.

Selecting a miniature SMD push button requires more than checking its nominal body dimensions. The PCB footprint, button height, operating force, and electrical rating should all be considered during the design stage.

Verify the PCB Footprint

A 2x4mm size designation describes the nominal product dimensions, but it does not define the complete solder-pad geometry. Before routing the PCB, use the manufacturer’s technical drawing to check the pad dimensions, pad spacing, component orientation, and recommended clearance. Do not create the final footprint based on the body size alone.

Check Actuator Height and Mechanical Clearance

The height of the tactile switch affects the position of the external button and the overall enclosure design. Check the actuator height, the movement required for activation, and the clearance between the button and nearby components. The mechanical structure should not apply excessive lateral force to the switch during operation.

Select the Appropriate Operating Force

The 180gf and 260gf options provide different pressing characteristics. A design with frequent user input may require a different button feel from a device with occasional setup or reset operations. Evaluate the switch together with the external actuator, the supporting structure, and the intended user experience.

Review the Electrical Rating

The TS-1100S is specified for 50mA at 12V DC. Engineers should compare the actual circuit voltage and current with the switch’s rated limits. Transient conditions, switching frequency, and the characteristics of the connected circuit may also need to be considered. This miniature tactile switch should not be used as a substitute for a dedicated high-current power switch.

Confirm SMT Assembly Requirements

Surface-mount components can be used in automated PCB assembly when the specific part and packaging are suitable for the production process. Before volume manufacturing, confirm the applicable soldering conditions, packaging format, and assembly recommendations for the selected TS-1100S version. For additional information about PCB switch mounting methods, visit the SMT vs Through-Hole Connector Guide.

Start by checking the available PCB area and the mechanical space around the button. The nominal 2x4mm size of the TS-1100S should be considered together with the complete component height, actuator dimensions, and recommended solder pads.

Next, evaluate the operating force and travel. The TS-1100S offers 180gf and 260gf operating force options, with a travel of 0.2±0.10mm. The selected version should match the pressing characteristics required by the finished product.

The electrical rating is equally important. The stated rating is 50mA at 12V DC. Compare these values with the actual circuit requirements and confirm whether the switch is appropriate for the intended load. If the application involves higher current or unusual switching conditions, a different component may be necessary.

Finally, confirm the exact product version, operating life, footprint, packaging, and technical documentation with the supplier. Requesting samples before mass production can help engineers verify button feel, PCB fit, and compatibility with the finished assembly.

What Is a 2x4mm SMD Tactile Switch?

A 2x4mm SMD tactile switch is a miniature surface-mount push button with a nominal body size of 2x4mm. It is designed for PCB assembly and provides a momentary switching function when the top actuator is pressed. The TS-1100S is a 2-pin version rated for 50mA at 12V DC, with a 0.2±0.10mm travel and selectable operating forces of 180gf or 260gf.

Because of its compact size, this type of switch is commonly considered for handheld electronics, portable devices, and space-constrained PCB assemblies where a small mechanical push button is required. The top-push configuration means the actuator is operated from above the board, which aligns with the typical external button arrangement in many consumer electronic products.

2 Pin SMD Tactile Switch — Structure and Configuration

A 2 pin SMD tactile switch provides two electrical terminals in a surface-mount package. When the actuator is pressed, the internal contact mechanism closes the circuit. When released, the mechanism returns to its normally open state. This momentary behavior is different from a latching switch, which maintains its state until pressed again.

The 2-pin configuration is suitable for simple ON/OFF or signal-input functions. It is often used for reset buttons, mode selection buttons, and user-input keys in compact electronic products. For applications requiring additional PCB retention or redundant contacts, a 4-pin tactile switch may be more appropriate.

2x4mm Tactile Switch — Compact PCB Integration

The 2x4mm tactile switch format is one of the smallest standard sizes in Vistar’s tactile switch range. This size is chosen when the PCB footprint must be minimized while maintaining a reliable tactile feel. The compact body makes the switch suitable for dense board layouts where larger tactile switches cannot fit.

When integrating a 2x4mm tactile switch into a PCB design, engineers should verify the complete land pattern from the manufacturer’s drawing rather than deriving it from the nominal body size. Pad dimensions, actuator height, and clearance around the switch all affect assembly and button feel.

Top Push SMT Tactile Switch — Mechanical Considerations

A top push SMT tactile switch is actuated by pressing the button from above the PCB. The external button or keypad mechanism must align with the switch actuator and provide sufficient travel clearance for the 0.2mm stroke. Excessive lateral force or misalignment can affect switching reliability and reduce operating life.

During enclosure design, engineers should verify the relationship between the switch actuator and the external button. If the button does not reach the actuator fully, the switch may not activate reliably. If the button applies continuous preload to the actuator, the switch may remain partially engaged and wear prematurely.

SMD Push Button Switch — Assembly and Soldering

An SMD push button switch is designed for surface-mount assembly. During reflow soldering, the switch body is exposed to elevated temperature. The recommended soldering profile for the specific component should be followed to avoid deformation or damage to the housing and internal contacts. For high-volume production, packaging format (reel or bag) should be matched to the assembly line.

Applications Across Industries

This 2x4mm SMD tactile switch is found across consumer electronics, portable devices, IoT hardware, and OEM control assemblies. Typical applications include reset buttons, mode selection inputs, setup keys, and compact user interface controls. The product is suitable for designs where a small, top-actuated momentary switch is required and where the electrical load is within the 50mA / 12V DC rating.

Why Choose Vistar as Your Tactile Switch Supplier

Vistar Electronics is a trusted manufacturer and supplier of tactile switches serving customers in consumer electronics, industrial automation, and communication equipment. Our tactile switch lineup covers 2x4mm, 4x4mm, 4.5×4.5mm, 6x6mm, and 12x12mm configurations with various pin counts, operating forces, and mounting options.

With ISO 9001:2015 certification and a commitment to continuous improvement, Vistar is your reliable partner for high-quality switching solutions. For more technical resources, including PCB layout guidelines and switch selection guides, visit our technical blog or contact our engineering support team directly.

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