4×4 Tact Switch SMD 4pin Tactile Push Button

The primary difference is footprint size. The TS-1187 features a compact 5.2mm × 5.2mm package (with 4×4mm actuation area), while standard 6×6 tact switches occupy 6mm × 6mm. This 44% reduction in board area makes the TS-1187 ideal for space-constrained applications such as wearables, TWS earbuds, and IoT sensors where every square millimeter matters. However, the smaller size also means a slightly reduced actuation surface area and typically shorter travel (0.15±0.10mm for the 4x4mm tact switch vs. 0.20–0.30mm for 6×6 variants). Both offer similar electrical ratings (50mA, 12V) and operating force options, so the choice primarily depends on available PCB space and ergonomic requirements.

Absolutely. With a maximum current draw of 50mA at 12VDC, the TS-1187 is specifically designed for low-power signal switching applications, including battery-powered devices such as smartwatches, fitness trackers, remote controls, and TWS earbud charging cases. The low contact resistance (≤100mΩ) minimizes power loss across the switch when closed, contributing to overall system efficiency and extended battery life. For ultra-low-power applications, we recommend evaluating the switch’s contact resistance in your power budget calculations during the design phase. The surface mount tact switch form factor also allows for automated assembly, making it ideal for high-volume wearable production runs.

The operating force — measured in grams-force (gf) — determines how much pressure is required to actuate the switch and overcome the metal dome’s resistance. The 180gf option provides a lighter touch, requiring approximately 1.76 newtons of force. This is ideal for applications where users press the button frequently (e.g., remote controls, gaming controllers) or where ergonomic comfort is a priority. The 260gf option requires approximately 2.55 newtons of force, delivering a firmer, more pronounced tactile click. This is preferred in industrial or automotive applications where operators may be wearing gloves, or where unintended actuation must be prevented. Both options are available within the TS-1187 family, allowing designers to select the surface mount tact switch 180gf or 260gf option that best suits their user interface requirements.

Standard MOQ for the TS-1187 is 1,000 pieces. However, free samples are available for qualified engineering projects and product development initiatives. To request a free sample, please contact our sales team at sales@vistarelectronics.com with your company information, project application details, and the specific part number (TS-1187) you are evaluating. For volume production orders, our team can provide competitive pricing and lead time information tailored to your required quantity and delivery schedule.

The TS-1187 is compatible with standard lead-free reflow soldering processes. Recommended soldering conditions include a peak temperature of 260°C maximum, with time above 217°C limited to 60 seconds maximum. Pre-heat should reach a maximum of 200°C for 30 seconds. Critical considerations: (1) Prevent flux penetration from the top side of the switch during soldering. (2) Do not coat switch terminals and PCB with flux prior to soldering. (3) If double reflow is required, allow the switch to return to normal temperature before the second pass. Following these guidelines ensures optimal solder joint formation and prevents contamination of internal contacts, which could lead to intermittent switching performance in low-power applications.

While the standard TS-1187 is not IP-rated for waterproof applications, Vistar Electronics offers IP67-rated sealed versions of the 4×4 tact switch platform for applications requiring protection against dust and moisture ingress. These sealed variants incorporate a polyimide film or silicone rubber layer over the metal dome contact mechanism, protecting the internal contacts from environmental contaminants. Sealed tact switches are recommended for outdoor equipment, kitchen appliances, medical devices requiring sterilization cleaning, and automotive applications. GCT offers IP67-rated SMT tactile switches with activation force options from 100g to 400g and profiles between 0.35mm and 5.10mm. Contact our engineering team to discuss IP-rated options for your specific environmental requirements.