Shenzhen Kinghelm Electronics Co., Ltd. has long been committed to providing global customers with high-quality, highly reliable electronic component solutions. Its tactile switch series is widely used in consumer electronics, home appliances, automotive electronics, and industrial control applications. As one of the company’s flagship products, the Kinghelm tactile switch KH-12X12X12H-SMT combines premium materials, precision design, and rigorous production control to deliver a high-performance, highly reliable, surface-mount technology (SMT) tactile switch tailored to automated production requirements.

Kinghelm KH-12X12X12H-SMT Product Image

The Kinghelm KH-12X12X12H-SMT tactile switch features a standard SMD package design with dimensions of 12mm × 12mm × 12mm. This compact, standardized size facilitates efficient layout on various PCBs and enables seamless integration into automated SMT assembly lines. Its package structure utilizes high-strength materials, including PPA engineering plastics and stainless steel components, which undergo meticulous cleaning and surface treatment processes to ensure flawless appearance, uniform plating, and precisely formed terminals. Each unit weighs approximately 2.05 grams and is supplied in standard embossed tape and reel packaging, making it highly suitable for automated SMT production lines, significantly improving assembly efficiency while reducing labor costs and operator errors.

In terms of electrical performance, the Kinghelm KH-12X12X12H-SMT offers excellent contact resistance, insulation resistance, and dielectric strength. The rated electrical parameters are DC 12V 50mA, with contact resistance below 100mΩ and insulation resistance of at least 100MΩ (tested at DC 250V). Its dielectric strength allows it to withstand AC 250V (50Hz or 60Hz) at 1mA leakage current for one minute without breakdown. These critical performance indicators undergo strict in-house laboratory testing and production sampling to ensure the switch can reliably deliver stable control signals in real-world applications, minimizing risks of contact failure, short circuits, or dielectric breakdown.

Mechanically, the switch also demonstrates excellent performance. It is available in actuation force options of 160±30gf or 260±50gf to meet diverse product and user tactile preferences. With an actuation travel of 0.40±0.1mm, the switch delivers clear, tactile feedback, giving users a confident and precise confirmation when pressed, thus enhancing the overall user experience of end products. The tactile ratio is maintained between 30% and 70%, ensuring consistent and comfortable rebound characteristics. The KH-12X12X12H-SMT also passes stringent terminal and actuator strength tests, withstanding 300g static load applied to the terminal tip for one minute and enduring up to 3kg of pull force along the operating direction without structural or electrical damage, ensuring robustness during assembly and use.

Regarding durability, the Kinghelm KH-12X12X12H-SMT is designed for a lifespan of over 100,000 actuations (tested under no-load conditions at a rate of 100–120 cycles per minute). Even after this rigorous testing, the switch maintains contact resistance below 200mΩ and an actuation force change within 30% of its initial value. The product has also passed multiple environmental tests, including high-temperature, low-temperature, thermal cycling, and salt spray testing. It maintains stable electrical and mechanical performance under storage and operating conditions ranging from -40℃ to 85℃, with insulation and contact resistance meeting specifications and no signs of mechanical or electrical degradation. In salt spray testing, performed at 35±2℃ with a cycle of 4 hours of spraying followed by 1 hour of rest for four cycles, the switch maintains contact resistance below 200mΩ and insulation resistance above 100MΩ, demonstrating excellent corrosion resistance and environmental adaptability.

To ensure compatibility with common soldering processes, the Kinghelm KH-12X12X12H-SMT has been fully validated for reflow soldering, hand soldering, and solderability. It achieves over 95% wetting coverage in solderability tests at 260±5℃ for 3±0.5 seconds with no abnormal oxidation or deformation. Under hand soldering conditions, it also ensures reliable terminal solder joints without introducing excessive mechanical stress that could damage the switch body. The reflow soldering heat resistance testing confirms compliance with industry-standard thermal profiles, with no visual or functional abnormalities observed throughout, demonstrating its full suitability for standard SMT reflow soldering processes.

Kinghelm KH-12X12X12H-SMT Specification

The Kinghelm KH-12X12X12H-SMT has broad application potential in products such as televisions, microwave ovens, rice cookers, set-top boxes, air conditioner remote controls, audio systems, automotive electronics, and other devices requiring tactile human–machine interface inputs for functions such as power switching, menu navigation, and temperature or mode selection. With its compact size, highly sensitive tactile feedback, long-life design, and excellent electrical performance, it not only delivers a comfortable user experience but also significantly enhances the overall quality and reliability of end products.

In product design and application, we particularly advise customers to carefully control soldering conditions to avoid excessive temperature or prolonged soldering time that could compromise the switch body or its electrical characteristics. Users should avoid applying mechanical loads beyond specification and confirm that surrounding materials will not emit corrosive gases that could lead to contact failure or degradation. Kinghelm remains committed to providing customers with comprehensive technical support and quality service, ensuring that our products deliver the high performance and reliability expected in their end-use applications.

In summary, the Kinghelm tactile switch KH-12X12X12H-SMT is a high-quality switch specifically designed for modern electronic products requiring automated production. With standardized dimensions, excellent electrical and mechanical performance, strong environmental resistance, and mature process compatibility, it represents an ideal and reliable choice for switch control in a wide range of electronic devices. Shenzhen Kinghelm Electronics Co., Ltd. welcomes customers to consult and purchase, and we will continue to uphold our professional, efficient, and trustworthy approach to deliver more high-quality, reliable electronic component solutions.

About Kinghelm

Shenzhen Kinghelm Electronics Co., Ltd.（www.kinghelm.net）has technical backbones from Tsinghua University and UESTC, and has introduced overseas returnee professionals. Kinghelm is able to develop highly reliable and high-performance antenna and connector products.KH series products of "Kinghelm" brand include Beidou/GPS antennas, RF adapter connectors, plug connector, electrical data connectors, terminals, and customized vehicle harnesses, industrial / medical connectors, and special antenna connectors."Kinghelm connects world", Kinghelm has grown with the development of China's Beidou industry. Starting from supplying Beidou/GPS dual mode antennas, IPEX terminals, and RF adapter cables for automotive manufacturers, Kinghelm has continuously developed products. Currently, it has a series of WiFi, Bluetooth, NB-loT, LoRa, Zigbee, UWB, and GSM antennas, RFID tags, RF adapter cables, standard microwave antennas, vehicle grade SMA, SMB, FAKRA holders, coaxial cables, and can customize non-standard antenna connectors based on customer drawings or samples.