As the electronics manufacturing industry surges toward high-efficiency automation, the performance of surface-mount technology (SMT) components directly determines end-product reliability. Shenzhen Kinghelm Electronics Co., Ltd. introduces the KH-12X12X4.3H-SMT tactile switch, whose miniature 12×12×4.3mm footprint and ultralight 1.07g weight unlock new possibilities for high-density PCB designs. Its internal structure combines silver-plated stainless steel contacts with a PPA engineering plastic base, maintaining zero mechanical damage even under rigorous testing—withstanding 300g terminal lateral static loads and 3kg knob pull forces—establishing a safety barrier for assembly and usage.

Kinghelm KH-12X12X4.3H-SMT Product Image

At the electrical performance level,this switch has a high stability: under 1kHz/50mA test conditions, contact resistance remains reliably below 100mΩ, ensuring silky-smooth signal transmission; when DC250V is applied between terminals and housing, insulation resistance consistently exceeds 100MΩ, eliminating leakage risks; and during AC250V withstand voltage tests, it endures 1mA induced current for one minute without breakdown. This electrical stability stems from its optimized 160±30gf operating force and 0.40±0.1mm travel distance, delivering crisp tactile feedback.

Confronting complex operating environments, the Kinghelm KH-12X12X4.3H-SMT delivers compelling results: material properties show no degradation within its -40℃ to 85℃ storage range; functional responses remain consistent in operating environments from -20℃ to 70℃. After enduring 96 hours of "sauna testing" at 60℃ with 95% humidity, or 4 hours of continuous corrosion in 5% salt spray, contact resistance remains firmly below 200mΩ. Particularly noteworthy is its 100,000-cycle no-load life test—operating continuously at 120 cycles per minute while maintaining actuation force variation within 30% of initial values—validating Kinghelm’s relentless pursuit of long-term reliability.

Optimized for modern production lines, this switch achieves deep SMT process compatibility: it withstands 260±5℃ reflow peak temperatures, with the precise 3±0.5s thermal window perfectly matching 1.6mm standard substrates. When terminals are immersed 0.5mm deep in 260℃ solder baths for 3 seconds, they achieve over 95% solder coverage. Lead-free construction further aligns with global green manufacturing trends, significantly reducing ecological burdens. Engineers should strictly observe three operational protocols: manual soldering temperatures must not exceed 350℃, overloading forces are prohibited, and corrosive gas environments should be avoided—these measures maximize switch performance potential.

From home appliances to industrial IoT, the Kinghelm KH-12X12X4.3H-SMT empowers diverse sectors: in television control panels, it serves as a precise channel selector; embedded in microwave timing systems, it becomes a silent commander of cooking duration; integrated into rice cooker interfaces, it transforms into a texture-adjusting magic dial. In industrial settings, it functions both as instrumentation start-stop hubs and machinery operation nerves; within IoT terminals, it shoulders dual missions of portable device power management and smart home triggering.

Kinghelm KH-12X12X4.3H-SMT Specification

Kinghelm has condensed two decades of electronic interconnect expertise into this micro switch. Its [敏感词]-grade environmental tolerance and high SMT line compatibility provide manufacturers with cost-effective yet reliable control solutions. Packaged in tape-and-reel format, the KH-12X12X4.3H-SMT continuously feeds into smart devices’ core control units via global automated placement equipment, embodying the technological philosophy of "tiny components driving monumental innovation" with every precise actuation.

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.