Starting from January 2026, more than ten mainstream SMT contract manufacturers in the Yangtze River Delta and Pearl River Delta have successively adjusted their annual human resource budgets, raising the proportion of technical training investment from 3.2% in 2025 to 4.8%, with a focus on key nodes of SMT Solder application such as Solder Paste selection and matching, stencil aperture design verification, and dynamic reflow profile calibration. This change stems from the repeated cold solder joint and bridging defects that have recently emerged in the batch delivery of AEC-Q200 automotive-grade devices by multiple customers, exposing a clear gap in frontline process personnel's understanding of basic SMT solder physical properties such as wettability changes of lead-free solders and sensitivity to Flux residue.

A listed EMS enterprise in Suzhou completed its first closed training session for 24 core process technical backbones on January 15, 2026. The course content is entirely based on reverse analysis of actual production line NG cases, covering the differences in slump thresholds of solders with different alloy ratios in 01005 Component Soldering, as well as the measured data feedback mechanism for the 0.8°C narrowing of the peak temperature window for Sn96.5Ag3.0Cu0.5 solder under nitrogen atmosphere. All training instructors are senior PE engineers from its high-reliability production lines in Shenzhen and Hefei, rather than lecturers from external training institutions. This measure is intended to ensure that the transfer of SMT solder process knowledge is highly aligned with real mass production conditions.

A national-level specialized, sophisticated, unique and innovative "Little Giant" enterprise in Shenzhen focusing on high-end SMT solder R&D simultaneously disclosed that the number of free process support work orders it provided to downstream customers in the fourth quarter of 2025 surged by 67% year-on-year, with over 40% of requests involving excessive solder joint voidage after Reflow Soldering. The root cause points to the lack of systematic understanding among customer-side technical personnel regarding the matching relationship between new low-volatility flux and existing chain conveyor speed. This phenomenon further confirms that the implementation of SMT solder technology has moved from the stage of simple material selection into the deep zone of strong material-equipment-process coupling.

It is worth noting that the "Electronic Assembly Process Talent Capability Map (Trial)" publicized by the Ministry of Industry and Information Technology in February 2026, for the first time included sub-capability items such as SMT solder thermodynamic behavior analysis and the impact of multi-layer PCB heat capacity distribution on solder melting uniformity into the intermediate process engineer certification system. This means that SMT solder-related knowledge is gradually being upgraded from an auxiliary skill attached to equipment operation in the past to an independently evaluable, progressive, and traceable core process capability module.

A national-level SMT training base in Guangzhou has launched a new solder process simulation platform starting from the 2026 spring semester. This platform is connected to heat conduction model parameters collected from real production lines for 12 types of mainstream SMT solders under different combinations of PCB thickness, copper foil density, and component layout density. Trainees can repeatedly adjust reflow profiles in a virtual environment and immediately observe the evolution of solder joint micro-morphology. This training method, which deeply binds SMT solder physical properties with production line variables, is quietly changing the traditional apprenticeship model that relies mainly on empirical memory.