According to studies, around half of all soldering defects are closely related to solder paste printing. The choice of a stencil printer tailored to the specific requirements is therefore essential for high yields. Small and medium-sized electronics manufacturing companies, whether OEM, ODM or EMS, have to process components ranging from the smallest SMD chips to large semiconductors and special components. However, frequent product changes quickly become a challenge.
ESE Co., Ltd. not only offers a wide range of SMD stencil printers - from standard SMT, LED and Big Board, Back to Back to Fully Automotive Change Over. The international manufacturer offers a solution to the above-mentioned problem with the US-2000XQ SMD stencil printer. The device is distributed in Germany, Austria and Switzerland by Multi Components from Schwabach. Even the basic version of the precision stencil printer is characterized by many technical features. The printing table is driven by four ball screws and fixed with three linear guides. This ensures uniform squeegee pressure across the entire width of the print table.
Instead of a fixed front or rear transport rail as with conventional printers, adjustable front and rear rails on the ESE module position the PCB more advantageously directly above the center of the table, thereby achieving precise paste printing for components up to 01005 (0402 metric). The print module for components up to 0.4 x 0.2 mm is also suitable for BGAs. The pressure module accepts all common quick-clamping systems using flexible rails and without complex adapters. The 3-stage transport system automatically adjusts the PCBs. The squeegee pressure is program-controlled. The stencil cleaning system works in wet, dry and vacuum mode. The ESE image processing system compares the position of freely programmable reference marks on the stencil and the PCB and checks the quality of the paste print. A closed-loop control loop is connected to a solder paste inspection module (SPI). All process parameters are recorded to achieve complete traceability.
