Over-oven fixtures are commonly used in the electronics industry as fixtures for SMT (Surface Mount Technology) processing of PCB (Printed Circuit Board) assemblies. They are primarily used for PCBs with SMD (Surface Mount Device) components soldered on top of through-hole components. The materials used for over-oven fixtures include: Features and applications of over-oven fixtures include:
(1) Atmospheric Pressure and Atmospheric Pressure: According to the principles of fluid mechanics, all objects in the Earth’s atmosphere are subject to the force of gravity of the air, which is the atmospheric pressure. The atmospheric pressure acting on a unit area is the atmospheric pressure. The standard atmospheric pressure at sea level (1 atm)…
As we all know, there are various types of nozzles for SMT pick and place machines available on the market, categorized by materials such as tungsten steel, diamond steel, ceramic, plastic, aluminum, and iron. They also vary in shape, including round, square, V-shaped, and more. Choosing the appropriate nozzles can be a challenge for many…
The difference lies in their characteristics. QFN solder paste is specially formulated to address common issues encountered during SMT assembly with QFN components, such as inadequate soldering on the side, difficulty soldering on partially oxidized PCB pads, and challenges in soldering to the component itself. It offers excellent printability, even for IC pads with a…
In today’s electronic device manufacturing processes, many factories use lead-free solder flux composed mainly of rosin, resin, halogen-containing activators, additives, and organic solvents. While such fluxes offer good solderability and low cost, they leave behind high levels of residues after soldering. These residues contain halide ions, which gradually decrease electrical insulation performance and may lead…
Jigs and fixtures, despite the mere difference of a single letter, are often confused and sometimes misused. So, what exactly distinguishes a test fixture from a jig? Let Silman Tech elaborate on this in detail. Types of Jigs: Jigs can be classified into three main categories: process assembly jigs, project testing jigs, and PCB testing…
Zero emissions, environmentally clean and non-hazardous, The SMT steel mesh cleaning machine adopts a fully sealed cleaning method, with a multi-stage circulation filtration system. The cleaning agent can be reused, and waste solvents and debris are centrally treated. The solvent recovery machine can be used to recover 60-80% of the solvent. Reduces labor intensity, beautifies…
Circuit board cleaning technology is crucial for ensuring the quality and reliability of electronic products. PCBs serve as the backbone for electronic components and circuit connections, widely used in various sectors such as telecommunications, consumer electronics, computers, automotive electronics, industrial control systems, medical equipment, defense technology, aerospace, and more. The development level of the PCB…
With the increasing popularity and application of screen cleaning machines, more and more people are interested in learning about the related knowledge of these machines. Today, let’s briefly discuss the working principle and cleaning steps of the screen cleaning machine: Add cleaning solution, set the cleaning time, press the pneumatic button to start working, simple…
The classification of cleaning agents for steel mesh cleaning machines includes various types, broadly categorized into inorganic cleaning agents and organic cleaning agents. Generally, they are divided into water-based cleaning agents, semi-water-based cleaning agents, and solvent-based cleaning agents. Silman Tech has developed specialized equipment and products for cleaning SMT steel meshes, including fully automatic ultrasonic…
