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Apart from all types
of Printed Circuit Boards (PCBs) such as
Prototype PCB, Standard PCB, Aluminum
PCB, HDI PCB, Flex PCB, Flex-Rigid PCB,
High-Frequency PCB, Thick copper PCB, High-Tg PCB and Halogen-Free PCB, Pcbmain also manufactures solder paste stencils to meet Surface Mount Technology (SMT) requirements.
Stencils, also called
SMT stencils, play a key role in transferring
accurate amount of solder paste to correct positions on bare circuit boards ready for assembly. In other words, stencils can fast and efficiently ensure the most accurate solder paste amount and
optimal electrical connection. With solder stencils, it is possible to use metal squeegee blades to apply solder paste easily over the openings on PCBs and make stencil to be well aligned with
the surface of the advanced circuit board.
According to
SMT stencil manufacturing technologies, we
provide two types of stencils: laser-cut stencils and chemical-etch stencils.
Laser-cut stencils
The openings are lasered on
100% stainless steel. Generally speaking, this kind of stencil can be produced with high quality and a high degree of precision within a short time.
• Laser Stencil Advantages:
high accuracy; barely influenced by objective elements; trapezoid opening beneficial for demoulding; suitable for accurate cutting; reasonable price;
• Disadvantages: relative
low manufacturing speed.
Chemical-etch stencil
The openings are etched into
the metal using acid. Usually this kind of stencil offers better protection on material temper and hardness.
• Solder Paste Stencils Supplier
Advantages: one-time
formation; relatively high manufacturing speed; low cost;
• Disadvantages: tending to
form sand clock shape or large openings; numerous manufacturing stages and accumulating errors; unsuitable for fine pitch stencils; bad for environmental protection.
