Charge for stencil fabrication

Yes, in most cases stencil fabrication is charged as part of the PCB Assembly process. It is typically included under NRE (Non-Recurring Engineering) cost, especially for Prototype PCB Assembly and small-batch production.

What is stencil fabrication in PCB assembly

In SMT Assembly, a stencil is a thin metal sheet (usually stainless steel) used to apply solder paste precisely onto PCB pads before component placement. The stencil is custom-made based on your Gerber data and pad design.

Because each PCB design is unique, a new stencil must be manufactured for each project or design revision.

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Why stencil fabrication is charged

Stencil fabrication is considered a one-time setup cost because it requires materials, laser cutting or etching processes, and engineering preparation.

Even if you only produce a few boards in Prototype PCB Assembly, the stencil still needs to be created. This is why the cost is not included in per-unit pricing but listed separately as an NRE charge in PCB Assembly quotations.

Typical stencil cost

The cost of a stencil depends on several factors such as board size, thickness, and precision requirements.

For standard designs, stencil costs typically range from $50 to $150. For larger boards, fine-pitch components, or special requirements (such as step stencils), the cost can be higher.

In high-volume SMT Assembly, this cost becomes negligible per unit because it is spread across a large quantity.

When stencil cost may be waived

Some manufacturers may waive stencil fees under certain conditions.

For example, if you move from Prototype PCB Assembly to mass production with the same supplier, they may reuse the stencil or absorb the cost into the overall pricing.

In turnkey PCB Assembly projects, some suppliers include stencil cost in the total package price rather than listing it separately.

Promotions or long-term partnerships may also result in free stencil offers.

Can one stencil be reused

Yes, a stencil can often be reused for repeat orders as long as the PCB design remains unchanged.

If there are layout modifications, pad size changes, or component updates, a new stencil will usually be required, resulting in an additional NRE cost.

Proper storage and handling by the manufacturer ensure stencil longevity for future SMT Assembly runs.

Stencil cost vs alternative methods

For very low-volume builds, some manufacturers may use manual solder paste application instead of a stencil. However, this reduces accuracy and consistency.

Using a stencil ensures better solder quality, fewer defects, and higher efficiency, making it the standard choice in professional PCB Assembly and PCB Manufacturing processes.

Conclusion

Stencil fabrication is normally a charged, one-time cost in PCB Assembly, included under NRE fees. It is essential for accurate solder paste application in SMT Assembly and ensures high-quality production.

While the cost may seem significant for Prototype PCB Assembly, it becomes minimal in large-scale production. Working with the same supplier for repeat orders can help you reuse stencils and reduce overall costs.

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