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What is an SMT Stencil?

SMT stencil, also called PCB stencil, is a precision stainless-steel stencil used in PCB assembly. It features laser-cut apertures aligned with PCB pads to ensure accurate and consistent solder paste deposition, minimizing defects such as bridging or misalignment and enabling reliable, high-quality PCB assembly.

jlcpcb overview

JLCPCB Stencil Overview

JLCPCB stencil service is the earliest and most mature manufacturing lines developed after our PCB prototyping service, trusted by millions of engineers worldwide. To ensure consistent and accurate SMT printing, we continuously invest in advanced manufacturing equipment, including over 30 high-precision laser cutting machines, and use 304 HTA stainless steel with tolerances as tight as ±0.003mm.

We specialize in precision laser-cut stencil technology, supporting both solder paste and adhesive (red glue) applications for high-quality PCB assembly. JLCPCB offers a wide range of circuit board stencil customization options, such as framed and frameless stencils, step stencils, nano-coating, electropolishing and ultrasonic-resistant adhesive. These enhancements improve solder paste release, increase first-pass SMT yield and optimize printing performance for mixed-technology and high-density PCBs.

Types of JLCPCB Stencils

Surface mount stencil can be categorized by stencil frame and manufacturing process.

Classification by Stencil Frame

This category focuses on whether the stencil has a frame or how it is supported.

Non-Framework (Frameless Stencil)

• Standalone stainless-steel sheet without a frame

• More flexible and space-saving

• Ideal for small batches or manual assembly

stencil page frameless stencil
Framework (Framed Stencil)

• The stencil is fixed in an aluminum or steel frame

• Easy to handle and position accurately

• Suitable for automated pick-and-place machines

stencil page framed stencil

Classification by Process & Surface Finish

Nano Coating
nano coating
Faster solder paste release, more uniform paste deposits, less cleaning—ideal for BGA, QFN and other fine-pitch components.
Learn more about nano-coated stencil >
Electropolishing
stencil page electropolishing
Removes micro burrs, smooths aperture walls, and enhances solder paste release, a perfect match with nano-coating.
Step Stencil
stencil page step stencil
Step stencil features varying thicknesses across the stencil, allowing precise solder paste deposition for fine-pitch and high-density components.
Ultrasonic-Res. Adhesive
stencil page ultrasonic resistant adhesive
Ensures framed stencil stability during printing and prevents vibration or shifting—strong bond, heat resistance, corrosion resistance.

JLCPCB Stencil Manufacturing Capabilities

How to Order PCB Stencil in 3 Options at JLCPCB?

order stencil option one

Why Choose Surface Mount Stencil from JLCPCB?

Excellent Print Quality

Manufactured using 30+ high-precision laser cutting machines, the stencils feature clean, burr-free apertures with consistent quality. Made from 304 HTA stainless steel with tolerances as tight as ±0.003mm for accurate solder paste deposition and offers optional nano-coating and electropolishing to improve paste release, reduce bridging, and increase first-pass SMT yield.

Competitive Pricing & Fast Turnaround

Precise laser-cut stencil starts at just $3 (100 × 100mm) . Premium nano-coating and electropolishing are available at highly competitive, industry-leading prices.

Fully automated laser cutting ensures production in as fast as 12 hours. Most stencil orders are shipped within 24 hours of confirmation.

Full Custom Support

Available in framed and frameless stencils, supporting extensive customization—including size, outline, thickness, panelized designs, and splitting large frameless stencils into multiple pieces—plus advanced process options such as nano-coating, electropolishing, step stencils, and ultrasonic-resistant adhesive to meet diverse PCB assembly requirements.

Frequently Asked Questions About PCB Stencil

1. Can I order my first SMT stencil for free?

Yes. If you’re a new user and order an SMT stencil (size≤ 380 × 280 mm), your new-user stencil coupon will fully cover the stencil cost. You’ll only need to pay the shipping cost and a $1 customs-required charge.

2. If I order PCBs together with an SMT stencil, will they be shipped together?

3. I forgot to order an SMT stencil when placing my PCB order. What should I do?

4. Can I customize my PCB stencil size or outline?

5. I have multiple different PCBs. Can I place them on one stencil?

6. Which kind of PCB stencil technology is highly recommended at JLCPCB?

What Customers Say About JLCPCB Circuit Board Stencil?

97****6A
97****6A May 9, 2026
Sanding
Great combo stencil. Works with no problem
12*****7A
Electropolishing
12*****7A May 8, 2026
Electropolishing
The stencil for my PCB with the CM6631A chip was made very well — even better than I expected. The electropolishing process makes the solder paste release smoothly and prevents it from sticking to the stencil surface. I am very satisfied with the quality and can definitely recommend this service.
47****9A
47****9A May 4, 2026
Sanding
いつものようにきれいに仕上がっており、非常に満足です。
11*****3A
11*****3A May 2, 2026
Sanding
The stencil was very precise and fit onto the circuit board without any problems.

Related Services for PCB Stencil Workflow

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