In modern electronics manufacturing, traceability has become essential for quality control, reliability, and anti-counterfeiting. One of the most effective ways to achieve this is by marking QR codes on PCB boards, which store key production and tracking information.
This article explains what PCB QR codes are, how they are made, and why laser marking PCB has become the global standard. It also introduces the LansuLaser PCB Laser Marking Machine, its specifications, compatible PCB types, and advantages.
A PCB QR code is a small two-dimensional barcode marked directly onto a printed circuit board. It is used to store manufacturing and traceability data such as:
- Serial numbers
- Batch information
- Production dates
- Quality inspection records
- Supplier data
- Full lifecycle tracking
Scanning the QR code allows fast access to detailed product information.
How Is a QR Code Created on PCB Boards?
There are several methods for marking onto PCBs, but the most advanced and widely adopted method is laser marking QR code on PCB board.
Why Use Laser Marking PCB Technology?
Laser marking offers unique advantages:
- Non-contact processing
- Ultra-high precision (QR codes as small as 3×3 mm)
- Clear and high contrast
- Permanent and resistant to heat, chemicals, and cleaning
- No consumables required
- Fast for mass production
- No damage to copper layers
Laser marking modifies the PCB’s solder mask, creating a high-contrast QR code without affecting circuit performance.
Which Laser Types Are Used?
- UV Laser 355 nm — best for green, blue, and black solder mask PCBs
- CO₂ Laser — suitable for organic PCB materials
- Fiber Laser — used for metal-based PCBs
Among these, UV laser marking delivers the highest resolution and is widely used in electronics factories worldwide.
LansuLaser PCB Laser Marking Machine
LansuLaser provides high-precision, high-speed solutions tailored for SMT production lines and mass electronics manufacturing.
Key Features
- CCD Vision Positioning
Automatically identifies board positions and compensates alignment for perfect QR codes. - High-Resolution UV Laser
Ideal for ultra-small QR code marking on various PCB solder masks. - Inline and Offline Models
Compatible with conveyors, loaders, unloaders, and connection tables. - Permanent Marking
The code remains readable after high-temperature reflow, cleaning, and soldering. - MES Compatibility
Supports data uploading, verification, and traceability management.
Technical Specifications
| Item | Specification |
|---|---|
| Laser Type | UV Laser 355 nm |
| Laser Power | 3W / 5W / 10W |
| Marking Area | 110×110 mm / 150×150 mm |
| Marking Speed | ≤7000 mm/s |
| Minimum QR Code | 3×3 mm |
| Cooling System | Industrial water chiller |
| Positioning | CCD vision automatic identification |
| Connectivity | MES / SMEMA |
| Working Mode | Offline / Inline automatic |
Compatible PCB Types
The LansuLaser PCB laser marker can mark QR codes on:
- FR4 PCB
- Green solder mask PCB
- Blue solder mask PCB
- Black solder mask PCB
- Aluminum PCB / Metal Core PCB
- FPC Flexible Circuit Boards
- Ceramic PCB
- Thin multilayer boards
This makes it suitable for mobile phone PCBs, automotive electronics, smart home devices, power modules, industrial controls, and more.
Advantages of LansuLaser Laser Marking PCB Solutions
1. Ultra-High Precision
Perfect for tiny QR codes, barcodes, and micro-text.
2. No Consumables
No ink, no labels — reduce long-term cost.
3. Zero Damage
UV laser marking is gentle and safe for circuit boards.
4. High-Speed Production
Supports 24/7 factory operation.
5. Full SMT Line Integration
Compatible with loaders, conveyors, MES traceability, etc.
6. Long-Lasting Marking Quality
Readable even after soldering and chemical cleaning.
Why Choose LansuLaser?
- Over 10 years of industry experience
- Installed in 65+ countries worldwide
- Complete system: laser + CCD + automation
- Custom marking solutions available
- Fast response technical support
LansuLaser is a trusted partner for electronics manufacturing and production automation.
Contact LansuLaser
Ready to upgrade your PCB production with laser marking PCB technology?
📞 WhatsApp: +86 18925707676
✉ Email: info@lansulaser.com
🌐 Website: https://lansulaser.com
LansuLaser — High-precision laser marking solutions for global electronics factories.
