Laser marking is the package-identification process that uses focused laser energy to permanently mark codes, logos, and traceability data on component surfaces - it provides durable product identification through manufacturing and field life.

What Is Laser marking?

• Definition: Non-contact marking method creating visible contrast by ablation, carbonization, or surface modification.
• Marked Content: Typically includes part number, date code, lot code, and origin information.
• Substrate Range: Applied to mold compounds, ceramics, metals, and coated package lids.
• Process Position: Performed near final assembly and test after package cleaning.

Why Laser marking Matters

• Traceability: Permanent marks enable lot tracking and failure analysis linkage.
• Compliance: Many markets require clear product identification and date coding.
• Durability: Laser marks resist wear and solvents better than many printed labels.
• Automation Fit: Supports high-speed inline marking with machine-read verification.
• Brand Protection: Clear marks help reduce misidentification and counterfeit risk.

How It Is Used in Practice

• Parameter Setup: Tune laser power, pulse, and scan speed for target contrast without substrate damage.
• Readability Validation: Use OCR and vision checks to confirm code legibility and placement.
• Data Governance: Link marking data stream to MES for end-to-end traceability integrity.

Laser marking is a standard permanent-identification step in package finalization - marking quality must balance readability, durability, and substrate safety.