laser marking

**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.