humidity indicator card

**Humidity indicator card** is the **visual indicator device placed in dry packs to show internal relative humidity exposure** - it provides quick verification of moisture-control integrity before assembly use. **What Is Humidity indicator card?** - **Definition**: Card spots change color when humidity exceeds specified threshold levels. - **Purpose**: Confirms whether dry-pack conditions remained within acceptable limits. - **Placement**: Inserted with components and desiccant inside the moisture barrier bag. - **Interpretation**: Reading requires comparison with reference colors at package-open time. **Why Humidity indicator card Matters** - **Decision Support**: Guides whether parts can proceed to line or require bake recovery. - **Traceability**: Provides objective evidence of storage condition at point of use. - **Risk Screening**: Detects barrier-seal failures that could otherwise go unnoticed. - **Compliance**: Common requirement in standardized dry-pack procedures. - **Human Factor**: Incorrect interpretation can lead to wrong handling decisions. **How It Is Used in Practice** - **Reading Procedure**: Train operators on timing and lighting conditions for consistent interpretation. - **Recordkeeping**: Log HIC status at receiving and line issue checkpoints. - **Escalation Rules**: Define clear criteria for hold, bake, or return based on indicator states. Humidity indicator card is **an essential visual control for moisture-safe component handling** - humidity indicator card value depends on standardized interpretation and action protocols.