Moisture Sensitivity Level Receiving Audit and Dry Bake Containment
Receiving verification of moisture barrier packaging and strict floor life tracking prevent reflow delamination yield losses in surface mount assembly.
Receiving Inspection Protocol
Quality Assessment
Initial checks on incoming shipments of electronic components are necessary to verify that parts have not been damaged or exposed to moisture during transit. This formal validation procedure is the receiving inspection protocol, which includes checking the condition of moisture-barrier bags and moisture indicator cards. It ensures that only compliant parts are accepted into the warehouse.
This step prevents the use of compromised parts in subsequent assembly lines. Unpacking must be conducted in controlled environments to prevent exposure to high ambient humidity before the parts can be processed.
Verification Action
Inspectors examine each box for physical damage, broken seals, and expired shelf life dates. If the vacuum in a moisture-barrier bag is lost, the bag will feel loose instead of tight. The moisture indicator card is checked immediately after opening to verify that internal humidity has remained low.
These quick checks prevent moisture-damaged components from entering storage cabinets.
Record Keeping
All findings are logged in the quality management database to track supplier performance and component traceability. The record includes the batch number, date code, and the moisture sensitivity level of the received components. This documentation is essential for tracking down the source of any issues that appear during assembly.
It provides a complete history for every received lot.
Non Conformance
If any shipment fails to meet the inspection criteria, the parts are quarantined to prevent them from being used. The quarantine area is isolated from the main storage to avoid accidental release. Affected batches are flagged in the warehouse management system.
This process ensures that only verified material is released to the production floor.