A supplier offers the exact chip you need, but the original moisture barrier bag has been opened. Can the material still be used? The answer requires more than a photograph of a resealed bag.
Understand What Moisture Sensitivity Means
For moisture-sensitive components, handling before soldering matters. Manufacturer guidance links the permitted exposure period before reflow to the component’s moisture sensitivity classification and specified environmental conditions. Check the guidance for the actual device and package.
Ask for the Handling History
Before accepting opened material, ask when the original packaging was opened, what exposure records exist and how the components were stored afterward. Also clarify whether the material was divided into smaller quantities or repackaged. If the handling history is unknown, record that uncertainty rather than treating the material as equivalent to unopened stock.
A Resealed Bag Is Not a Complete Record
A new seal shows that a bag has been closed. It does not independently establish the component’s earlier exposure history or readiness for assembly. Ask your manufacturing or quality team what evidence and handling controls the project requires.
Do Not Prescribe a Generic Baking Procedure
Baking conditions should not be guessed from a general internet recommendation. The device, packaging materials and applicable manufacturer instructions need review. If treatment is claimed, ask for the applicable procedure and records for quality review.
Before ordering, agree on packaging condition, available records and acceptance requirements. A clear agreement helps prevent material from arriving on time but being held at receiving. Provide your complete part number, quantity and arrival requirement, and state whether opened or partial packs are acceptable.
Source: TI Semiconductor Packing Methodology: https://www.ti.com/lit/pdf/szza021
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