Lot Code
Definition
A lot code, also called a batch code, is a marking that identifies the specific production run a component came from. It ties a part to a defined manufacturing batch, which is the basis for traceability.
Why it matters
Lot codes make quality control and recalls possible: if a defect affects one batch, the lot code identifies exactly which parts are involved. In sourcing, lot codes are part of the traceability package buyers request from independent distributors, alongside date codes and chain-of-custody records, to guard against counterfeit and mixed inventory. Standards like AS9120 require this kind of lot-level control.
Related terms
- Date Code: the companion marking for manufacture date.
- AS9120: the distributor standard that mandates lot traceability.
3E Technology connects you directly to suppliers so you can request lot-code and traceability documentation.
Frequently Asked Questions
What is a lot code?+
A lot code, or batch code, identifies the specific production run a component came from. It lets a part be traced back to a defined batch, which matters for quality control, recalls, and verifying authenticity in the secondary market.
Why do buyers ask for lot codes?+
Lot codes enable traceability. If a quality issue or recall affects one batch, the lot code identifies which parts are involved. When sourcing through independent channels, requesting lot codes alongside date codes and chain-of-custody records is part of vetting against counterfeits.
Related Resources
Date Code
A date code marks when a component was manufactured. Here's how date codes support traceability, shelf-life checks, and counterfeit detection.
Counterfeit Electronic Component
A counterfeit electronic component is a part misrepresented as to its origin or authenticity. Here's how counterfeits enter the supply chain and how to avoid them.
AS9120
AS9120 is the quality management standard for distributors of aerospace parts, adding traceability and counterfeit controls to ISO 9001. Here's what it covers.
How to Source Obsolete Electronic Components: A Practical Guide
When authorized distributors run dry on an EOL part, here's the workflow for finding inventory, vetting suppliers, and avoiding counterfeits.
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