Electronic component, method for manufacturing electronic component, and traceability system

A traceability system comprising:

• a code reader that reads a code of an electronic component;
• a database storing component treatment information specifying a treatment method after use of the electronic component for each product type of the electronic component;
• and
• an information processing apparatus that collates the product type of the electronic component read by the code reader with the component treatment information in the database to determine a treatment method after use of the electronic component, wherein
• the electronic component includes an element body and an external electrode provided on the element body,
• metal particles having a particle radius of 10 nm or more and 1000 nm or less are disposed on the element body so as to form the code, or recess having a radius of 10 nm or more and 1000 nm or less in plan view are disposed on the element body so as to form the code, and
• wherein information indicated by the code includes information indicating a product type of the electronic component.