The production and manufacturing process of surface mount resistors typically involves the following steps:

1. Substrate Preparation: The substrate material, usually ceramic or fiberglass, is prepared and cut into appropriate sizes.

2. Deposition: A thin film of resistive material, such as carbon or metal alloy, is deposited onto the substrate using techniques like sputtering or vapor deposition.

3. Photolithography: A photoresist layer is applied onto the deposited film and exposed to UV light through a photomask, enabling the creation of a pattern on the resistive material.

4. Etching: The exposed resistive material is chemically etched away, leaving behind the desired resistive pattern.

5. Passivation: A passivation layer is applied to protect the resistive pattern from environmental factors like moisture or contamination.

6. Termination: Metal contacts or terminals are added to the resistive pattern, allowing for connection to the circuit board.

7. Testing: The surface mount resistors undergo rigorous testing to ensure their electrical performance meets the required specifications.

8. Packaging: The resistors are packaged in reels, tubes, or trays, ready for transportation and use in electronic assembly processes.

9. Quality Control: Random samples from the production batch are inspected for quality assurance, verifying resistance values, tolerance, and adherence to industry standards.

10. Distribution: The finished surface mount resistors are distributed to manufacturers or distributors for integration into various electronic devices.

Please note that this is a general overview of the manufacturing process for surface mount resistors; specific details may vary depending on the manufacturer and resistor type.