- Use a Standard/Modified Catalog Part When: Your thermal, space, and mounting requirements are common. It is far more cost-effective due to existing tooling (extrusion dies). Lead times are short (weeks). Your volumes are low to medium.
- Consider a Custom Design When: Your thermal or spatial constraints are unique. You need to cool multiple components on one sink. Integration with other mechanical parts (e.g., as part of the chassis) is required. Your annual volume is high enough to justify the Non-Recurring Engineering (NRE) and tooling costs (e.g., for a custom extrusion die, stamping tool, or casting mold). You need a specific aesthetic or branding. The performance of standard parts is insufficient even with modifications.