Purchased component
Passive Components (chip resistors, MLCC)
✓ Expert reviewed All content on this page has been reviewed by a senior motor engineer.
Process flow
Upstream manufacturing of this bought-in item is not covered yet; see the incoming inspection and approval tests.
Incoming inspection & approval tests
- Authenticity and traceabilityOriginal packaging, date code and certificate of conformity from an authorised source
- SolderabilityJ-STD-002
- Electrical values (sampling)Per data sheet; LCR meter / multimeter
- Moisture sensitivity handlingJ-STD-033 for moisture-sensitive parts
Buyer FAQ
- What matters when choosing MLCCs for a motor driver?
- Use X7R or X7S dielectrics for decoupling, derate voltage (capacitance drops with DC bias), and choose larger case sizes or soft-termination parts where the board flexes or sees vibration.
- Are domestic brands acceptable?
- Yes for most general positions; major Chinese makers supply consumer and industrial customers. Qualify each part number and keep second sources, especially for capacitors that have had long lead times.
- How do I avoid counterfeit components?
- Buy from the maker or its authorised distributors, keep date-code traceability, and inspect reels on arrival. Avoid the spot market for production lots.