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Generally the specific model of capacitor used only matters in terms of its engineering specifications (value, tolerance, dielectric, etc.), all of which affect
by Liftyee 1y ago
Generally the specific model of capacitor used only matters in terms of its engineering specifications (value, tolerance, dielectric, etc.), all of which affect its functionality in some measurable way. The specifications chosen for a given purpose are also often predictable - so if a reverse engineer knows this is a power filtering capacitor (for example), they might guess 0.1uF X7R ceramic... and confirm with measurements.
Common "jellybean" passive components like resistors, capacitors, inductors... are designed to be standardized and interchangeable with any other component of the same specifications. The remaining factor might be cost and manufacturer (their quality control), but knowing which makes of capacitor are consistently reliable is hardly trade secret knowledge.
- Kirby64 1y ago> Common "jellybean" passive components like resistors, capacitors, inductors... are designed to be standardized and interchangeable with any other component of the same specifications. The remaining factor might be cost and manufacturer (their quality control), but knowing which makes of capacitor are consistently reliable is hardly trade secret knowledge. Not even close to true for capacitors and inductors. True for resistors mostly, but inductors and capacitors have wildly different specifications depending on their intrinsic parameters. The derating curves (AC, DC, etc) vary wildly depending on the individual part selection. One capacitor may have double or triple the capacitance of another for the same size, nominal rating, and type at a specific voltage condition. Sure you can overbuild and not worry too much, but given the wildly small size of phones don’t be shocked if the individual components selected are very critical.