Reading RDC: Why DC Resistance Decides Your Inductor Choice
At 10 nH in a 1608(0603) case, Walsin’s RDC spans 0.048-0.30 ohm across 15 real parts. Here is why inductance alone never picks the right inductor.
October 4, 2026
At 10 nH in a 1608(0603) case, Walsin’s RDC spans 0.048-0.30 ohm across 15 real parts. Here is why inductance alone never picks the right inductor.
Walsin’s WCI multilayer chip inductor spans 720 real parts, six case sizes and 1.0-15,000 nH. Q min peaks mid-range and falls at both ends. Data inside.
WLCW (791 parts) and WQCW (569 parts) share all six case sizes, but WLCW reaches 3.8-4.7x higher inductance at two sizes. Full comparison with real parts.
Walsin lists 47 distinct inductor series across 5,410 real parts. 21 series hold fewer than 20 parts each. Full series table, sizes and counts inside.
0603 100pF NP0 50V resolves to six Walsin part numbers in six series. Five selection fields are identical. Only the length tolerance separates two of them.
43.9% of Walsin’s 234,815 chip resistor rows are automotive. The marker is not in the part number or any column — only in the series name text.
Walsin’s high precision thick film group holds 52,027 parts and its thin film precision series 58,314. They divide at tolerance, not at precision.
A 0 ohm resistor jumper is rated in amps, not watts. Walsin’s export gives rated power on all 126 jumper rows and rated current on none.
Sub-GHz antenna selection at 433, 868 and 915 MHz, plus GNSS, NFC and wireless power. 38 real Walsin antenna parts sorted by band, family and interface.
A Walsin MLCC stock list read properly: case size by series, the 18 that means three different sizes, and 47 codes with more than one thickness.