220 µF, 16 V, 40 mOhm ESR — BOM-fit anchor
The 40 mOhm ESR keeps ripple heating low in output filter and bulk decoupling roles — a 1 A ripple current dissipates only 40 mW, well within the thermal budget of the 2917 package.
A 125°C ceiling means this capacitor holds its capacitance and ESR through engine-bay heat, avionics bay soak, or downhole tool ambient. The molded case resists moisture ingress better than conformal-coated chips in high-humidity storage.
