ECA2EM101 Electrolytic Capacitor, 100 µF, 250 V, M Series, ± 20%. The Panasonic M series capacitors are automotive grade type A, radial leaded polarized aluminium electrolytic capacitors. The M series parts cover broad range of voltage ratings and capacitance values. These capacitors are perfect solution for applications, which require ultra low ESR, very high ripple current and very long life in small mounting form.