The TPSE227K010R0050: The 50 mOhm ESR is the headline parameter for this part: it determines the ripple current capability and the voltage ripple under transient load. A 220 µF cap with 50 mOhm ESR at 100 kHz has an impedance of roughly 55 mOhm — the ESR dominates the impedance above the self-resonant frequency, so the capacitor behaves as a resistor for high-frequency switching noise.
Case size, footprint, and temperature range
The -55°C to 125°C operating range covers the full industrial temperature envelope and the extended automotive ambient. Capacitance change with temperature is typically +10% at -55°C and -10% at +125°C relative to the 25°C value — the ±10% tolerance band absorbs this shift without exceeding the application limit.
Sourced to order through independent distribution channels. The molded construction and tape-and-reel packaging (cut tape available) support both prototype and volume assembly.