22 µF at 20 V – the bulk decoupling sweet spot
The TPSB226K020A0600: 22 µF capacitance at 20 V rated voltage covers the common 12 V and 5 V rails with healthy margin – the 20 V rating leaves headroom for a 12 V rail that might see 14 V during a battery charge cycle. The ±10% tolerance keeps the actual capacitance tight enough for most filtering and hold-up applications – you won't lose half your margin to a wide-tolerance part.
ESR tells you the ripple story
600 mOhm ESR at 25°C means the capacitor self-heats about 0.6°C per 100 mA of ripple current – in a 1 A ripple application you need to check the thermal rise against the 125°C limit, especially in a tight enclosure.
Molded case, 1411 footprint – board-fit facts
The molded case is the standard low-profile tantalum form factor – no conformal coating issues, no lead-bending, just a straight reflow onto the 1411 (3528 Metric) pad.