Bulk capacitance for low-voltage rails
The TPSV687K006R0035: Its 35 mOhm ESR keeps ripple heating under control when the cap handles the AC component of a switching regulator output or a digital load's transient demand.
ESR and ripple current — the so-what
At 35 mOhm, this cap's ESR is low enough that self-heating from ripple current stays within the part's dissipation limit for most point-of-load converters. A 680 µF cap with this ESR handles roughly 2.5 A RMS ripple at 100 kHz before the internal temperature rise reaches 10 °C above ambient — a common derating boundary for tantalum capacitors. The ±10% tolerance on 680 µF means the actual capacitance at 25 °C and 0 V bias sits between 612 µF and 748 µF. Under 6.3 V DC bias, the capacitance drops by about 20-30% due to the DC voltage derating effect inherent in tantalum dielectrics, so the effective capacitance at the rail voltage is closer to 475-600 µF.
Sourced per RFQ through independent and authorized distribution. Store the reels in a dry cabinet below 10% RH if the moisture-barrier bag is opened — the molded case is not moisture-sensitive per J-STD-020, but the reel label carries the MSL rating.