Sizing the bulk decoupling cap for a 16 V rail
The TPSC686K016R0200: 68 µF at 16 V with 200 mOhm ESR — this is a standard bulk decoupling value for a 16 V input rail. The 200 mOhm ESR keeps ripple voltage under control at moderate switching frequencies. Molded case, 2312 footprint (6.00 mm x 3.20 mm), seated height 2.80 mm max. The C case code matches the standard tantalum outline — no surprises for the pick-and-place reel.
The cap can sit on an outdoor base-station PCB that sees -40 °C startup and still deliver the full 68 µF within tolerance. The molded epoxy case handles humidity better than a dipped tantalum; no conformal coat required for most indoor or sheltered outdoor use.