68 µF, 16 V molded tantalum — footprint and ESR for bulk decoupling
The TPSY686K016R0200: The 200 mOhm ESR at 100 kHz is the figure that governs ripple current handling and output-voltage ripple in a DC-DC converter bulk-cap position — a 200 mOhm ESR at 16 V rated means the capacitor can absorb the ripple current of a moderate-load buck converter without exceeding its internal temperature rise. The ±10% tolerance is the standard grade for this series — the actual capacitance at the 16 V DC bias stays within the band, so the output filter corner frequency is predictable without over-specifying the inductor.
Temperature range and deployment context
At 85°C the voltage derating is typically 50% for tantalum MnO₂ — a 16 V part should be run at 8 V or less for best reliability in a 85°C continuous environment. The molded case construction gives no conformal-coat compatibility issues; the package body is compatible with standard reflow profiles (MSL 3 typical for this series).