The TPST476K006R1200: The 1.2 Ohm ESR (equivalent series resistance) governs how much ripple current the part can absorb before self-heating becomes a concern. For a 100 kHz switching regulator output, the ESR sets the output voltage ripple amplitude — lower ESR means less ripple for the same load transient. The TPS series is positioned as a general-purpose low-ESR line, so this cap sits between standard tantalum (higher ESR, lower cost) and the low-ESR specialty series.
Case size and temperature range — board-fit and environment
This is the standard T-case size in the TPS series, compatible with the 3528-12 land pattern used across many tantalum capacitor families. The surface-mount package is supplied on Tape & Reel, which is the expected format for pick-and-place assembly. Rated for -55°C to +125°C operating temperature, this cap covers the full industrial temperature range and reaches into the automotive under-hood ambient band. The molded construction provides mechanical robustness against board flex and vibration — a common failure point for conformally-coated tantalums in high-shock environments.
Active production — sourcing posture for the BOM line
The TPS series is a broad tantalum capacitor family with multiple case sizes and ratings. If the 47 µF / 6.3 V / 1.2 Ohm ESR combination is the exact fit, this order code is the one. No pin-compatible alternative exists within the same series at the same parametric point — the ESR and case size are the distinguishing factors.