680 µF bulk decoupling for low-voltage rails
The TPSD687M004R0100: The molded case provides mechanical stability against vibration, and the polymer cathode delivers lower ESR than standard MnO2 tantalum, which reduces the thermal stress on the capacitor under ripple load.
Active lifecycle — sourcing posture
No pin-compatible alternative is listed as an official second-source, but the TPS series spans multiple case sizes and capacitance values for BOM flexibility.