680 µF, 6.3 V, 100 mOhm ESR — TPS series molded tantalum
The TPSE687K006R0100: Its 100 mOhm ESR at 100 kHz keeps ripple heating manageable in power-supply decoupling and hold-up capacitor roles — the low impedance helps maintain rail stability during transient loads.
Temperature range and board-fit considerations
Rated for -55°C to 125°C operation, this capacitor suits industrial and automotive-adjacent environments where the board sees wide thermal cycling — the molded case resists moisture ingress better than conformal-coated chips. Surface-mount 2917 footprint with a standard reflow profile; the molded epoxy body handles MSL 3 typical for tantalum chips, so a bake is needed if the reel has been exposed beyond the floor-life limit.