Capacitance, voltage, and ESR — the three numbers that matter
This TAJY107M006RNJ is a 100 µF tantalum capacitor rated at 6.3 VDC, with a ±20% tolerance and a 900 mOhm ESR. The 900 mOhm ESR is the figure that limits ripple current handling — at 100 kHz, the capacitor's self-heating under ripple is directly proportional to ESR times the square of the ripple current.
Package and footprint — 2917 (7343 Metric)
The case size is 2917 (7343 Metric), measuring 7.30 mm x 4.30 mm with a seated height of 2.00 mm max. The Y case code is a standard low-profile option in the TAJ family — the 2.00 mm height keeps it under many board-level clearance constraints.
The -55°C low end covers cold-soak conditions in avionics and outdoor telecom; the +125°C ceiling allows placement near hot components on a densely populated board.