33 µF at 2.5 V — bulk decoupling on a low-voltage rail
The TAJS336M002RNJ: That capacitance and voltage combination fits bulk decoupling on a 1.8 V or 1.2 V core supply rail, or energy storage for a low-power hold-up circuit. The 1.5 Ohm ESR is the figure that governs ripple current handling and self-heating — a 33 µF tantalum at this ESR can handle a few hundred mA of ripple before internal temperature rise becomes a concern. For a 1.8 V rail drawing 200 mA peak, the ripple voltage at 100 kHz is roughly 30 mV, well within typical noise budgets.
1206 case and temperature range
The molded body has clear polarity marking; pin 1 is the anode end, identifiable by the bevel or stripe on the top face. Operating from -55°C to 125°C, this capacitor covers the full industrial temperature envelope and the under-hood automotive ambient range. No derating is required at 85°C; at 125°C the rated voltage should be derated to 67% per standard tantalum practice, so the effective working voltage at the top end is about 1.67 V.
Active lifecycle and sourcing
The TAJ series is a widely second-sourced family — pin-compatible equivalents exist from Kemet (T491 series) and Vishay (293D series) in the same 1206 case and 33 µF / 2.5 V rating. Cross-reference data is maintained for replacement sourcing.