The TPSW336M010R0350 is a 33 µF tantalum capacitor rated at 10 V, with a maximum ESR of 350 mOhm. In a typical 3.3 V rail application, the 10 V rating provides over 3× derating margin, keeping the capacitor well within its safe operating voltage even during startup transients. The 350 mOhm ESR is the key parameter for ripple handling — at a 100 kHz switching frequency, this ESR limits the self-heating from ripple current. For a buck converter output, the capacitor's ripple current capability is inversely proportional to ESR; a 350 mOhm part handles moderate ripple without excessive temperature rise.
Molded 2312 case — PCB layout and height constraints
This low profile fits under a 2 mm board-to-board clearance — useful in stacked PCB assemblies or mezzanine card designs where component height is budgeted. The W size code indicates the case dimensions; the pad layout follows the standard 2312 footprint, compatible with reflow soldering profiles typical for tantalum capacitors.
Temperature range and operating environment
Rated for -55°C to 125°C, this capacitor covers the full industrial temperature range and the lower end of automotive under-hood requirements. At 125°C, the voltage derating should follow the manufacturer's curve — typically 2/3 of rated voltage at maximum temperature. The ±20% tolerance is standard for tantalum electrolytics; the actual capacitance at temperature extremes will shift within this band. For timing or filtering circuits where tighter tolerance is needed, consider a ceramic or film alternative.