22 µF, 35 V, 300 mOhm ESR — TPS series molded tantalum
The TPSE226M035R0300: The ±20% tolerance is standard for tantalum electrolytics and covers the capacitance drift over temperature and aging. The 300 mOhm ESR is the key figure for power-supply decoupling and filtering — it sets the ripple current capability and the self-heating under AC load.
Temperature range and board-fit
The 125°C upper limit means it survives under-hood or near-engine-bay heat without voltage derating, as long as the applied voltage stays at or below 35 V. Surface-mount, tape-and-reel packaging — it reflows on a standard lead-free profile with a 260°C peak. The molded body is polarised; the anode band marks the positive terminal, and the flat side of the case indicates the cathode. No special orientation beyond the polarity mark, so it is a straightforward pick-and-place part.
Active lifecycle — sourcing posture
The TPS series is a standard molded tantalum line, so second-source equivalents from Kemet, Vishay, or Panasonic exist in the same 2917 case with similar ratings, though pin-compatibility depends on the specific capacitance/voltage/ESR combination. For a BOM line, this part is a single-source risk only if the ESR or voltage rating is unique; otherwise a parametric cross is straightforward. Availability and current pricing confirmed at RFQ time; no stock-holding claim from this storefront.