{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPSY227K004R0040","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TPSY227K004R0040","canonicalUrl":"https://icboms.com/kyocera-avx/TPSY227K004R0040","factsUrl":"https://icboms.com/api/mcp/products/TPSY227K004R0040","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TPS series Molded tantalum capacitor, TPSY227K004R0040, 220 µF, 4 V, ±10%, 40 mOhm ESR, 2917 (7343 Metric) case, -55°C~125°C.","salesMarkdown":"## 40 mOhm ESR — what it means for ripple and heat The TPSY227K004R0040: The 40 mOhm ESR is the key parametric for the thermal budget. At 220 µF and 4 V, this ESR keeps the ripple current capability well above what a general-purpose aluminium electrolytic of similar capacitance would manage. For a DC-DC converter output, the I²R loss in the capacitor directly sets the case temperature rise — lower ESR means the part runs cooler under the same ripple current. The molded package conducts heat to the PCB pads more evenly than a dipped radial, so the board copper area is the real thermal path. ## 2917 case — footprint and rework reality That is a standard large tantalum footprint — the pad layout matches the common 7343-31 pattern. For the rework bench, the molded body is less thermally fragile than a conformal-coated part; the epoxy case can take a hot-air profile at 260 °C peak for a few seconds without cracking. The key is preheating the board to 150 °C before hitting the part with hot air — lift the part, not the pad. Pin 1 is marked by the chamfer on the case, visible under magnification. ## -55 to 125 °C — the full temperature envelope Tantalum capacitors derate their voltage with temperature — at 125 °C the 4 V rating is still valid, but the ripple current limit drops. ## Active production — no last-time-buy pressure For the BOM engineer, this means the part is safe for new designs and does not require a last-time-buy hedge.","metaTitle":"KYOCERA AVX TPSY227K004R0040 Tantalum Cap, 220 µF, 4 V, 2917","metaDescription":"KYOCERA AVX TPS series molded tantalum capacitor, 220 µF ±10%, 4 V rated, 40 mOhm ESR, 2917 case, -55 to 125 °C. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Specialty Capacitors"],"specifications":{"Mfr":"KYOCERA AVX","Type":"Molded","Series":"TPS","Package":"Tape & Reel (TR)","Features":"General Purpose","Tolerance":"±10%","Capacitance":"220 µF","Failure Rate":"-","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"2917 (7343 Metric)","Product Status":"Active","Voltage - Rated":"4 V","lifecycle_stage":"unknown","Lifetime @ Temp.":"-","Size / Dimension":"0.287\\\" L x 0.169\\\" W (7.30mm x 4.30mm)","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-55°C~125°C","Manufacturer Size Code":"Y","ESR (Equivalent Series Resistance)":"40mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8822","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b00017213ae4c6777a643c3e703ff6ae.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPSY227K004R0040/alternatives.json"},"ai":{"faq":[{"question":"What is the ESR of TPSY227K004R0040 and why does it matter?","answer":"The ESR is 40 mOhm. This is the equivalent series resistance at 100 kHz typical for tantalum capacitors. A lower ESR means less self-heating under ripple current, which directly affects the capacitor's lifetime and reliability in power-supply output filtering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TPSY227K004R0040","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TPSY227K004R0040 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}