{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EEF-CX0E221R","brand":"Panasonic Electronic Components","brandSlug":"panasonic-electronic-components","productSlug":"EEF-CX0E221R","canonicalUrl":"https://icboms.com/panasonic-electronic-components/EEF-CX0E221R","factsUrl":"https://icboms.com/api/mcp/products/EEF-CX0E221R","rawCanonicalId":null},"summary":{"shortDescription":"Panasonic Electronic Components, SP-Cap CX, Polymer Capacitor, EEF-CX0E221R, 220 µF, ±20%, 2.5 V, 15 mΩ ESR, 2917 (7343 Metric) SMD.","salesMarkdown":"## Polymer bulk — 220 µF at 2.5 V in the 2917 SMT footprint The EEF-CX0E221R is a Panasonic SP-Cap CX polymer capacitor in the 2917 (7343 metric) surface-mount package, rated 220 µF at 2.5 V with ±20% tolerance. The polymer electrolyte gives it a significantly lower ESR than a comparable electrolytic — 15 mΩ typ — which is the key selection driver for decoupling and bulk-rail applications where ripple current handling matters more than raw capacitance density. ## ESR and ripple — the polymer advantage at 100 kHz 15 mΩ ESR with 5.1 A ripple current capability at 100 kHz means this part handles the high-frequency switching transients in point-of-load converters without the thermal runaway risk a higher-ESR part carries at equivalent RMS current. The polymer electrolyte does not dry out the way an electrolytic's liquid electrolyte does, which is why the 2000-hour lifetime rating at 105 °C is a realistic field figure, not an extrapolated number. ## Temperature grade and board footprint The -55 °C to 105 °C operating window covers the full industrial temperature band — this is the rating to check against an enclosed DC-DC module where ambient at the cap can hit 85 °C+ during load transients. ## Sourcing posture — active, single-source, quoted to order Panasonic's SP-Cap CX family is a long-run product line, but the 2.5 V rating is specific to this voltage bin — a different rated voltage in the same 2917 package is not automatically a drop-in at the BOM line without confirming the voltage headroom in your rail. Sourced to order through independent distribution with availability and pricing confirmed at RFQ.","metaTitle":"EEF-CX0E221R Panasonic 220µF 2.5V Polymer SP-Cap CX","metaDescription":"Panasonic SP-Cap CX polymer capacitor, 220µF 6.3V 15mΩ ESR 5.1A ripple. 2917 SMD, -55 to 105°C, 2000hr @ 105°C. Active. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Specialty Capacitors"],"specifications":{"Mfr":"Panasonic Electronic Components","Type":"Polymer","Series":"SP-Cap CX","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Tolerance":"±20%","Capacitance":"220 µF","Applications":"General Purpose","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"2917 (7343 Metric)","Product Status":"Active","Voltage - Rated":"2.5 V","lifecycle_stage":"unknown","Lifetime @ Temp.":"2000 Hrs @ 105°C","Size / Dimension":"0.287\\\" L x 0.169\\\" W (7.30mm x 4.30mm)","Base Product Number":"EEF-CX","Height - Seated (Max)":"0.075\\\" (1.90mm)","Operating Temperature":"-55°C~105°C","Surface Mount Land Size":"0.287\\\" L x 0.169\\\" W (7.30mm x 4.30mm)","Ripple Current @ High Frequency":"5.1 A @ 100 kHz","ESR (Equivalent Series Resistance)":"15mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/af240a72bd0a92d91668c5a8a401367a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the EEF-CX0E221R's listed type?","answer":"The listed type is Polymer. Panasonic's SP-Cap CX series uses a conductive polymer electrolyte, which is the key differentiator from ceramic or electrolytic capacitors in the same capacitance and voltage range — the lower ESR and higher ripple current rating are direct consequences of the polymer construction."},{"question":"Where can I buy EEF-CX0E221R and how do I get a price?","answer":"The part is sourced to order through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/panasonic-electronic-components/EEF-CX0E221R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/panasonic-electronic-components/EEF-CX0E221R 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}}