{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TAJS156K004RNJ","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TAJS156K004RNJ","canonicalUrl":"https://icboms.com/kyocera-avx/TAJS156K004RNJ","factsUrl":"https://icboms.com/api/mcp/products/TAJS156K004RNJ","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TAJ series, Molded tantalum capacitor, 15 µF ±10%, 4 V rated, 1206 (3216 Metric) case, 4 Ω ESR, -55°C to +125°C","salesMarkdown":"## 15 µF, 4 V, 4 Ω — what these ratings mean on your BOM The 15 µF capacitance at 4 V rated voltage with ±10% tolerance puts it in the bulk-decoupling class for low-voltage rails — think 3.3 V or 1.8 V supply bypassing where a ceramic cap's DC-bias derating would eat half the effective capacitance. The 4 Ω ESR (equivalent series resistance) is the spec that matters for ripple current and transient response. At 15 µF, a 4 Ω ESR means the self-heating under ripple is higher than a low-ESR tantalum — budget the ripple current per the datasheet's power-dissipation limit, not just the capacitance. For a 4 V rail pulling 100 mA peaks, this cap handles the transient without issue; above 500 mA ripple, consider a lower-ESR part. TAJS156K004RNJ carries an active product status from KYOCERA AVX. It is a current-production part in the TAJ series, available through independent distribution channels. The molded construction and 1206 case keep it usable in outdoor telecom, engine-bay electronics, and downhole tools where the ambient exceeds 85°C. Derate the voltage above 85°C per the TAJ series application note — at 125°C the rated voltage drops to 2/3 of the 4 V mark.","metaTitle":"TAJS156K004RNJ KYOCERA AVX Molded Tantalum 15 µF 4 V ±10%","metaDescription":"TAJS156K004RNJ active KYOCERA AVX TAJ series molded tantalum capacitor, 15 µF, 4 V, ±10%, 1206 case, 4 Ω ESR. 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":"TAJ","Package":"Tape & Reel (TR)","Features":"General Purpose","Tolerance":"±10%","Capacitance":"15 µF","Failure Rate":"-","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Active","Voltage - Rated":"4 V","lifecycle_stage":"unknown","Lifetime @ Temp.":"-","Size / Dimension":"0.126\\\" L x 0.063\\\" W (3.20mm x 1.60mm)","Height - Seated (Max)":"0.047\\\" (1.20mm)","Operating Temperature":"-55°C~125°C","Manufacturer Size Code":"S","ESR (Equivalent Series Resistance)":"4Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ce09bb895bbc5407352e9a690f57411c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the footprint of TAJS156K004RNJ?","answer":"Standard 1206 (3216 Metric) case: 3.20 mm x 1.60 mm, seated height 1.20 mm max. Manufacturer size code S."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TAJS156K004RNJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TAJS156K004RNJ 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}}