{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TAJY157K004RNJ","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TAJY157K004RNJ","canonicalUrl":"https://icboms.com/kyocera-avx/TAJY157K004RNJ","factsUrl":"https://icboms.com/api/mcp/products/TAJY157K004RNJ","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TAJ series, molded tantalum capacitor, 150 µF ±10%, 4 V rated, 2917 (7343 Metric) package, 400 mOhm ESR, -55°C to 125°C.","salesMarkdown":"## What this TAJ tantalum is and where it sits on the board The TAJY157K004RNJ: This is a molded tantalum capacitor from the TAJ series, 150 µF at 4 V with ±10% tolerance, in the standard 2917 (7343 Metric) case size — the same footprint as the industry-wide D-size tantalum chip. The 400 mOhm ESR is moderate for this capacitance and voltage — it handles ripple current in a bulk decoupling role without excessive self-heating, but it is not a low-ESR part for high-frequency switching supplies. ## Derating and reliability — the 4 V rating in practice Tantalum capacitors are sensitive to voltage derating: a 4 V rated part should be applied on a rail no higher than 2.5 V to 3 V to avoid field failures from surge current or reverse bias. The Y case code (7.30 mm x 4.30 mm x 2.00 mm) is the standard D-size footprint — it fits the same land pattern as the AVX TAJ D case and the Kemet T491 D case, so a BOM swap is straightforward.","metaTitle":"TAJY157K004RNJ KYOCERA AVX TAJ Series 150 µF Molded","metaDescription":"TAJY157K004RNJ from KYOCERA AVX: 150 µF, 4 V, ±10% tolerance, 2917 (7343 Metric) package, 400 mOhm ESR, -55°C to 125°C. Active production.","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":"150 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)":"400mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7441","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ce09bb895bbc5407352e9a690f57411c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to TAJY157K004RNJ?","answer":"Any 150 µF, 4 V, ±10% tantalum in the 2917 (7343 Metric) D case with the same ESR range will drop in — for example, the Kemet T491D157K004AT or the Vishay 293D157X0004D2TE3. Confirm the ESR and temperature rating match your derating budget before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TAJY157K004RNJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TAJY157K004RNJ 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}}