{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TAJB155K025RNJ","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TAJB155K025RNJ","canonicalUrl":"https://icboms.com/kyocera-avx/TAJB155K025RNJ","factsUrl":"https://icboms.com/api/mcp/products/TAJB155K025RNJ","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TAJ series, Molded tantalum capacitor, 1.5 µF ±10%, 25 V rated, 5 Ohm ESR, -55°C to 125°C, surface mount 1411 (3528 Metric) B case code","salesMarkdown":"TAJB155K025RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated 1.5 µF at 25 V with ±10% tolerance and 5 Ohm ESR. The molded construction gives it a stable mechanical profile for automated pick-and-place assembly on a standard 1411 (3528 Metric) footprint. ## ESR and temperature — what the 5 Ohm spec means for your board The 5 Ohm ESR at 25 V and 1.5 µF sets the ripple current capability — for a typical buck converter output filter, the self-heating from ripple current through this ESR must stay within the 125°C ceiling. At 100 kHz, the ESR dominates the impedance, so the capacitor's filtering effectiveness is limited above a few hundred milliamps of ripple. The B case code (3.50 mm x 2.80 mm x 2.10 mm) fits the standard 1210 footprint — the 0.083 inch seated height clears most low-profile enclosures. The molded body is not hermetically sealed, so conformal coating is recommended in condensing or washdown environments.","metaTitle":"TAJB155K025RNJ KYOCERA AVX Molded Tantalum Capacitor 1.5 µF","metaDescription":"TAJB155K025RNJ KYOCERA AVX TAJ series molded tantalum capacitor, 1.5 µF, 25 V, ±10% tolerance, 5 Ohm ESR, -55°C to 125°C.","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); Cut Tape (CT)","Features":"General Purpose","Tolerance":"±10%","Capacitance":"1.5 µF","Failure Rate":"-","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"1411 (3528 Metric), 1210","Product Status":"Active","Voltage - Rated":"25 V","lifecycle_stage":"unknown","Lifetime @ Temp.":"-","Size / Dimension":"0.138\\\" L x 0.110\\\" W (3.50mm x 2.80mm)","Height - Seated (Max)":"0.083\\\" (2.10mm)","Operating Temperature":"-55°C~125°C","Manufacturer Size Code":"B","ESR (Equivalent Series Resistance)":"5Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ce09bb895bbc5407352e9a690f57411c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TAJB155K025RNJ/alternatives.json"},"ai":{"faq":[{"question":"Can I replace TAJB155K025RNJ with a different brand capacitor?","answer":"Yes, functionally equivalent molded tantalum capacitors from Kemet or Vishay with the same case code (B), voltage (25 V), capacitance (1.5 µF), and tolerance (±10%) are potential drop-in replacements. However, the ESR and ripple current ratings differ between manufacturers, so verify the application's derating requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TAJB155K025RNJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TAJB155K025RNJ 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}}