{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TAJS105K020RNJ","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TAJS105K020RNJ","canonicalUrl":"https://icboms.com/kyocera-avx/TAJS105K020RNJ","factsUrl":"https://icboms.com/api/mcp/products/TAJS105K020RNJ","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TAJ series, Molded tantalum capacitor, 1 µF ±10%, 20 V rated, 12 Ohm ESR, 1206 (3216 Metric) case, -55°C to 125°C","salesMarkdown":"The 20 V rating gives headroom on a 12 V rail and comfortably handles a 5 V supply with margin for transients. Tolerance is ±10%, so the actual capacitance sits between 0.9 µF and 1.1 µF — tight enough for timing or filtering where the nominal value matters. ## ESR and temperature — the hidden derating factors The 12 Ohm ESR (Equivalent Series Resistance) is typical for a small-case tantalum at this capacitance. It limits ripple current: at 100 kHz, the self-heating from ripple current through 12 Ohm can push the internal temperature above ambient if the ripple exceeds ~100 mA RMS — check the ripple current derating curve in the datasheet. The capacitance shifts with temperature (typically +15% at -55°C, -10% at 125°C for X5R dielectrics; tantalum is more stable), so the filter corner frequency drifts less than with a ceramic cap. ## Active production — no EOL worry ## 1206 footprint — layout and sourcing The 1206 (3216 Metric) case measures 3.20 mm x 1.60 mm with a seated height of 1.20 mm. This is a common footprint shared with ceramic capacitors of the same size, so the board layout is standard — no special pad geometry required beyond the usual 0.50 mm to 0.70 mm pad overlap per IPC-7351. The manufacturer size code 'S' corresponds to the 1206 case.","metaTitle":"TAJS105K020RNJ KYOCERA AVX TAJ Series 1 µF 20 V Molded","metaDescription":"TAJS105K020RNJ: 1 µF ±10%, 20 V rated, 12 Ohm ESR, -55°C to 125°C, 1206 case. 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) Cut Tape (CT)","Features":"General Purpose","Tolerance":"±10%","Capacitance":"1 µF","Failure Rate":"-","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Active","Voltage - Rated":"20 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)":"12Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ce09bb895bbc5407352e9a690f57411c.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TAJS105K020RNJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TAJS105K020RNJ 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}}