{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPSV108K004R0040","brand":"KYOCERA AVX","brandSlug":"kyocera-avx","productSlug":"TPSV108K004R0040","canonicalUrl":"https://icboms.com/kyocera-avx/TPSV108K004R0040","factsUrl":"https://icboms.com/api/mcp/products/TPSV108K004R0040","rawCanonicalId":null},"summary":{"shortDescription":"KYOCERA AVX TPS series, Molded Tantalum Capacitor, TPSV108K004R0040, 1000 µF, 4 V, ±10%, 40 mOhm ESR, 2924 (7361 Metric), -55°C to +125°C.","salesMarkdown":"## 1000 µF bulk storage with 40 mOhm ESR for low-voltage rails The TPSV108K004R0040: The 40 mOhm ESR (Equivalent Series Resistance) is the critical parameter for this part — it determines how much ripple current the capacitor can handle without excessive self-heating, and directly impacts the output voltage ripple in a DC-DC converter or the transient response in a power distribution network. With a tolerance of ±10% and an operating temperature range spanning -55°C to +125°C, this capacitor is suited for industrial and automotive-grade power supply filtering, bulk energy storage on processor core rails, and input/output decoupling in voltage regulator modules. ## Active lifecycle — current production part For a BOM line using this 1000 µF / 4 V tantalum capacitor, the active status means no immediate replacement planning is required — the part can be specified into new designs with confidence that supply continuity is maintained. Sourcing is straightforward through standard distribution against an RFQ. ## What the 40 mOhm ESR means for your power rail design The 40 mOhm ESR at 100 kHz is the figure that governs the capacitor's AC performance. In a buck converter output stage, this ESR sets the output voltage ripple amplitude for a given ripple current — lower ESR means less ripple for the same switching frequency and inductor current. The 1000 µF capacitance provides the bulk charge storage needed to hold up the output voltage during load transients. When the load current steps from 0.5 A to 2 A, the capacitor supplies the initial charge deficit before the voltage regulator loop responds — the combination of 1000 µF and 40 mOhm ESR gives a characteristic time constant of 40 µs, which is well matched to the response time of typical switching regulators operating above 300 kHz.","metaTitle":"KYOCERA AVX TPSV108K004R0040 Tantalum Cap, 1000 µF, 4 V","metaDescription":"KYOCERA AVX TPSV108K004R0040 molded tantalum capacitor, 1000 µF ±10%, 4 V rated, 40 mOhm ESR, -55°C to +125°C, 2924 case. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Specialty Capacitors"],"specifications":{"Mfr":"KYOCERA AVX","Type":"Molded","Series":"TPS","Package":"Tape & Reel (TR)","Features":"General Purpose","Tolerance":"±10%","Capacitance":"1000 µF","Failure Rate":"-","Lead Spacing":"-","Mounting Type":"Surface Mount","Package / Case":"2924 (7361 Metric)","Product Status":"Active","Voltage - Rated":"4 V","lifecycle_stage":"unknown","Lifetime @ Temp.":"-","Size / Dimension":"0.287\\\" L x 0.240\\\" W (7.30mm x 6.10mm)","Height - Seated (Max)":"0.148\\\" (3.75mm)","Operating Temperature":"-55°C ~ 125°C","Manufacturer Size Code":"V","ESR (Equivalent Series Resistance)":"40mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5819","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b00017213ae4c6777a643c3e703ff6ae.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPSV108K004R0040/alternatives.json"},"ai":{"faq":[{"question":"What is the ESR of TPSV108K004R0040 and why does it matter?","answer":"The ESR is 40 mOhm, which is the equivalent series resistance at 100 kHz. This value directly controls the ripple voltage in power supply applications — lower ESR means less AC loss and lower output ripple for a given ripple current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/kyocera-avx/TPSV108K004R0040","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/kyocera-avx/TPSV108K004R0040 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}}