{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"046703.5NRHF","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"046703.5NRHF","canonicalUrl":"https://icboms.com/littelfuse-inc/046703.5NRHF","factsUrl":"https://icboms.com/api/mcp/products/046703.5NRHF","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. Series 467, Board Mount (Cartridge Style Excluded) fast-blow chip fuse, surface-mount 0603 (1608 Metric), 3.5 A, 32 V AC/DC, 35 A breaking capacity, Tape & Reel.","salesMarkdown":"## 3.5 A fast-blow in 0603 — what the ratings mean for the BOM The Littelfuse 046703.5NRHF is a Series 467 fast-blow chip fuse rated 3.5 A at 32 V AC/DC, with a 35 A interrupting rating at rated voltage. The 35 A breaking capacity means it safely clears a short-circuit fault up to that current without rupturing the package — a critical fit check when the available fault current at the board's input rail exceeds the fuse's interrupt rating. The 0.4306 melting I²t is the energy required to open the element. For a 3.5 A fast-blow fuse in a 0603 package, that I²t is low enough to protect a semiconductor input stage from a sustained overload, but high enough to ride through the inrush of a 100 µF input capacitor without nuisance opening — the same I²t number is the one the designer compares against the capacitor's surge energy. ## 0603 SMF footprint and board-level integration The 0.0139 Ohm DC cold resistance at 3.5 A produces a voltage drop of about 49 mV and a power dissipation of roughly 170 mW — negligible in most circuits, but worth checking against the board's copper pour for ambient temperatures above 85 °C. The tape-and-reel packaging supports pick-and-place assembly with no manual handling step. The -55 °C to 90 °C operating range covers standard commercial and industrial enclosures; the upper limit of 90 °C means the fuse should not be placed near a hot regulator or power stage without thermal margin. ## Approvals and compliance for regulatory acceptance Carries CSA and UR recognition — the UR mark means UL 248-14 listing for supplementary protectors, which is the standard for board-level fuses not intended as branch-circuit protection. This approval set covers North American and Canadian regulatory acceptance for the end equipment.","metaTitle":"Littelfuse 046703.5NRHF Series 467 Fast-Blow 0603 Fuse","metaDescription":"Littelfuse 046703.5NRHF Series 467 fast-blow chip fuse, 3.5 A, 32 V AC/DC, 35 A breaking capacity. 0603 SMF package. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Color":"-","Series":"467","Package":"Tape & Reel (TR)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.4306","Mounting Type":"Surface Mount","Response Time":"Fast Blow","Package / Case":"0603 (1608 Metric)","Product Status":"Active","Approval Agency":"CSA, UR","lifecycle_stage":"unknown","Size / Dimension":"0.063\\\" L x 0.032\\\" W x 0.012\\\" H (1.60mm x 0.81mm x 0.31mm)","DC Cold Resistance":"0.0139 Ohms","Voltage Rating - AC":"32 V","Voltage Rating - DC":"32 V","Current Rating (Amps)":"3.5 A","Operating Temperature":"-55°C ~ 90°C","Breaking Capacity @ Rated Voltage":"35A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5550","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/649812335218789f332d0f5127374e6a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity of the 046703.5NRHF?","answer":"The breaking capacity at rated voltage (32 V AC/DC) is 35 A. This is the maximum fault current the fuse can safely interrupt. For circuits where the prospective short-circuit current exceeds 35 A, a higher-interrupting-rated fuse or a current-limiting upstream device is needed."},{"question":"What approvals does the 046703.5NRHF carry?","answer":"It is recognized by CSA and UR (UL Recognition). These marks cover North American regulatory acceptance for use as a supplementary protector per UL 248-14."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/046703.5NRHF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/046703.5NRHF 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}}