{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0467004.NRHF","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0467004.NRHF","canonicalUrl":"https://icboms.com/littelfuse-inc/0467004.NRHF","factsUrl":"https://icboms.com/api/mcp/products/0467004.NRHF","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. Series 467 Board Mount Fast-Blow Fuse, 0467004.NRHF, 4 A, 32 V AC/DC, 0603 (1608 Metric), Surface Mount.","salesMarkdown":"## What the 4 A rating and fast-blow response mean for your circuit The 0467004.NRHF is a Littelfuse Series 467 surface-mount fuse rated 4 A with a fast-blow response time. Fast-blow means the fuse element is designed to open quickly on overcurrents just above the rating — it offers minimal tolerance for inrush spikes, so it is the right choice for circuits where the load current is steady and the fault path is low-impedance, not for capacitive or motor-start inputs that draw a brief surge at power-up. The 35 A breaking capacity at 32 V AC/DC tells you the fuse can safely interrupt a fault current up to that level without rupturing or sustaining an arc. If the available short-circuit current at the fuse location exceeds 35 A, this part is not a safe fit — step up to a higher-interrupting device in the same footprint. ## 0603 footprint and board-level integration The 0603 (1608 metric) package measures 0.063\" x 0.032\" x 0.012\" — a standard chip-size footprint that reflows on the same profile as 0402 and 0805 passives. The DC cold resistance of 0.00118 ohms means the voltage drop at 4 A is under 5 mV, negligible in a low-voltage rail. Operating temperature spans -55°C to 90°C, which covers most indoor and outdoor equipment but not engine-bay or high-temp industrial zones. If the ambient near the fuse exceeds 90°C, the 4 A rating must be derated per the manufacturer's curve — a common oversight when the fuse sits next to a hot regulator or power stage. ## Approvals and compliance UR (UL Recognized) means the fuse has been tested to UL 248-14 for supplementary protectors; CSA is the Canadian equivalent. No CE or UKCA marks are listed in the spec, so if the end product ships to the EU, verify the fuse's CE declaration separately. Littelfuse lists the 0467004.NRHF as Active on the lifecycle status — no NRND or EOL notice. That means it is still in regular production and available through franchised distribution.","metaTitle":"Littelfuse 0467004.NRHF Series 467 4A Fast-Blow 0603 Fuse","metaDescription":"Littelfuse 0467004.NRHF, Series 467, 4 A fast-blow surface-mount fuse in 0603 package. 35 A breaking capacity at 32 V. Active, 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); Cut Tape (CT)","Fuse Type":"Board Mount (Cartridge Style Excluded)","Melting I²t":"0.841","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":"0.00118 Ohms","Voltage Rating - AC":"32 V","Voltage Rating - DC":"32 V","Current Rating (Amps)":"4 A","Operating Temperature":"-55°C~90°C","Breaking Capacity @ Rated Voltage":"35A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/649812335218789f332d0f5127374e6a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the melting I²t of 0467004.NRHF and why does it matter?","answer":"The melting I²t is 0.841. This value represents the thermal energy required to open the fuse element. It is used to coordinate with downstream semiconductor ratings — the I²t of the fuse must be lower than the surge-withstand capability of the protected device to ensure the fuse clears before the component fails."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0467004.NRHF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0467004.NRHF 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}}