{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0603L008YR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"0603L008YR","canonicalUrl":"https://icboms.com/littelfuse-inc/0603L008YR","factsUrl":"https://icboms.com/api/mcp/products/0603L008YR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. POLY-FUSE®, 0603L series, polymeric PTC resettable fuse, 0603L008YR, 80 mA hold, 15 V, 40 A max, 0603 concave package.","salesMarkdown":"## 80 mA hold, 15 V — the overcurrent threshold that matters The 0603L008YR is a Littelfuse POLY-FUSE polymeric PTC resettable fuse in the 0603L series, designed to protect low-voltage DC rails from overcurrent faults. Its 80 mA hold current (Ih) is the continuous load it carries without tripping; above that, the internal polymer heats and the resistance jumps to a post-trip maximum of 12 Ohms, limiting the fault current. Rated for a maximum voltage of 15 V and a maximum fault current of 40 A, this part suits battery-powered portable electronics, USB peripherals, and other 5–12 V rails where a resettable overcurrent protector is preferred over a one-time fuse. ## 0603 footprint, surface-mount — board-fit constraints The initial resistance (Ri) is 2.5 Ohms minimum, and the post-trip resistance (R1) rises to 12 Ohms maximum. The 1 s time-to-trip at 25 °C means the fuse clears a fault within one second under rated conditions — fast enough to protect downstream silicon from sustained overcurrent. ## Active production, cURus and TUV approved For designs that need a resettable fuse at this hold current and voltage, this part is a direct BOM fit with no substitution guesswork.","metaTitle":"0603L008YR Littelfuse POLY-FUSE PTC, 80 mA hold, 15 V","metaDescription":"0603L008YR Littelfuse POLY-FUSE polymeric PTC resettable fuse, 80 mA hold current, 15 V max, 40 A fault. Active production. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Type":"Polymeric","Series":"POLY-FUSE®, 0603L","Ratings":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Lead Spacing":"-","Manufacturer":"Littelfuse Inc.","Time to Trip":"1 s","Current - Max":"40 A","Mounting Type":"Surface Mount","Voltage - Max":"15V","Package / Case":"0603 (1608 Metric), Concave","Approval Agency":"cURus, TUV","Thickness (Max)":"0.024\\\" (0.60mm)","lifecycle_stage":"unknown","Size / Dimension":"0.063\\\" L x 0.031\\\" W (1.60mm x 0.80mm)","Current - Trip (It)":"200 mA","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"80 mA","Resistance - Initial (Ri) (Min)":"2.5 Ohms","Resistance - Post Trip (R1) (Max)":"12 Ohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ccb5c727f65213c4a28c6b4acfe0538d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 0603L008YR and get a price?","answer":"The 0603L008YR is available to order through our desk. Submit an RFQ with your target quantity and we will confirm lead time and pricing from our supply network."},{"question":"What is the hold current and trip current for 0603L008YR?","answer":"The hold current (Ih) is 80 mA maximum — the fuse carries this continuously without tripping. The trip current (It) is 200 mA, at which the device will start to heat and switch to its high-resistance state within 1 second typical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/0603L008YR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/0603L008YR 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}}