{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L175SLYR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L175SLYR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L175SLYR","factsUrl":"https://icboms.com/api/mcp/products/1206L175SLYR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. POLY-FUSE®, LoRho series PTC resettable fuse, Type Polymeric, 1206L175SLYR, 1.75A hold current, 6V max, 1206 (3216 Metric) Concave package, Tape & Reel.","salesMarkdown":"## Polymeric PTC in a 1206 footprint The 1206L175SLYR is a polymeric positive temperature coefficient (PTC) resettable fuse from the POLY-FUSE LoRho series, designed for overcurrent protection in low-voltage circuits. It holds 1.75 A continuously and trips at 3.5 A, with a maximum interrupt rating of 50 A at 6 VDC. The 1206 (3216 Metric) concave package suits surface-mount assembly on standard PCB footprints, with a low profile of 0.071\" (1.80 mm) maximum thickness. ## Trip time and resistance profile Time to trip is 400 ms at the rated fault current — fast enough to protect downstream components from sustained overcurrent without nuisance tripping on short transients. Initial resistance (Ri) is a minimum of 5 mOhms, keeping I²R losses low during normal operation. After a trip event, the post-trip resistance (R1) rises to a maximum of 30 mOhms, which resets once the fault is cleared and power is cycled. Approvals include cURus and TUV, confirming compliance with North American and international safety standards for overcurrent protective devices.","metaTitle":"Littelfuse 1206L175SLYR PTC Resettable Fuse, 1.75A Hold","metaDescription":"Littelfuse 1206L175SLYR POLY-FUSE LoRho PTC resettable fuse, 1.75A hold current, 6V max, 1206 package, active production. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Polymeric","Series":"POLY-FUSE®, LoRho","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Lead Spacing":"-","Time to Trip":"400 ms","Current - Max":"50 A","Mounting Type":"Surface Mount","Voltage - Max":"6V","Package / Case":"1206 (3216 Metric), Concave","Product Status":"Active","Approval Agency":"cURus, TUV","Thickness (Max)":"0.071\\\" (1.80mm)","lifecycle_stage":"unknown","Size / Dimension":"0.128\\\" L x 0.065\\\" W (3.25mm x 1.65mm)","Current - Trip (It)":"3.5 A","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"1.75 A","Resistance - Initial (Ri) (Min)":"5 mOhms","Resistance - Post Trip (R1) (Max)":"30 mOhms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ba263e768b43be9aa2568c602b905b30.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the hold current and trip current for this PTC fuse?","answer":"The hold current (Ih) is 1.75 A maximum, and the trip current (It) is 3.5 A. It will not trip below the hold current under normal conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L175SLYR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L175SLYR 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}}