{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L110WR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L110WR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L110WR","factsUrl":"https://icboms.com/api/mcp/products/1206L110WR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. POLY-FUSE® 1206L series, PTC resettable fuse, 1206 (3216 Metric) SMD, 1.1 A hold, 2.2 A trip, 8 V max, 100 A max fault, 100 ms trip time.","salesMarkdown":"## PTC resettable fuse, 1206 footprint, 1.1 A hold The Littelfuse 1206L110WR is a surface-mount polymeric PTC resettable fuse from the POLY-FUSE® 1206L series, designed to protect low-voltage DC circuits up to 8 V. Its 1.1 A hold current (Ih) and 2.2 A trip current (It) define the normal operating window and the threshold at which the device switches to a high-resistance state to limit fault current. Packaged in a standard 1206 (3216 Metric) concave SMD footprint, it mounts directly to the PCB and is rated for a maximum interrupt current of 100 A. The 100 ms trip time at 8 V means it responds quickly to overcurrent events, limiting energy let-through to downstream components. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1206L110WR as obsolete. For existing BOM positions, availability is limited to surplus and broker inventory. Stock is lot-specific; quantities, date codes, and pricing are confirmed at the time of RFQ. ## Parametric profile for BOM-fit check Initial resistance (Ri) is 40 mOhms minimum, rising to 180 mOhms maximum after tripping (R1). The low Ri minimizes I²R losses during normal operation, while the post-trip resistance ensures sufficient voltage drop to hold the device in the tripped state until power is cycled. Operating temperature range spans -40°C to 85°C, covering most indoor and outdoor commercial/industrial environments. The device carries cURus and TUV agency approvals, confirming compliance with North American and IEC safety standards for polymeric PTC overcurrent protectors.","metaTitle":"1206L110WR Littelfuse PTC Resettable Fuse, 1.1A Hold, 8V","metaDescription":"Littelfuse 1206L110WR POLY-FUSE PTC resettable fuse, 1.1A hold current, 8V max, 1206 SMD. Obsolete, sourced to order. cURus, TUV approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Polymeric","Series":"POLY-FUSE®, 1206L","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Lead Spacing":"-","Time to Trip":"100 ms","Current - Max":"100 A","Mounting Type":"Surface Mount","Voltage - Max":"8V","Package / Case":"1206 (3216 Metric), Concave","Product Status":"Obsolete","Approval Agency":"cURus, TUV","Thickness (Max)":"0.039\\\" (1.00mm)","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.065\\\" W (3.20mm x 1.65mm)","Current - Trip (It)":"2.2 A","Height - Seated (Max)":"-","Operating Temperature":"-40°C~85°C","Current - Hold (Ih) (Max)":"1.1 A","Resistance - Initial (Ri) (Min)":"40 mOhms","Resistance - Post Trip (R1) (Max)":"180 mOhms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2443673099af1af603d0775e66a52582.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key ratings for the 1206L110WR?","answer":"Hold current (Ih) is 1.1 A, trip current (It) is 2.2 A, maximum voltage is 8 V, and maximum interrupt current is 100 A. Initial resistance is 40 mOhms minimum, post-trip resistance is 180 mOhms maximum. Trip time is 100 ms at rated voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L110WR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L110WR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}