{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L075WR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L075WR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L075WR","factsUrl":"https://icboms.com/api/mcp/products/1206L075WR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse POLY-FUSE® 1206L series, polymeric PTC resettable fuse, 1206L075WR, 750 mA hold current, 8V max, 100 A interrupt, 1206 (3216 Metric) concave package.","salesMarkdown":"## Hold current and trip behaviour The 1206L075WR is a polymeric PTC resettable fuse from the POLY-FUSE 1206L series, rated for 750 mA hold current at 8V maximum. That hold current is the continuous DC current it passes without tripping at 25°C ambient — size the circuit so the normal operating current stays below this, not at it, to avoid nuisance trips near the thermal threshold. When a fault drives the current above the trip level, the device switches to a high-resistance state in typically 200 ms. After the fault clears and power is removed, it resets — no fuse replacement needed. ## Interrupt rating and approvals The device can interrupt fault currents up to 100 A at the rated 8V — this is the maximum short-circuit current it can safely clear without rupturing. For a low-voltage rail (5V or 3.3V USB, battery-protected lines), 100 A covers most realistic fault scenarios in portable or embedded gear. Safety agency approvals include cURus and TUV, which means the part is accepted for North American and European equipment-level safety certification without additional component-level testing. ## Obsolete — what that means for procurement Littelfuse lists the 1206L075WR as obsolete. For existing BOM lines that specify this exact part, supply is through independent distribution channels — quantities are confirmed at RFQ, and the parts are sourced as available surplus or new-old-stock inventory.","metaTitle":"Littelfuse 1206L075WR PTC Resettable Fuse, 750 mA Hold, 8V","metaDescription":"Littelfuse 1206L075WR POLY-FUSE polymeric PTC, 750 mA hold current, 8V max, 100 A interrupt. 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":"200 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)":"0.030\\\" (0.75mm)","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.065\\\" W (3.20mm x 1.65mm)","Current - Trip (It)":"1.5 A","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"750 mA","Resistance - Initial (Ri) (Min)":"90 mOhms","Resistance - Post Trip (R1) (Max)":"290 mOhms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b8fc92bc33c264d26251f523f168bfed.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the hold current and trip current of the 1206L075WR?","answer":"The hold current (Ih) is 750 mA, meaning the device will not trip below that current at 25°C. The trip current (It) is 1.5 A — above this level the PTC heats up and switches to high resistance within 200 ms."},{"question":"What approvals does the 1206L075WR carry?","answer":"It is approved by cURus and TUV, covering North American and European safety certification requirements for overcurrent protection components."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L075WR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L075WR 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}}