{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L175PR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L175PR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L175PR","factsUrl":"https://icboms.com/api/mcp/products/1206L175PR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse POLY-FUSE®, 1206L series, polymeric PTC resettable fuse, 1206L175PR, 1.75 A hold, 3.5 A trip, 6 V max, 100 A max fault, surface mount 1206 package.","salesMarkdown":"## Board-fit note for the 1.75 A hold-current PTC The Littelfuse 1206L175PR is a polymeric PTC resettable fuse from the POLY-FUSE 1206L series, designed to protect low-voltage DC power rails from overcurrent faults while resetting automatically once the fault clears and power is cycled. Its 1.75 A hold current (Ih) is the maximum steady-state current the device can carry without tripping at 25°C ambient — size the protected circuit so the normal operating current stays below this threshold. At 3.5 A trip current (It) the PTC resistance rises sharply, limiting fault current within 500 ms typical — the downstream load sees a high-impedance state until the fault is removed and power is recycled. With a 6 V maximum voltage rating and 100 A maximum fault current, this part fits USB bus protection, battery pack output, and portable device power inputs where the rail stays under 6 V. ## Surface-mount integration and temperature envelope Mounted in a 1206 (3216 metric) concave package, the 3.25 mm x 1.65 mm footprint with 1.80 mm max thickness suits dense PCB layouts in portable and handheld electronics. Initial resistance is 20 mOhms minimum, rising to 90 mOhms maximum after tripping — the post-trip resistance adds series loss in the circuit until the device resets. ## Compliance and approvals for global shipment Carries cURus and TUV approvals, qualifying the part for equipment shipped into North American and European markets without additional component-level certification.","metaTitle":"Littelfuse 1206L175PR PTC Resettable Fuse, 1.75A Hold, 6V","metaDescription":"1206L175PR Littelfuse POLY-FUSE polymeric PTC resettable fuse, 1.75A hold current, 6V max, 100A fault, -40 to 85°C, cURus/TUV.","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®, 1206L","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Lead Spacing":"-","Time to Trip":"500 ms","Current - Max":"100 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)":"20 mOhms","Resistance - Post Trip (R1) (Max)":"90 mOhms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5400","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 1206L175PR?","answer":"The hold current (Ih) is 1.75 A maximum and the trip current (It) is 3.5 A. The device trips within 500 ms at the trip current level."},{"question":"What approvals does the 1206L175PR carry?","answer":"It carries cURus and TUV safety agency approvals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L175PR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L175PR 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}}