{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L020/30YR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L020-30YR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L020-30YR","factsUrl":"https://icboms.com/api/mcp/products/1206L020%2F30YR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse POLY-FUSE® 1206L series, PTC resettable fuse, 200 mA hold current, 30 VDC max, 100 A fault current, 1206 (3216 Metric) concave package, Tape & Reel.","salesMarkdown":"## Active production — what the hold current means for your BOM The 1206L020/30YR: Its 200 mA hold current (Ih) is the maximum steady-state current the device can carry without tripping at 25 °C ambient — above this threshold the internal polymer heats and switches to a high-resistance state, protecting the downstream circuit. The trip current (It) is 420 mA minimum, meaning the fuse is guaranteed to transition within 100 ms when the fault current reaches that level, limiting the energy let-through to the load. ## Voltage and fault-current ceiling Rated for a maximum voltage of 30 V and a maximum fault current of 100 A, this PTC can safely interrupt short circuits on low-voltage DC rails up to those limits without rupturing or arcing. Initial resistance (Ri) is 650 mOhms minimum, rising to 2.6 Ohms maximum after tripping (R1) — this post-trip resistance is the series impedance the circuit sees until the device cools and resets, which can take seconds to minutes depending on ambient temperature and current. ## Temperature range and agency approvals Safety certifications include cURus and TUV, qualifying the fuse for North American and European equipment approvals without additional component-level testing.","metaTitle":"1206L020/30YR Littelfuse PTC Resettable Fuse, 200mA, 30V","metaDescription":"Littelfuse 1206L020/30YR POLY-FUSE PTC resettable fuse, 200mA hold, 30V max, 100A fault, 100ms trip. Active production, cURus/TUV approved. Order against RFQ.","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":"100 ms","Current - Max":"100 A","Mounting Type":"Surface Mount","Voltage - Max":"30V","Package / Case":"1206 (3216 Metric), Concave","Product Status":"Active","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)":"420 mA","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"200 mA","Resistance - Initial (Ri) (Min)":"650 mOhms","Resistance - Post Trip (R1) (Max)":"2.6 Ohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5700","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 this PTC fuse?","answer":"The hold current (Ih) is 200 mA, and the trip current (It) is 420 mA. At steady-state currents up to 200 mA the device remains low-resistance; above 420 mA it will trip within 100 ms, protecting the load."},{"question":"What package and approvals does this part have?","answer":"It comes in a 1206 (3216 Metric) concave surface-mount package and carries cURus and TUV safety approvals, covering North American and European regulatory requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L020-30YR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L020-30YR 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}}