{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L005/60WR-A","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L005-60WR-A","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L005-60WR-A","factsUrl":"https://icboms.com/api/mcp/products/1206L005%2F60WR-A","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. POLY-FUSE®, 1206L series, polymeric PTC resettable fuse, 1206 (3216 Metric) concave package, 50 mA hold current, 60 V max, AEC-Q200.","salesMarkdown":"## Hold current and trip current — the sizing pair The 1206L005/60WR-A: The PTC holds 50 mA continuously and trips at 150 mA. That 3:1 ratio is typical for polymeric resettable fuses — the device stays cool at the rated load and switches to a high-resistance state when the fault current exceeds the trip threshold. At 60 V max and 10 A max interrupt current, this part clears faults in low-power DC rails — think 12 V/24 V automotive sensor supplies, or 48 V telecom line cards where a hard short would otherwise burn a trace. AEC-Q200 qualification means the part passed automotive-grade stress tests: thermal shock, moisture resistance, mechanical shock, and vibration. This is the standard for under-hood and cabin modules that see -40°C to 85°C — an engine ECU or a body controller that lives through a northern winter and a summer heat soak. cURus and TUV approvals cover North American and European equipment safety — the PTC is accepted in UL 60950-1 and IEC 62368-1 power circuits without additional component-level testing. ## Resistance and time-to-trip — the reset trade-off Initial resistance is 3.6 Ohms minimum; after tripping it rises to 20 Ohms maximum. The 3.6 Ohm floor means a 50 mA load drops 180 mV — negligible in a 24 V rail but worth checking in a 3.3 V sensor supply where every millivolt of IR drop eats into the regulator headroom. Time to trip is 1.5 s typical at 25°C. That is fast enough to protect a wire or PCB trace from a dead short, but slow enough that a brief inrush (a capacitor bank charging) will not nuisance-trip it. At elevated ambient the trip time shortens — the polymer heats faster when the base temperature is already near the Curie point. ## Package and board integration It reflows on a standard lead-free profile and does not require a special pad layout beyond the recommended land pattern in the POLY-FUSE application note. Supplied on tape and reel or cut tape — the reel suits production pick-and-place; cut tape works for prototype builds and small-batch runs.","metaTitle":"1206L005/60WR-A Littelfuse PTC Resettable Fuse, 50mA, 60V","metaDescription":"Active Littelfuse 1206L005/60WR-A polymeric PTC resettable fuse, 50 mA hold, 60 V max, AEC-Q200 qualified. Quoted to 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":"AEC-Q200","Lead Spacing":"-","Time to Trip":"1.5 s","Current - Max":"10 A","Mounting Type":"Surface Mount","Voltage - Max":"60V","Package / Case":"1206 (3216 Metric), Concave","Product Status":"Active","Approval Agency":"cURus, TUV","Thickness (Max)":"0.049\\\" (1.25mm)","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.065\\\" W (3.20mm x 1.65mm)","Current - Trip (It)":"150 mA","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"50 mA","Resistance - Initial (Ri) (Min)":"3.6 Ohms","Resistance - Post Trip (R1) (Max)":"20 Ohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9dbb1e5d31100aef3240341310204cf1.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L005-60WR-A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L005-60WR-A 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}}