{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1206L500SL-VYR","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1206L500SL-VYR","canonicalUrl":"https://icboms.com/littelfuse-inc/1206L500SL-VYR","factsUrl":"https://icboms.com/api/mcp/products/1206L500SL-VYR","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse POLY-FUSE®, LoRho series, Polymeric PTC Resettable Fuse, 1206 (3216 Metric) Concave package, 5A hold current, 6V max, 50A max fault current, Tape & Reel.","salesMarkdown":"Littelfuse has marked the 1206L500SL-VYR as obsolete. 5 A hold current (Ih) at 25 °C ambient — this is the steady-state current the PTC carries without tripping. The trip current (It) is 10 A, meaning the device transitions to a high-resistance state when the fault current exceeds that threshold. Maximum fault current is 50 A at 6 V — the PTC safely interrupts faults up to that level without rupturing. The 6 V max voltage limits it to low-voltage rails (USB, battery, logic supplies). Time to trip is 2 seconds at 25 °C — this is the time from fault onset to the resistance jump. For a USB port short, 2 seconds is long enough for the upstream regulator to current-limit first; the PTC acts as a backup or over-temperature protector. Initial resistance (Ri) is 1 mOhm minimum, post-trip resistance (R1) is 12 mOhm maximum. The low Ri means minimal I²R loss in normal operation — important for a 5 A rail where every milliohm costs 25 mW of heat. ## Package and board-fit The concave termination style helps with solder fillet formation on the end caps, reducing tombstoning risk during reflow. Operating temperature range is -40°C to 85°C — standard industrial/commercial grade. The hold current derates above 25 °C; at 85 °C the 5 A rating drops to roughly 3.5 A (per the Littelfuse derating curve for the LoRho series). ## Approvals and compliance cURus and TUV approved — the part is recognized for North American and European safety standards.","metaTitle":"1206L500SL-VYR Littelfuse PTC Resettable Fuse, 5A, 6V, 1206","metaDescription":"1206L500SL-VYR Littelfuse POLY-FUSE LoRho PTC resettable fuse. 5A hold, 50A max, 6V, 1206 package. Obsolete — sourced to order. RFQ for pricing.","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®, LoRho","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Lead Spacing":"-","Time to Trip":"2 s","Current - Max":"50 A","Mounting Type":"Surface Mount","Voltage - Max":"6V","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)":"10 A","Height - Seated (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Current - Hold (Ih) (Max)":"5 A","Resistance - Initial (Ri) (Min)":"1 mOhms","Resistance - Post Trip (R1) (Max)":"12 mOhms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1bba25c221c1a0e464f2c46553bc04f5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the hold current and trip current of the 1206L500SL-VYR?","answer":"Hold current (Ih) is 5 A maximum at 25 °C. Trip current (It) is 10 A. The device will not trip below 5 A and will reliably trip above 10 A."},{"question":"What approvals does the 1206L500SL-VYR carry?","answer":"cURus and TUV. These cover North American and European safety agency recognition for polymeric PTC fuses."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1206L500SL-VYR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1206L500SL-VYR 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}}