{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE18C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE18C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE18C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE18C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series Zener TVS diode, 1500W peak pulse power, bidirectional, 15.3V standoff, 26.46V clamp, DO-201AA axial through-hole package.","salesMarkdown":"## What the 1500W peak pulse rating means for your protection design The 1.5KE18C: At that pulse condition the device clamps at 26.46V maximum while conducting 60.3A peak current, so a 15.3V nominal rail sees protection up to that surge level before the TVS enters breakdown. The breakdown voltage range starts at 16.2V minimum, meaning the TVS begins conducting before the rail exceeds the safe operating area of downstream 12V or 15V-rated silicon. The bidirectional channel handles both positive and negative transients with a single device — useful for AC-coupled signal lines or symmetric supply rails. ## Package and board-fit: DO-201AA axial through-hole Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE18C is a through-hole part intended for wave-solder or hand-solder assembly. The axial leads require a drilled PCB with 1.0 mm (0.040 inch) typical hole diameter; the body sits above the board, so conformal coating must bridge the lead-to-body gap to prevent creepage under condensation. The wide range also means the device can be stored in uncontrolled warehouse conditions without moisture sensitivity concerns (MSL 1, per the axial package construction). ## Lifecycle reality: obsolete — sourcing the 1.5KE18C today Littelfuse lists the 1.5KE18C as obsolete. No pin-compatible direct replacement from Littelfuse has been announced, so a BOM that depends on this order code must either source from the secondary market or evaluate a functionally equivalent TVS from the same 1.5KE family (same package, same 1500W rating, same bidirectional configuration) with adjusted breakdown and clamping voltages.","metaTitle":"1.5KE18C Littelfuse TVS Diode, 1500W, Bidirectional, DO-201","metaDescription":"1.5KE18C Littelfuse Zener TVS, 1500W peak pulse, 15.3V standoff, 26.46V clamp, DO-201AA axial. Obsolete — sourced to order. RFQ for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"16.2V","Voltage - Clamping (Max) @ Ipp":"26.46V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"60.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7081","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is 1.5KE18C's listed type and series?","answer":"The 1.5KE18C is a Zener-type TVS diode belonging to the Littelfuse 1.5KE series. It is a bidirectional device with a single protection channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE18C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE18C 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}}