{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE550CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE550CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE550CA","factsUrl":"https://icboms.com/api/mcp/products/1.5KE550CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series bidirectional Zener TVS diode, 1.5KE550CA, 1500W peak pulse power, 468V reverse standoff, 760V clamping, DO-201AA axial through-hole.","salesMarkdown":"## Clamping voltage and the transient it stops The 1.5KE550CA: Its 468V reverse standoff voltage means the protected rail can sit at 468V DC or peak AC without the diode conducting leakage; the device starts clamping when the transient exceeds the 522.5V minimum breakdown voltage. At the full 2A peak pulse current (Ipp), the clamping voltage is limited to 760V maximum — this is the voltage the downstream components must survive. The 1500W rating is the product of clamp voltage and Ipp at the test waveform; for shorter pulses the diode can absorb more energy, but the 760V ceiling does not change. ## Package and board-fit reality The DO-201AA (DO-27) axial-lead package is a through-hole format with a 0.052-inch diameter lead. The body length is about 0.4 inches — the leads are formed for through-hole insertion, not surface mount. The 1.5KE series uses tin-plated copper leads rated for the full 1500W pulse without lead fatigue. The DO-201 package dissipates heat through the leads into the PCB copper; a 1-ounce copper trace with at least 0.5-inch lead length per side is typical for the rated power. ## Production status and compliance trail Available in Tape & Reel (TR) or Cut Tape (CT) packaging, which suits both prototype runs and production reels. The base part number 1.5KE covers the full family; the 550CA suffix specifies the 468V standoff bidirectional variant. The General Purpose application class means no automotive (AEC-Q101) or medical-specific qualification is claimed. RoHS and REACH compliance documentation is standard from Littelfuse for this series; the lead-free finish is compatible with standard soldering profiles.","metaTitle":"Littelfuse 1.5KE550CA TVS Diode, 1500W, 468V Standoff","metaDescription":"Littelfuse 1.5KE550CA bidirectional Zener TVS, 1500W peak pulse, 468V reverse standoff, 760V clamp. Active production, DO-201 axial. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"Active","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)":"522.5V","Voltage - Clamping (Max) @ Ipp":"760V","Voltage - Reverse Standoff (Typ)":"468V","Current - Peak Pulse (10/1000µs)":"2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3958","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Littelfuse provide for 1.5KE550CA?","answer":"Standard Littelfuse documentation for the 1.5KE series includes RoHS and REACH compliance declarations. No UL, IEC, or AEC-Q101 certification is listed for this general-purpose part. The lead-free finish meets the EU RoHS directive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE550CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE550CA 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}}