{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400CAHA0G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE400CAHA0G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE400CAHA0G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400CAHA0G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE series, Automotive Grade AEC-Q101, Bidirectional Zener TVS Diode, 1500W Peak Pulse, 342V Standoff, 548V Clamp, DO-201AA/DO-27 Axial, Tape & Box.","salesMarkdown":"## Why the AEC-Q101 grade matters for this TVS The 1.5KE400CAHA0G carries AEC-Q101 qualification, which is the automotive discrete semiconductor stress test standard — this means the part has passed 1000-hour high-temperature reverse bias (HTRB), temperature cycling, and ESD screening at the wafer level. For an ECU designer, that qualification is the difference between a part that survives 15 years of underhood thermal cycles and one that drifts off-spec at the third summer. ## Clamping voltage and the protection window The reverse standoff voltage of 342V means it sits transparent on a 300-340V DC bus and only starts conducting when a transient pushes past that level — no leakage penalty during normal operation. The single bidirectional channel handles both positive and negative transients in one package, which saves board space on AC-coupled lines or bipolar power rails. No polarity worries during assembly — the two leads are interchangeable. The 175°C ceiling is the same temperature grade required by AEC-Q101 Grade 0 applications. ## Package and board integration Housed in the DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE400CAHA0G mates with standard 0.040-inch diameter holes on a 0.300-inch lead spacing. The axial body allows either vertical or horizontal mounting, which is useful when board height is constrained in a junction box or ECU housing. Supplied in Tape & Box (TB) format, the parts are body-taped for automatic insertion equipment — the box construction prevents the axial leads from tangling during transit. This removes the single-source risk that often accompanies automotive-qualified parts in older package styles. The base product number 1.5KE400 covers a family of voltage variants in the same 1500W platform, so if a different standoff voltage is needed for a BOM revision, the package and qualification remain consistent.","metaTitle":"1.5KE400CAHA0G TVS Diode, 1500W, AEC-Q101, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE400CAHA0G bidirectional Zener TVS, 1500W peak pulse, 342V standoff, 548V clamp. AEC-Q101 qualified.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Grade":"Automotive","Series":"1.5KE","Package":"Tape & Box (TB)","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE400","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"380V","Voltage - Clamping (Max) @ Ipp":"548V","Voltage - Reverse Standoff (Typ)":"342V","Current - Peak Pulse (10/1000µs)":"2.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3688","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a688563676897fea683fa9d5a5542f4e.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE400CAHA0G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5KE400CAHA0G 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}}