{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE440CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"1.5KE440CA","canonicalUrl":"https://icboms.com/stmicroelectronics/1.5KE440CA","factsUrl":"https://icboms.com/api/mcp/products/1.5KE440CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics 1.5KE440CA, TRANSIL™ series, bidirectional TVS Zener, 376 V reverse standoff, 776 V clamping, 1500 W peak pulse power, DO-201AA/DO-27 axial package, through-hole mount.","salesMarkdown":"The STMicroelectronics 1.5KE440CA is a 1500 W bidirectional transient voltage suppressor from the TRANSIL™ series, designed to clamp transients on AC mains, DC power buses, and signal lines where the normal operating voltage stays at or below 376 V. The device is a Zener-type TVS, not a standard rectifier: it conducts sharply at the breakdown voltage (418 V minimum) and clamps the let-through to 776 V maximum at the rated peak pulse current of 13 A for the 10/1000 µs waveform, also characterized at 8/20 µs. This is a single bidirectional channel, so it clamps both polarities symmetrically — useful for AC-coupled or bipolar rails where a unipolar part would need two devices back-to-back. ## 1500 W peak pulse — sizing the surge margin The 1500 W peak pulse power (1.5 kW) at 10/1000 µs is the headline surge rating. For a 376 V rail, the 13 A peak pulse current means the part can absorb a transient that would otherwise punch through a downstream regulator or driver. The 8/20 µs waveform rating (also 13 A) covers faster ESD or lightning-induced events per IEC 61000-4-5. If your expected transient energy exceeds 1500 W for the given pulse width, you need a higher-power device in the 1.5KE family or a parallel array. The 180 pF capacitance at 1 MHz is low enough for most power and signal lines but may load high-speed data buses above a few MHz. ## DO-201 axial — through-hole mounting and board fit The 1.5KE440CA comes in a DO-201AA / DO-27 axial-lead package, through-hole mount. The body is cylindrical with formed leads for insertion into a plated through-hole. The DO-201 footprint is standard for 1.5 kW TVS devices; the axial leads handle the surge current without trace lift-off if the PCB copper is sized for the peak current. Cut Tape (CT) and Tape & Box (TB) packaging options are available for different assembly flows. The base product number is 1.5KE440; the suffix CA indicates a bidirectional device (the A suffix alone would be unipolar).","metaTitle":"1.5KE440CA STMicroelectronics TVS, 1500W Bidirectional","metaDescription":"STMicroelectronics 1.5KE440CA bidirectional TVS diode, 376 V standoff, 776 V clamping, 1500 W peak pulse, DO-201 axial. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"1.5KE, TRANSIL™","Package":"Cut Tape (CT); Tape & Box (TB)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE440","Operating Temperature":"-","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"180pF @ 1MHz","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"418V","Voltage - Clamping (Max) @ Ipp":"776V","Voltage - Reverse Standoff (Typ)":"376V","Current - Peak Pulse (10/1000µs)":"13A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/572f99690aeb2b0f302ed9cdcfd976ec.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE440CA/alternatives.json"},"ai":{"faq":[{"question":"Is 1.5KE440CA bidirectional or unidirectional?","answer":"1.5KE440CA is a bidirectional TVS with a single bidirectional channel, clamping both positive and negative transients symmetrically. The CA suffix in the order code indicates bidirectional; the A suffix (1.5KE440A) would be unipolar."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/1.5KE440CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/1.5KE440CA 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}}