{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T56CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T56CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T56CA","factsUrl":"https://icboms.com/api/mcp/products/SM6T56CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T56CA, TRANSIL™ series, bidirectional TVS diode, 600W peak pulse power, 53.2V min breakdown, 100V clamping, DO-214AA SMB package, -55°C to 150°C.","salesMarkdown":"## 53.2V breakdown — where it triggers and why that matters The SM6T56CA is a bidirectional TRANSIL™ TVS diode from STMicroelectronics, part of the SM6T series. Its 53.2V minimum breakdown voltage defines the point where the device starts clamping a transient. For a 48V nominal rail — common in telecom and industrial power — this breakdown sits comfortably above the steady-state voltage but triggers well before most downstream components hit their absolute maximum rating. ## Bidirectional — one device for both polarities With a single bidirectional channel, the SM6T56CA clamps positive and negative transients symmetrically. That means one component protects a signal line against both overvoltage and undervoltage spikes, which is useful on AC-coupled data lines, RS-485 pairs, or dual-supply analog inputs. No need to back-to-back two unidirectional diodes — the BOM stays lean. ## 600W peak pulse — sizing the surge protection Rated at 600W peak pulse power for the 10/1000µs waveform, this device handles the energy from a typical IEC 61000-4-5 surge on a 48V telecom line or a 24V industrial bus. If your downstream silicon is rated for 120V absolute maximum, you have 20V of margin — enough for most secondary-protection scenarios. ## Temperature range and package — design-in notes No power line protection means this is a signal-line or low-power rail device, not a mains-side suppressor.","metaTitle":"STMicro SM6T56CA TRANSIL TVS, 600W Bidirectional, DO-214AA","metaDescription":"STMicroelectronics SM6T56CA bidirectional TVS diode, 600W peak pulse, 53.2V breakdown, DO-214AA SMB. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SM6T, TRANSIL™","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T56","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Voltage - Breakdown (Min)":"53.2V","Voltage - Clamping (Max) @ Ipp":"100V","Voltage - Reverse Standoff (Typ)":"47.6V","Current - Peak Pulse (10/1000µs)":"40A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1e6a6ede6221d6b6009e7d617f0a0cd9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM6T56CA/alternatives.json"},"ai":{"faq":[{"question":"Is SM6T56CA bidirectional or unidirectional?","answer":"The SM6T56CA is a bidirectional TVS diode, clamping both positive and negative transients symmetrically. One device protects a line against overvoltage and undervoltage spikes."},{"question":"What package does SM6T56CA come in?","answer":"It comes in a DO-214AA SMB surface-mount package, a standard footprint for TVS diodes in this power class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T56CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T56CA 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}}