{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T18CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T18CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T18CA","factsUrl":"https://icboms.com/api/mcp/products/SM6T18CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T18CA, SM6T TRANSIL™ series, bidirectional TVS diode, 15.3 V reverse standoff, 600 W peak pulse power, 32.5 V clamping, DO-214AA SMB package, -55°C to 150°C junction temperature.","salesMarkdown":"## 15.3 V reverse standoff — the line voltage it guards The SM6T18CA is a bidirectional TRANSIL™ TVS diode from STMicroelectronics, part of the SM6T series. Its 15.3 V reverse standoff voltage defines the maximum DC or peak AC voltage it can sit across without conducting — the primary selection gate for any protection design. When the line exceeds the 17.1 V minimum breakdown, the device clamps transients to 32.5 V maximum, shunting up to 123 A of peak pulse current (8/20 µs waveform). The single bidirectional channel protects both polarities from a single device, simplifying BOM for AC signal lines, bipolar supplies, or data pairs. ## 600 W peak pulse power — sizing the protection budget Rated for 600 W peak pulse power over the standard 10/1000 µs waveform, this part handles the surge energy typical of IEC 61000-4-5 line-to-ground strikes on 12 V or 15 V rails. The 123 A peak current rating at the 8/20 µs shape is the figure to compare against your system's transient immunity target — derate for higher ambient temperature using the datasheet's power derating curve. ## Package and mounting Housed in the DO-214AA (SMB) surface-mount package, the SM6T18CA fits standard SMB footprints. The package supports reflow soldering; observe MSL ratings per the reel label for bake requirements before reflow. The surface-mount form factor suits automated assembly for medium-to-high volume production. ## Lifecycle and sourcing posture STMicroelectronics lists the SM6T18CA with an Active product status.","metaTitle":"SM6T18CA STMicroelectronics TVS Diode, 15.3 V Standoff","metaDescription":"STMicroelectronics SM6T18CA bidirectional TVS diode, 15.3 V reverse standoff, 600 W peak pulse power, DO-214AA SMB package. Active lifecycle.","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":"SM6T18","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)":"17.1V","Voltage - Clamping (Max) @ Ipp":"32.5V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"123A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1e6a6ede6221d6b6009e7d617f0a0cd9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM6T18CA unidirectional or bidirectional?","answer":"It is a bidirectional device with a single channel, protecting both positive and negative transients from a single component."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T18CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T18CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:36:52.328Z","lastPublished":"2026-07-16T14:36:52.328Z","indexable":true}}