{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T23CAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T23CAY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T23CAY","factsUrl":"https://icboms.com/api/mcp/products/SM30T23CAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T23CAY, Automotive AEC-Q101 TRANSIL™ bidirectional Zener TVS, 3 kW peak pulse power, 20 V standoff, 32.4 V clamping, DO-214AB SMC, surface mount.","salesMarkdown":"## 3 kW bidirectional TVS for automotive transient protection The STMicroelectronics SM30T23CAY is a bidirectional Zener TVS diode from the TRANSIL™ SM30TY series, AEC-Q101 qualified for automotive applications. It delivers 3000 W (3 kW) peak pulse power per the 10/1000 µs waveform, clamping transients at 32.4 V maximum from a 20 V reverse standoff. The single bidirectional channel in a DO-214AB (SMC) surface-mount package suits it for protecting 12 V and 24 V automotive power rails, ECU inputs, and sensor lines against load-dump, inductive kickback, and ESD events across a -55°C to 175°C junction temperature range. The 92.6 A peak pulse current rating (10/1000 µs) paired with the 3 kW power rating tells you this part can absorb substantial surge energy without failing short. For a 20 V standoff rail, the 32.4 V clamping voltage leaves a 12.4 V headroom margin above the nominal bus — enough to keep downstream 36 V-rated components safe during a load-dump event. The bidirectional structure means polarity doesn't matter during assembly, which simplifies pick-and-place and reduces orientation errors on high-volume automotive boards. ## Active lifecycle, AEC-Q101 traceability The AEC-Q101 qualification means each device has passed automotive-grade stress tests (HBM ESD, temperature cycling, high-temperature reverse bias) and is manufactured in an IATF 16949-certified line. ## Sourcing and fit for the BOM This is the exact ordering code for the bidirectional, AEC-Q101 qualified variant in the SM30TY family. The base product number SM30T23 covers multiple polarity and qualification options — confirm the suffix CAY (bidirectional, automotive) matches your BOM line.","metaTitle":"SM30T23CAY Automotive TVS Diode, 3 kW, AEC-Q101, SMC","metaDescription":"STMicroelectronics SM30T23CAY bidirectional Zener TVS, 3 kW peak pulse power, 20 V standoff, AEC-Q101 qualified.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"Automotive, AEC-Q101, SM30TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"3000W (3kW)","Base Product Number":"SM30T23","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"22.2V","Voltage - Clamping (Max) @ Ipp":"32.4V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"92.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T23CAY bidirectional?","answer":"Yes, the SM30T23CAY is a single-channel bidirectional Zener TVS, meaning it clamps both positive and negative transients symmetrically and is not polarity-sensitive during assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T23CAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T23CAY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:43:26.506Z","lastPublished":"2026-07-16T15:43:26.506Z","indexable":true}}