{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CA R7G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC9.1CA-R7G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC9.1CA-R7G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA%20R7G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5SMC9.1CA R7G, bidirectional Zener TVS diode, 7.78V standoff, 8.65V breakdown, 13.4V clamping @ 117A, 1500W peak pulse, -55°C to 150°C TJ, DO-214AB SMC surface mount, Tape & Reel.","salesMarkdown":"## What a 1.5SMC TVS diode does on a board The 1.5SMC9.1CA R7G is a bidirectional transient voltage suppressor — the CA suffix marks the complementary (bidirectional) polarity variant in the 1.5SMC series. The 7.78 V reverse standoff rating sets the continuous working voltage the line can sit at without the TVS conducting — below this the device stays invisible to normal operation. ## Clamping performance and the 1.5 kW rating The clamping voltage of 13.4 V at the 117 A peak current is what the downstream IC actually sees during a fault; the margin between the 7.78 V standoff and the 13.4 V clamp gives the protected circuit room to survive without false triggering. ## DO-214AB SMC package and board assembly Tape-and-reel packaging is the standard orientation for high-volume SMT line feeding; verify the paste mask matches the SMC footprint and that the thermal pad under the body has adequate vias to the ground plane if the application demands repeated transients — the 150 °C maximum junction temperature is the ceiling, and repeated clamping events heat the junction through the lead-frame.","metaTitle":"1.5SMC9.1CA R7G TVS Diode, 7.78V Standoff, DO-214AB","metaDescription":"Taiwan Semiconductor 1.5SMC9.1CA R7G — bidirectional TVS diode, 7.78V standoff, 13.4V clamping, 1500W peak pulse, DO-214AB SMC. Active.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC9.1","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"117A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA%20R7G/alternatives.json"},"ai":{"faq":[{"question":"What standoff voltage should I use for a 5 V rail?","answer":"A 7.78 V standoff gives roughly 57 % headroom above a 5 V nominal rail — adequate for most digital and analog rails in that voltage class. The 8.65 V minimum breakdown keeps the TVS off during normal operation while still protecting below the 13.4 V clamping ceiling."},{"question":"How does the 1.5SMC series fit against a standard SMC TVS?","answer":"The 1.5SMC family is the bidirectional CA variant of the 1.5SM unidirectional series — same 1.5 kW peak pulse rating, same DO-214AB footprint, same tape-and-reel packaging. For a single-polarity rail the unidirectional 1.5SM type is the direct counterpart; for a bidirectional or AC-coupled line the CA is the correct selection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC9.1CA-R7G","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/1.5SMC9.1CA-R7G 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}}