{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC9.1CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC9.1CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC9.1CA Zener TVS diode, 1500W peak pulse, 113.4A peak pulse current, 7.78V standoff / 8.65V breakdown / 13.4V clamping, -55 to 150°C junction, DO-214AB SMC surface mount.","salesMarkdown":"## What the 1.5SMC9.1CA does and where the clamping window sits The 1.5SMC9.1CA is a unidirectional Zener-based transient voltage suppressor in the 1.5SMC series — the 7.78 V reverse standoff is the working rail the protected circuit sees under normal conditions, and anything above 8.65 V breakdown initiates clamping. The 13.4 V maximum clamping voltage at the 113.4 A peak pulse rating tells you the suppressor handles a substantial surge current without collapsing the protected rail — the gap between 7.78 V and 13.4 V is the transient budget the downstream load must survive. At 1500 W peak pulse power the part is sized for secondary protection in power supplies, telecom rails, and industrial I/O — places where a 10/1000 µs surge event is the realistic threat, not the 8/20 µs lightning surge that demands a heavier 5 kW part. The 1.5 kW rating at the standard 10/1000 µs waveform is the Littelfuse datasheet figure; verify the waveform in your actual fault environment before committing. ## Temperature grade and the DO-214AB package in production The DO-214AB (SMCJ supplier package) is a standard surface-mount body; the cathode band marks the cathode end, and the recommended solder profile follows JEDEC J-STD-020 for moderate peak reflow temperatures — check the landing pad footprint against the datasheet footprint drawing before spin. Mounting is surface mount; tape-and-reel and cut-tape packaging are both listed, so the part suits both high-volume assembly and low-quantity rework. Watch the moisture sensitivity level for the SMC package if you are reflowing after long shelf storage — the datasheet IPC/JEDEC MSL rating applies if the reel has been open. ## Active production — what that means for your BOM line That puts it on the stable side of the lifecycle spectrum — the 1.5SMC series is a long-run Littelfuse line, but any part with a single-source OEM manufacture carries inherent supply risk that a second-source alternative mitigates at RFQ. The 1.5SMC base part number covers a wide voltage window; if you are cross-shopping siblings at different standoff voltages, confirm the exact 9.1 V rating before swapping.","metaTitle":"Littelfuse 1.5SMC9.1CA TVS Diode, 1500W 7.78V","metaDescription":"Littelfuse 1.5SMC9.1CA Zener TVS diode, 1500W peak pulse, 7.78V standoff, 13.4V clamping, -55 to 150°C junction. Active — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"113.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5SMC9.1CA used for?","answer":"It is a general-purpose Zener TVS diode rated 7.78 V standoff and 1500 W peak pulse — used to clamp transients on DC rails in power supplies, industrial control, and telecom equipment where the 10/1000 µs surge waveform is the design threat."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC9.1CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC9.1CA 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}}