{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC12C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC12C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC12C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC12C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMC series bidirectional Zener TVS diode, 1.5SMC12C, 1500W peak pulse power, 10.2V reverse standoff, 17.54V clamping, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"## What the ratings mean for a 12V rail The 1.5SMC12C: Its 10.2V reverse standoff voltage sits below the nominal rail, so the diode stays out of conduction during normal operation. When a surge pushes the line above 10.8V (the minimum breakdown point,), the device starts conducting and clamps the peak at 17.54V while shunting 91A of 10/1000µs pulse current. Housed in a DO-214AB (SMC) package with a supplier device package designation of DO-214AB (SMCJ), this surface-mount TVS occupies a standard footprint shared across the 1.5SMC family. The 1.5SMC series uses a common cathode marking scheme; the bidirectional variant like this one carries no polarity band, so the reel label is the only orientation reference until the part is soldered. ## Lifecycle reality — obsolete, sourced to order Littelfuse lists the 1.5SMC12C as obsolete. Because the 1.5SMC series shares a common DO-214AB footprint and the same 1500W peak pulse rating across breakdown voltages, a functional replacement exists within the same family at a different voltage point if the 10.2V standoff is not load-bearing. For designs that can tolerate a slightly higher or lower clamp threshold, a sibling in the 1.5SMC family with the same package and power rating is a drop-in candidate — no board spin required. If your schematic calls for a unidirectional part with the cathode band oriented to the rail, this bidirectional device will clamp both polarities equally but will not provide the asymmetric low-impedance path to ground that a unipolar TVS offers for positive surges. Confirm the circuit's surge polarity requirement before substituting. The 10/1000µs pulse current rating of 91A is the peak current the device can withstand once — repetitive surges at this level will degrade the junction. For applications with frequent transients (motor drives, solenoid banks), derate the peak pulse power per the manufacturer's pulse derating curve, which is not reproduced here but is standard for the 1.5SMC series.","metaTitle":"Littelfuse 1.5SMC12C TVS Diode, 1500W, DO-214AB","metaDescription":"Littelfuse 1.5SMC12C bidirectional Zener TVS, 1500W peak pulse, 10.2V standoff, 17.54V clamp. Obsolete — sourced to order. DO-214AB (SMCJ) package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","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)":"10.8V","Voltage - Clamping (Max) @ Ipp":"17.54V","Voltage - Reverse Standoff (Typ)":"10.2V","Current - Peak Pulse (10/1000µs)":"91A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5SMC12C in the same family?","answer":"Any bidirectional TVS in the 1.5SMC series with the same DO-214AB (SMC) package and 1500W peak pulse rating is a drop-in replacement for the footprint, but the breakdown voltage will differ. For a 12V rail, the 1.5SMC12C has a 10.2V standoff; a sibling with a 10V or 11V standoff (e.g., 1.5SMC10C or 1.5SMC11C) would clamp at a lower voltage and may trigger on normal line ripple. The 1.5SMC13C (11.1V standoff) is the next step up and provides more headroom above the 12V rail, but clamps at a higher voltage. No official cross-reference exists — the choice depends on the rail tolerance and surge m"},{"question":"What compliance documentation does Littelfuse provide for the 1.5SMC12C?","answer":"The 1.5SMC series is typically RoHS-compliant and UL-recognized per Littelfuse's standard TVS offering, but no certificate or declaration is confirmed in this listing. Verify compliance documentation with the supplier at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC12C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC12C when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}