{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC6.8C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC6.8C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC6.8C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC6.8C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC Zener TVS diode, 1.5SMC6.8C, 5.8V standoff, 6.12V min breakdown, 1500W peak pulse, 144.8A peak pulse current, DO-214AB SMC package, surface mount, tape and reel.","salesMarkdown":"## What the 1.5SMC6.8C actually does in a circuit This is a unidirectional Zener-based TVS (transient voltage suppressor) — the 'C' suffix confirms bidirectional configuration across one channel. The 5.8 V typical reverse standoff is the working voltage — below it the device leaks quietly and does nothing, which is exactly what a properly biased TVS should do when the bus is clean. ## Peak pulse and clamping — the 1500 W number 1500 W peak pulse rating defines the surge energy the device can absorb once without degradation — it is a survival rating, not a continuous rating. The 144.8 A peak pulse current is the clamping-mode current corresponding to that energy envelope at the test waveform. When selecting a TVS for a given bus voltage, the standoff (5.8 V typ,) sets the normal operating bias; the clamping voltage (11.03 V max,) is what the downstream IC sees during the event. That 11.03 V ceiling must sit below the absolute-maximum input rating of whatever it protects. ## Package, mounting, and assembly The DO-214AB (SMCJ-style) package is a standard SMD body with a wide foot — the cathode bar is the wide pad, which is the thermal and electrical common. Tape-and-reel packaging suits high-volume SMT pick-and-place. The operating junction temperature extends to 150 °C, which gives headroom in sealed or thermally demanding enclosures — the junction-to-ambient derating curve in the Littelfuse 1.5SMC series datasheet is the sizing document for thermal pad layout. ## What the 'no power line protection' flag means The Power Line Protection field reads No — this is a signal-level or low-power secondary protection TVS, not a main-line AC or high-current DC bus clamp. For a 5.8 V standoff bus the clamping voltage of 11.03 V sits comfortably below most 12 V rail absolute-maximum ratings, but the 1500 W surge rating is a single-event spec. Repeated transients above the peak pulse rating will shift the Zener characteristic — budget a TVS replacement in the service manual if the end equipment sees frequent surge events.","metaTitle":"Littelfuse 1.5SMC6.8C TVS Diode, 5.8V Standoff, DO-214AB","metaDescription":"Littelfuse 1.5SMC6.8C Zener TVS diode, 5.8V standoff, 6.12V min breakdown, 1500W peak pulse, DO-214AB SMC. Obsolete — quoted to order against RFQ.","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)":"6.12V","Voltage - Clamping (Max) @ Ipp":"11.03V","Voltage - Reverse Standoff (Typ)":"5.8V","Current - Peak Pulse (10/1000µs)":"144.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC6.8C/alternatives.json"},"ai":{"faq":[{"question":"What series does the 1.5SMC6.8C belong to?","answer":"The series covers a range of standoff voltages; the '6.8' in the part number indicates the nominal breakdown/working voltage in the 6.8 V class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC6.8C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC6.8C when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T12:04:34.329Z","lastPublished":"2026-07-21T12:04:34.329Z","indexable":true}}