{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMB43CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMB43CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMB43CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMB43CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMB series TVS diode, Type Zener, Bidirectional, 1.5SMB43CA, DO-214AA SMB, 1500W peak pulse power, 36.8V reverse standoff, 76.6V clamping.","salesMarkdown":"## What the 1500 W peak pulse rating means for a telecom line card The 1.5SMB43CA: The 1500 W rating means the device can absorb a single surge event of that energy without failing — critical for protecting sensitive ICs on telecom line cards where lightning-induced transients are a known risk. ## Bidirectional protection in a single DO-214AA package A single 1.5SMB43CA provides bidirectional clamping across one channel, meaning it protects signal lines that swing both positive and negative relative to ground — common in telecom ring signals or RS-485 buses. The DO-214AA (SMB) package is a standard surface-mount footprint that reflows alongside other SMD passives, keeping the bill of materials simple. ## Temperature range and board-level reliability The device operates across -65°C to 150°C junction temperature, covering the full industrial and telecom ambient range with margin.","metaTitle":"Littelfuse 1.5SMB43CA TVS Diode, 1.5kW, 36.8V Standoff","metaDescription":"Active Littelfuse 1.5SMB43CA bidirectional TVS diode, 1500W peak pulse power, 36.8V reverse standoff, DO-214AA. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5SMB","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMB","Operating Temperature":"-65°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AA (SMBJ)","Voltage - Breakdown (Min)":"40.9V","Voltage - Clamping (Max) @ Ipp":"76.6V","Voltage - Reverse Standoff (Typ)":"36.8V","Current - Peak Pulse (10/1000µs)":"140.8A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/81b90dfb07fef606df152b0bf1427329.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5SMB43CA come in?","answer":"It is available in Tape & Reel (TR) and Cut Tape (CT) options."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMB43CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMB43CA 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}}