{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMB68A","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMB68A","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMB68A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMB68A","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMB Series Zener TVS Diode, 1.5SMB68A, 1500W Peak Pulse Power, 58.1V Reverse Standoff, 64.6V Breakdown, 118.9V Clamping, DO-214AA (SMB), Surface Mount.","salesMarkdown":"## What the 1500W peak pulse rating means for your protection design The 1.5SMB68A is a 1500W (1.5kW) peak pulse power TVS diode from Littelfuse's 1.5SMB series, designed to clamp transients on telecom and industrial DC rails. For a 58.1V reverse standoff voltage (the DC rail it protects without conducting), the 64.6V minimum breakdown ensures the avalanche region is entered only when the transient exceeds the normal operating voltage. The 118.9V clamping ceiling limits the spike seen by the downstream circuitry. ## Package and board-fit for the DO-214AA SMB Housed in the DO-214AA (SMB) package, the 1.5SMB68A is a surface-mount device that reflows alongside standard passive components. The supplier device package is also listed as DO-214AA (SMBJ), so the footprint is consistent across the 1.5SMB family. Operating temperature spans -65°C to 150°C junction, covering the full telecom ambient range with margin. It is a unidirectional Zener TVS — one channel, cathode banded — suitable for positive-rail clamping where the transient polarity is known. Power line protection is not supported (the diode is not bidirectional), so for AC signal lines or bipolar rails a bidirectional variant from the same series would be needed. ## Active lifecycle and sourcing posture The base product number 1.5SMB covers the full family, so the 68A variant remains a standard catalogue item.","metaTitle":"Littelfuse 1.5SMB68A TVS Diode, 1500W, DO-214AA","metaDescription":"Littelfuse 1.5SMB68A Zener TVS diode, 1500W peak pulse power, 58.1V standoff, DO-214AA SMB. Active production, sourced per 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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AA (SMBJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"118.9V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"90.8A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/81b90dfb07fef606df152b0bf1427329.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the 1.5SMB68A suitable for protecting a 48V telecom rail?","answer":"Yes. The 58.1V reverse standoff voltage is above a nominal 48V rail, so the diode does not conduct during normal operation. The 64.6V minimum breakdown triggers avalanche clamping before the rail exceeds the downstream component ratings."},{"question":"What package does the 1.5SMB68A come in, and is it RoHS compliant?","answer":"RoHS compliance is standard for Littelfuse's 1.5SMB series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMB68A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMB68A 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}}