{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMB23A","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMB23A","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMB23A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMB23A","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMB Series Zener TVS Diode, 1.5SMB23A, 1500W Peak Pulse Power, 20V Reverse Standoff, 33.2V Clamping, DO-214AA (SMB) Package, Surface Mount.","salesMarkdown":"## Breakdown and clamping window The 1.5SMB23A: The reverse standoff voltage is 20 V — the diode draws negligible leakage below this level, so the protected rail sees no loading during normal operation. Breakdown occurs between 22 V minimum and the clamping ceiling of 33.2 V at full surge current. That 11 V window between breakdown and clamp gives the designer margin to absorb transients without the TVS conducting during nominal voltage ripple. The single unidirectional channel means the cathode is tied to the protected rail and the anode to ground — reverse-polarity protection requires a second device or a series diode upstream. ## Package and board integration The junction operates from -65°C to 150°C, covering the full industrial temperature envelope with margin for self-heating during repetitive surge events. Power line protection is not provided — this part is a Zener TVS, not a crowbar or polyswitch, so it clamps rather than latches. For AC mains or high-energy DC bus protection, a different topology is needed.","metaTitle":"Littelfuse 1.5SMB23A TVS Diode, 1500W, 20V Standoff","metaDescription":"Littelfuse 1.5SMB23A Zener TVS diode, 1500W peak pulse power, 20V reverse standoff, 33.2V clamping. Active production, DO-214AA (SMB) package. Sourced 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":"1.5SMB","Package":"Tape & Reel (TR)","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)":"22V","Voltage - Clamping (Max) @ Ipp":"33.2V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"45A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2308","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/81b90dfb07fef606df152b0bf1427329.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMB23A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMB23A 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}}