{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMB20CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMB20CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMB20CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMB20CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMB Series Zener TVS Diode, 1.5SMB20CA, Bidirectional, 1500W Peak Pulse, 27.7V Clamp, DO-214AA (SMB), Surface Mount, Tape & Reel.","salesMarkdown":"## Transient suppression for 17.1V rails The 1.5SMB20CA: The single bidirectional channel protects both polarities on a signal line, which is typical for telecom line-side transient protection where the pair sees both positive and negative surges relative to ground. ## Peak pulse current and clamping margin With a peak pulse current of 54.9A at the 10/1000µs test waveform, the 1.5SMB20CA can absorb a substantial surge before the clamping voltage rises above 27.7V. The 19V minimum breakdown voltage gives a 1.9V guard band above the 17.1V standoff — enough to accommodate normal ripple and DC bias without nuisance clamping. The DO-214AA (SMB) surface-mount package keeps the thermal path short to the PCB copper pad, which is critical for dissipating the 1500W pulse without exceeding the -65°C to 150°C junction temperature range.","metaTitle":"Littelfuse 1.5SMB20CA TVS Diode, 1500W, 27.7V Clamp","metaDescription":"Littelfuse 1.5SMB20CA bidirectional Zener TVS diode, 1500W peak pulse, 27.7V clamping, DO-214AA. Active production, 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AA (SMBJ)","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2635","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/1.5SMB20CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMB20CA 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}}