{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMB75CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMB75CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMB75CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMB75CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMB series, TVS Diode, Zener, Bidirectional, 1 Channel, DO-214AA, SMB, 1500W, 1.5SMB75CA.","salesMarkdown":"## 1.5kW surge protection for telecom and industrial DC rails The Littelfuse 1.5SMB75CA is a 1500W bidirectional TVS diode in the DO-214AA (SMB) surface-mount package. It clamps transients on a 64.1V nominal DC rail — typical for telecom rectifiers, 48V battery-backed systems, and industrial control power supplies where a single bidirectional device replaces two unidirectional TVS diodes in series. The 133.1V clamping voltage ensures downstream DC-DC converters and ASICs stay within their absolute-maximum ratings during a surge event. ## Breakdown and clamping thresholds The reverse standoff voltage is 64.1V — the device draws negligible leakage below this level. This 2:1 clamping ratio is typical for Zener-type TVS diodes in this power class. Bidirectional configuration means the 1.5SMB75CA protects both positive and negative transients with a single component — useful on signal lines or power rails that swing relative to ground. The single channel covers both polarities, saving placement cost and PCB area compared to a back-to-back unipolar pair. Operating temperature spans -65°C to 150°C junction, covering military/aerospace cold-soak and under-hood automotive hot-spot conditions. ## Active production — no EOL concerns It is a current-production part available through authorized distribution and independent channels. No successor or cross-reference is needed; the part is the standard offering for this voltage and power class.","metaTitle":"1.5SMB75CA Littelfuse TVS Diode, 1500W, DO-214AA","metaDescription":"Littelfuse 1.5SMB75CA bidirectional TVS diode, 1500W peak pulse power, 64.1V standoff, DO-214AA (SMB). 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","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","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)":"71.3V","Voltage - Clamping (Max) @ Ipp":"133.1V","Voltage - Reverse Standoff (Typ)":"64.1V","Current - Peak Pulse (10/1000µs)":"81.4A (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 is the peak pulse power rating of 1.5SMB75CA?","answer":"At the 8/20µs waveform, the peak pulse current is 81.4A. The clamping voltage at that current is 133.1V maximum."},{"question":"What package does the 1.5SMB75CA use?","answer":"DO-214AA (SMB) surface-mount package, also referred to as SMBJ. It is a standard footprint shared across the 1.5SMB series, rated for surface-mount reflow soldering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMB75CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMB75CA 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}}