{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ120A-13","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ120A-13","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ120A-13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ120A-13","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ120A-13 TVS Zener Diode, 400W Peak Pulse, 120V Reverse Standoff, 133V Breakdown, 193V Clamp, 2A Ipp, Unidirectional, DO-214AC SMA, Surface Mount.","salesMarkdown":"## Clamping voltage and the protection window The SMAJ120A-13: When it does fire, the clamping voltage holds at 193 V maximum at the 2 A peak pulse current (10/1000 µs waveform). That 193 V ceiling is the number that matters for downstream silicon — if the bus voltage never exceeds 120 V in normal operation, the 133 V breakdown gives enough margin to avoid nuisance triggering from normal line ripple or switching noise. ## DO-214AC SMA footprint and board integration Housed in the standard DO-214AC (SMA) package, this TVS mounts directly on the PCB with a surface-mount reflow profile compatible with lead-free soldering. The SMA footprint is shared across the wider SMAJ family, so a single board layout can accommodate different voltage variants by populating the appropriate order code. ## Sourcing and compliance The SMAJ120A-13 is a general-purpose TVS diode with no integrated power-line protection features — it is designed for signal and low-power rail clamping, not for mains or high-energy surge suppression. RoHS compliance is standard for the Diodes Incorporated SMAJ series.","metaTitle":"SMAJ120A-13 TVS Diode, 120V Standoff, 193V Clamp, DO-214AC","metaDescription":"SMAJ120A-13 from Diodes Inc. Active 400W unidirectional TVS. 120V reverse standoff, 133V breakdown, 193V clamp at 2A. DO-214AC SMA package. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ120","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"133V","Voltage - Clamping (Max) @ Ipp":"193V","Voltage - Reverse Standoff (Typ)":"120V","Current - Peak Pulse (10/1000µs)":"2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6e414533ed6f0f7c15ae6d19d66ae3c.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ120A-13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMAJ120A-13 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}}