{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ43A-13","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ43A-13","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ43A-13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ43A-13","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ43A-13 Zener TVS diode, unidirectional, 43V reverse standoff, 400W peak pulse power, DO-214AC (SMA) surface-mount package, -55°C to 150°C operation.","salesMarkdown":"## Voltage ratings and clamping behaviour The SMAJ43A-13: Breakdown occurs at a minimum of 47.8 V, and the clamping voltage at peak pulse current is 69.4 V. This voltage stack defines the protection window: the protected rail stays below 43 V during normal operation, the diode begins conducting above 47.8 V, and the clamp limits transients to 69.4 V — the voltage the downstream circuitry must survive. The 400 W rating is the product of clamp voltage and peak current — the energy capability scales with pulse duration, so shorter spikes (8/20 µs) allow higher peak current before the junction temperature limit is reached. ## Package and board integration Housed in the DO-214AC (SMA) package, with the supplier device package also designated SMA. The operating junction temperature range spans -55°C to 150°C, covering the full industrial and automotive ambient envelope. Power derating above 25°C follows the linear derating curve typical of SMA-packaged TVS diodes — at 150°C the rated peak pulse power drops to zero. Listed as Active in production by Diodes Incorporated. Sourced through independent distribution channels.","metaTitle":"SMAJ43A-13 TVS Diode, 43V Standoff, 400W Peak Pulse","metaDescription":"SMAJ43A-13 unidirectional TVS from Diodes Inc, 43V reverse standoff, 69.4V clamp, 400W peak pulse. Active production, surface-mount DO-214AC package.","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":"SMAJ43","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"47.8V","Voltage - Clamping (Max) @ Ipp":"69.4V","Voltage - Reverse Standoff (Typ)":"43V","Current - Peak Pulse (10/1000µs)":"5.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6e414533ed6f0f7c15ae6d19d66ae3c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does SMAJ43A-13 come in?","answer":"The SMAJ43A-13 is supplied in the DO-214AC (SMA) surface-mount package. It is available in Tape & Reel (TR) or Cut Tape (CT) options."},{"question":"Where can I buy SMAJ43A-13 and get a price?","answer":"The SMAJ43A-13 is sourced through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ43A-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/SMAJ43A-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}}