{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ40A-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ40A-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ40A-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMAJ40A-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ40A-13-F Zener TVS diode, 400W peak pulse power, 40V reverse standoff, 64.5V clamping, DO-214AC (SMA) surface mount package, Tape & Reel.","salesMarkdown":"## What the 400 W peak pulse rating means for your protection design The SMAJ40A-13-F: That 400 W figure is the product of the clamping voltage and the peak pulse current — at the 64.5 V clamp, the device handles 6.2 A of surge current before the junction exceeds its thermal limit. For a 40 V rail, the 44.4 V minimum breakdown ensures the diode stays off during normal operation and only conducts when a transient pushes the line above that threshold. ## Package and board-fit: DO-214AC (SMA) surface mount The DO-214AC (SMA) package is a standard surface-mount footprint with a 2.6 mm body width and 4.3 mm length. The SMAJ40A-13-F ships in Tape & Reel (TR) or Cut Tape (CT) — the -13-F suffix indicates the reel quantity and lead-free finish. The SMA footprint is shared across the entire SMAJ40 family, so a single PCB pad layout serves the 5 V through 170 V variants without a board spin.","metaTitle":"SMAJ40A-13-F Diodes Inc TVS Diode, 400W, DO-214AC","metaDescription":"SMAJ40A-13-F Zener TVS diode, 400W peak pulse power, 40V standoff, 64.5V clamp. Active production. DO-214AC (SMA) surface mount. Order via RFQ.","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","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ40","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"64.5V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"6.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0270111b098582f24c0b7d28e81a77ac.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ40A-13-F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMAJ40A-13-F 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}}