{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ18CAE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ18CAE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ18CAE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ18CAE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ18CAE3/TR13, Zener TVS Diode, 18V Reverse Standoff, 29.2V Clamping, 500W Peak Pulse Power, DO-214AC (SMA), Tape & Reel, Active","salesMarkdown":"With a reverse standoff voltage of 18V and a maximum clamping voltage of 29.2V at 17.2A peak pulse current, it protects downstream circuitry from surges up to 500W peak pulse power. The bidirectional configuration means a single device guards both polarities on a signal or power line, simplifying BOM count on AC-coupled or bipolar interfaces. Rated for junction temperatures from -65°C to 150°C, this part handles the thermal extremes found in outdoor telecom cabinets, automotive underhood modules, and industrial control enclosures. The wide range also provides margin when the TVS self-heats during repetitive surge events — the 150°C ceiling is the absolute limit, not a continuous operating target. Supplied in a DO-214AC (SMA) surface-mount package on Tape & Reel, the SMAJ18CAE3/TR13 is ready for automated pick-and-place and reflow assembly. The SMA footprint is a common industry standard, so no board redesign is needed when substituting between TVS vendors in this package. For BOM planning, this removes the obsolescence risk that haunts older TVS families.","metaTitle":"SMAJ18CAE3/TR13 Microchip Zener TVS Diode 18V 500W DO-214AC","metaDescription":"SMAJ18CAE3/TR13 Zener TVS diode from Microchip Technology. 18V reverse standoff, 29.2V clamping, 500W peak pulse power. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Microchip Technology","Type":"Zener","Series":"-","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"SMAJ18","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AC (SMA)","Voltage - Breakdown (Min)":"20V","Voltage - Clamping (Max) @ Ipp":"29.2V","Voltage - Reverse Standoff (Typ)":"18V","Current - Peak Pulse (10/1000µs)":"17.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ddece4863b4621debe180df56adc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the SMAJ18CAE3/TR13 bidirectional or unidirectional?","answer":"It is a single-channel bidirectional device. Both polarities are clamped symmetrically, making it suitable for protecting AC signal lines or DC rails where reverse-voltage events are possible."},{"question":"What is the closest pin-compatible alternative to the SMAJ18CAE3/TR13?","answer":"Within Microchip's SMAJ family, the SMAJ18CA (non- suffix) shares the same electrical ratings and DO-214AC package but may lack the higher reliability screening of the version. For a direct drop-in from another brand, look for an 18V bidirectional TVS in SMA with 500W peak pulse power — many suppliers offer this standard rating. Confirm the clamping voltage and breakdown tolerance match your design margin before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ18CAE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ18CAE3-TR13 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}}