{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ12AE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ12AE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ12AE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ12AE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ12AE3/TR13, Zener TVS diode, 12V reverse standoff, 13.3V min breakdown, 19.9V clamp at 25.1A, 500W peak pulse, DO-214AC (SMA), -65°C~150°C junction, Active.","salesMarkdown":"## 12V rail protection in a hand-solderable SMA package Its 12V reverse standoff voltage means the line runs at 12V without leakage; once the voltage exceeds 13.3V the device avalanches and holds the clamp at 19.9V while shunting 25.1A of peak pulse current. The 500W peak pulse power rating tells you how much surge energy it can absorb in the standard 10/1000µs waveform — enough for most industrial and automotive transients. The DO-214AC (SMA) package is a common footprint that hand-solders easily with a fine iron; no hot-air rework needed. ## Sizing the clamp for your 12V bus The 19.9V clamping voltage sets the upper limit the protected IC sees. If your downstream part is rated for, say, 20V absolute max, this TVS leaves only 0.1V of headroom — marginal. A 12V-rated part with a higher clamp (e.g. 24V) would give more margin but might not trigger early enough. The 25.1A peak pulse current assumes the 10/1000µs waveform; shorter pulses (like 8/20µs) allow higher current, but the datasheet's derating curve is the final word. For a 12V rail in a 24V truck system, the 13.3V min breakdown ensures the TVS doesn't conduct during normal operation. Microchip lists the SMAJ12AE3/TR13 as Active. No end-of-life notice, no last-time-buy deadline. Cut Tape (CT) is also available for small-batch builds.","metaTitle":"SMAJ12AE3/TR13 TVS Diode – 12V, 500W, DO-214AC, Active","metaDescription":"Microchip SMAJ12AE3/TR13 Zener TVS diode: 12V reverse standoff, 19.9V clamp, 500W peak pulse, DO-214AC (SMA). Active lifecycle. Sourced per RFQ.","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); 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":"500W","Base Product Number":"SMAJ12","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AC (SMA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"13.3V","Voltage - Clamping (Max) @ Ipp":"19.9V","Voltage - Reverse Standoff (Typ)":"12V","Current - Peak Pulse (10/1000µs)":"25.1A"}},"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":"What is the closest pin-compatible alternative to SMAJ12AE3/TR13?","answer":"Within Microchip's SMAJ family, the SMAJ12A (without the suffix) is electrically identical — same 12V standoff, same 500W rating — but lacks the RoHS-compliance designation. The package (DO-214AC) and footprint are identical. For a different brand, Littelfuse's SMAJ12A in the same DO-214AC package is a direct cross; verify the breakdown voltage tolerance matches your spec."},{"question":"Is SMAJ12AE3/TR13 RoHS compliant?","answer":"The suffix in the order code indicates Microchip's RoHS-compliant and halogen-free finish. No separate certificate is needed for standard procurement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ12AE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ12AE3-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}}