{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ70AE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMBJ70AE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMBJ70AE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMBJ70AE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMBJ70AE3/TR13 — unidirectional Zener TVS diode, 70V reverse standoff, 113V clamping, 600W peak pulse power, DO-214AA (SMB) package, Tape & Reel.","salesMarkdown":"## 70V rail clamp — unidirectional, one channel Its 70V reverse standoff voltage means it sits across a 70V DC rail and stays off until a transient pushes past the 77.8V minimum breakdown. When it fires, the clamp holds at 113V maximum while shunting 5.3A of peak pulse current in the 10/1000µs waveform. ## DO-214AA (SMB) — surface-mount, field-swappable with hot air Housed in a DO-214AA (SMB) package, this is a two-terminal surface-mount part. Polarity is marked on the body — cathode band toward the positive rail for unidirectional clamping. You can swap it on site with a hot-air station; the SMB footprint is common enough that the pad layout matches many standard TVS diodes in this power class. No special handling beyond normal ESD precautions. Microchip lists the SMBJ70AE3/TR13 as Active. The base product number is SMBJ70; the 'AE3' suffix indicates the unidirectional version with the standard Microchip screening level. This covers military-grade cold and hot environments — avionics bays, outdoor telecom cabinets, engine compartments. The wide range does not derate the peak pulse power; the 600W rating holds across the full temperature band unless the datasheet derating curve says otherwise.","metaTitle":"SMBJ70AE3/TR13 TVS Diode – 70V Unidirectional, 600W","metaDescription":"Microchip SMBJ70AE3/TR13: unidirectional Zener TVS, 70V reverse standoff, 113V clamp, 600W peak pulse, DO-214AA (SMB). Active production. 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)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ70","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMBJ (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"77.8V","Voltage - Clamping (Max) @ Ipp":"113V","Voltage - Reverse Standoff (Typ)":"70V","Current - Peak Pulse (10/1000µs)":"5.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2850","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f566c62ad8bf6be9ecf452f6999d0b7a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SMBJ70AE3/TR13 a unidirectional or bidirectional TVS diode?","answer":"Unidirectional — one channel, Zener type. The cathode band on the DO-214AA body marks the positive side. Use it on a single-polarity rail; it will not clamp negative transients below ground."},{"question":"What is the peak pulse power rating of SMBJ70AE3/TR13?","answer":"600W peak pulse power measured with a 10/1000µs waveform. That is the energy it can absorb in a single surge event before the junction overheats."},{"question":"Can SMBJ70AE3/TR13 protect a 70V DC power rail?","answer":"Yes. The reverse standoff voltage is 70V, so it sits across the rail without conducting during normal operation. Breakdown starts at 77.8V minimum, and the clamp holds at 113V max. That gives you a 7.8V margin above the nominal rail before the diode starts to leak."},{"question":"What is the difference between SMBJ70A and SMBJ70AE3?","answer":"The '' suffix on the SMBJ70AE3/TR13 indicates a specific Microchip screening or testing level — typically the standard production flow. The SMBJ70A (without) may be the base commercial variant. Both are unidirectional, same electrical specs (70V standoff, 600W). The version is what Microchip ships as the default active part."},{"question":"Can SMBJ70AE3/TR13 be used for reverse polarity protection?","answer":"Not directly. This is a unidirectional TVS — it clamps only in the forward (reverse-breakdown) direction. For reverse polarity protection you need a series diode or a P-channel MOSFET. The TVS can sit after the polarity protection to clamp transients on the protected rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMBJ70AE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMBJ70AE3-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}}