{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ40CAE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMCJ40CAE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMCJ40CAE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMCJ40CAE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMCJ40CAE3/TR13, Zener TVS Diode, Bidirectional, 40V Reverse Standoff, 64.5V Clamping, 1500W Peak Pulse, DO-214AB (SMC) Surface Mount, Tape & Reel","salesMarkdown":"## 40V Bidirectional TVS in DO-214AB – Surge Protection for 24V Rails and Signal Lines The SMCJ40CAE3/TR13 is a bidirectional Zener TVS diode from Microchip Technology, rated for 1500 W peak pulse power (10/1000 µs waveform) with a reverse standoff voltage of 40 V. The 64.5 V clamping voltage at 23.2 A peak pulse current defines the upper voltage the protected circuit sees during a surge — important when the downstream silicon has a 60 V absolute maximum rating. The single bidirectional channel clamps both polarities, so one device replaces two unidirectional TVS diodes in anti-series on AC or bipolar signal lines. ## Clamping Voltage and Peak Current – Matching the TVS to the Protected Rail The 40 V reverse standoff is the maximum continuous DC voltage the TVS will not conduct at; for a nominal 24 V DC rail this provides healthy margin, but a 48 V rail exceeds it and the device would leak. The minimum breakdown voltage is 44.4 V, so the TVS starts clamping just above the standoff. The clamping voltage of 64.5 V at 23.2 A peak pulse current is the worst-case voltage the load sees — verify this stays below the absolute maximum rating of the protected ICs. For a 24 V system the margin is generous; for a 36 V rail the 64.5 V clamp may stress 40 V-rated parts. ## Active Production – No End-of-Life Risk for Current BOMs Sourced to order against the RFQ quantity — no stock-holding claim, but the active status means no last-time-buy pressure. ## Temperature Range and Package – Suitability for Harsh Environments","metaTitle":"SMCJ40CAE3/TR13 TVS Diode – 40V Bidirectional","metaDescription":"Microchip Technology SMCJ40CAE3/TR13 Zener TVS, 1500W peak pulse power, 40V reverse standoff, bidirectional, DO-214AB SMC package.","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-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SMCJ40","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"64.5V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"23.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8250","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between SMCJ40CA and SMCJ40CAE3?","answer":"The SMCJ40CAE3 suffix '' indicates Microchip Technology's lead-free / RoHS-compliant plating finish. The SMCJ40CA (without) is the tin-lead version. Both share the same electrical ratings: 40 V reverse standoff, 64.5 V clamping, 1500 W peak pulse. The variant is the current standard for RoHS-compliant assembly lines."},{"question":"Can SMCJ40CAE3/TR13 be used for 24V systems?","answer":"Yes. The 40 V reverse standoff is well above a nominal 24 V DC rail, so the TVS will not conduct during normal operation. The 64.5 V clamping voltage provides a comfortable margin below the typical 60 V absolute maximum rating of 24 V-rated downstream ICs. For a 24 V AC signal line, the bidirectional channel clamps both polarities with a single device."},{"question":"What is the closest pin-compatible alternative to SMCJ40CAE3/TR13 in this Circuit Protection family?","answer":"Within the SMCJ family, the SMCJ40A (unidirectional) and SMCJ40CA (bidirectional, tin-lead) share the same DO-214AB (SMC) footprint and the same 40 V standoff / 1500 W ratings. The SMCJ40CAE3/TR13 is the RoHS-compliant bidirectional variant. If you need a different standoff voltage, the SMCJ series covers 5 V to 170 V in the same package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMCJ40CAE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMCJ40CAE3-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}}