{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ20A-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ20A-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ20A-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ20A-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS diode, 1.5SMCJ20A-AQ, unidirectional, 20V standoff, 32.4V clamping, 46.3A peak pulse (10/1000µs), 1500W peak pulse power, DO-214AB (SMC), surface mount, strip, automotive.","salesMarkdown":"## What the 20V standoff and 32.4V clamping mean for the board The 1.5SMCJ20A-AQ is a unidirectional Zener-type TVS designed for automotive board-level protection — it sits across a rail and clamps transients once the standoff voltage is exceeded. ## Junction thermal rating and automotive temperature exposure Maximum junction temperature is 150 °C (TJ) — this sits at the upper end of the automotive Grade 1 range (-40 to 125 °C ambient), leaving the typical 25 °C delta as headroom for transient thermal rise during a clamping event. At the 46.3 A peak pulse the instantaneous dissipation is roughly 1.5 kW; the datasheet thermal impedance is what governs whether the TJ limit is breached on a repetitive surge sequence, so check the I²t and thermal derating curves if the board sees burst transients. ## SMC package, strip packaging, and automotive assembly context The SMC (DO-214AB) is the mid-size automotive TVS footprint — larger than the SMA (DO-214AC) and smaller than the SMB (DO-214AA), which determines the available land pattern and pad area on a typical ECU board. Supplied in strip format for pick-and-place; the exposed pad on the cathode side requires adequate solder wetting to manage thermal dissipation from the junction through the lead frame to the board copper.","metaTitle":"1.5SMCJ20A-AQ Zener TVS Diode, 20V, SMC","metaDescription":"Diotec 1.5SMCJ20A-AQ unidirectional Zener TVS, 20V standoff, 32.4V clamping, 46.3A peak pulse, DO-214AB SMC. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diotec Semiconductor","Type":"Zener","Series":"-","Package":"Strip","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-50°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"22.2V","Voltage - Clamping (Max) @ Ipp":"32.4V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"46.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9260","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ20A-AQ/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1.5SMCJ20A-AQ and request a quote?","answer":"Sourced through independent distribution as an active Diotec Semiconductor part."},{"question":"What package type is the 1.5SMCJ20A-AQ supplied in?","answer":"Diotec lists it in Strip packaging, meaning cut-tape for loose-piece pick-and-place rather than a full reel. The SMC/DO-214AB surface-mount package is confirmed in the spec record."},{"question":"Is the 1.5SMCJ20A-AQ a standard Zener diode or a TVS specifically?","answer":"It is a Zener-type TVS (Transient Voltage Suppressor) — a unidirectional clamping device optimised for surge protection rather than voltage regulation. The 10/1000 µs peak pulse rating of 46.3 A and 1500 W peak power distinguish it from a general-purpose Zener used for reference or regulation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ20A-AQ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ20A-AQ 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}}