{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ26","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ26","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ26","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ26","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, Zener-type unidirectional TVS diode, 26V reverse standoff, 1500W peak pulse, 32.2A peak pulse current, DO-214AB SMC package, surface mount, -50°C to 150°C Tj operating range.","salesMarkdown":"## What 26V standoff means for the clamp decision The 1.5SMCJ26 is a unidirectional Zener-type TVS diode — it sits idle above 26V reverse standoff, then switches into conduction once the transient pushes the line above 28.9V minimum breakdown. At that point it clamps the voltage to a maximum of 46.6V at the 32.2A peak pulse rating, protecting whatever runs downstream of it. The 26V standoff figure is the selection anchor: the protected rail must operate below it under normal conditions so the TVS stays silent until a surge arrives. Faster, sharper transients (ESD human-body model at <100 ns) carry less energy and stay within the diode's repetitive peak capability; slower, higher-energy surges (lightning or inductive kick) consume more of that 1500W margin and drive the clamping voltage up the IV curve. ## DO-214AB SMC — footprint and sourcing reach The SMC (DO-214AB) package is the standard industry footprint for 1.5kW TVS families across multiple manufacturers. The cathode band marks the polarity — unidirectional only, so one direction of surge is protected. The strip packaging format is typical for OEM reel orders; quantities and lead time are confirmed against the RFQ. Operating junction temperature runs from -50°C to 150°C — the upper bound is the thermal trip point for the clamping junction. In a confined enclosure with poor thermal coupling to the PCB pad, the peak pulse duty cycle matters: the diode absorbs transient energy and self-heats; repeated pulses without sufficient recovery time push Tj toward the 150°C ceiling. Board-level thermal relief through the cathode tab is the expected design path.","metaTitle":"Diotec 1.5SMCJ26 TVS Diode, 26V standoff, 1500W peak","metaDescription":"Diotec 1.5SMCJ26 unidirectional TVS diode, 26V reverse standoff, 1500W peak pulse, DO-214AB SMC. Active production — quoted to order on RFQ.","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":"General Purpose","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)":"28.9V","Voltage - Clamping (Max) @ Ipp":"46.6V","Voltage - Reverse Standoff (Typ)":"26V","Current - Peak Pulse (10/1000µs)":"32.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9158","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ26/alternatives.json"},"ai":{"faq":[{"question":"What package does 1.5SMCJ26 use — and will it match other 1.5kW TVS footprints?","answer":"The 1.5SMCJ26 ships in the DO-214AB (SMC) surface-mount package. The SMC foot pattern is pin-compatible across 1.5kW unidirectional TVS families from multiple brands, so a board already routed for this footprint can accept a second-source equivalent without a layout spin — confirm the standoff and clamping ratings against the BOM line before substituting."},{"question":"What is 1.5SMCJ26's listed type, and does it protect both polarities?","answer":"The part is a unidirectional Zener-type TVS. One direction of the surge is clamped; the reverse polarity is protected by the Zener avalanche characteristic. For bi-directional protection a different TVS variant would be required — the single unidirectional channel on this part does not provide that."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ26","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ26 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}}