{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ12","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ12","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ12","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ12","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener unidirectional TVS diode, 1.5SMCJ12, 1500 W peak pulse, 12 V standoff (typ), 13.3 V breakdown min, 22 V clamping max @ 68.2 A, DO-214AB (SMC) surface-mount, -50°C~150°C junction.","salesMarkdown":"## Clamping voltage and the downstream circuit The 1.5SMCJ12: With 1500 W peak pulse power rating, the diode absorbs the transient energy without failing, keeping the rail within the downstream IC's absolute-maximum rating. ## Standoff and breakdown — the protection window The 12 V typical reverse standoff voltage is where the TVS sits quietly in normal operation, drawing only leakage current and leaving the protected rail unobstructed. The 13.3 V minimum breakdown threshold keeps the diode inactive through normal 12 V rail tolerances — it only transitions into conduction when a transient exceeds the standoff. This window between 12 V and 13.3 V is deliberate: it maximises protection headroom while avoiding false triggering on supply ripple or motor transients that sit just below the breakdown floor. ## Junction temperature range The Tj rating is the operative limit — the 150 °C ceiling constrains the continuous dissipation you can run at without derating, and the clamping voltage temperature coefficient shifts the breakdown point upward as the junction heats, so a hot board clamps at a slightly higher voltage than the 25 °C datasheet figure. ## Package and board fit The DO-214AB (SMC) package is the standard surface-mount footprint for 1500 W bidirectional and unidirectional TVS diodes across multiple brands — the land pattern is compatible across Diotec, Littelfuse, Bourns, and EPCOS families. The strip packaging option is typical for prototype quantities or loose-reel kitting; confirm the reeled option if you are populating by automated pick-and-place. No directional polarity marking beyond the cathode bar on the package face — the unidirectional polarity is fixed and must match the board schematic or the protected rail sees reverse-bias during normal operation.","metaTitle":"Diotec 1.5SMCJ12 TVS Diode, 1500W, 22V Clamping","metaDescription":"Diotec 1.5SMCJ12 unidirectional TVS diode, 1500 W peak pulse, 22 V max clamping @ 68.2 A, -50 to 150 °C Tj. Active production — quoted 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":"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)":"13.3V","Voltage - Clamping (Max) @ Ipp":"22V","Voltage - Reverse Standoff (Typ)":"12V","Current - Peak Pulse (10/1000µs)":"68.2A"}},"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/1.5SMCJ12/alternatives.json"},"ai":{"faq":[{"question":"Is there a pin-compatible alternative to the 1.5SMCJ12 in this TVS family?","answer":"No cross-compatible successor or second-source alternative is cited in the current record for this specific order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ12","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ12 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}}