{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ120CA","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ120CA","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ120CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ120CA","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS diode, 1.5SMCJ120CA, 120V reverse standoff, 1.5kW peak pulse, bidirectional, DO-214AB SMC package, -50°C to 150°C junction.","salesMarkdown":"## What the 120V standoff and 1.5kW rating mean for the protection circuit The 1.5SMCJ120CA is a bidirectional Zener-based TVS diode — the 'CA' suffix confirms it clamps both polarities, which matters for AC rails and any line where the protected node can swing negative during a transient event. No power-line protection flag means this part is not UL recognized as a dedicated mains-protection device; for a 120 V AC line, confirm the applicable standard and whether the part meets the required creepage and clearance before specifying it in a mains-referenced position. ## DO-214AB package and what the datasheet confirms about board assembly SMC (DO-214AB) is the mid-size surface-mount TVS package — smaller than the P600 axial but larger than the SMA/SMB footprint, which puts it in the sweet spot for 1.5–3 kW TVS diodes where thermal pad area drives the clamping performance. The strip packaging listing tells you it ships as cut tape or ammpack orientation; reel quantity and exact lead-free/RoHS plating finish are confirmed from the published datasheet rather than inferred. Solder joint reliability on the SMC is well-characterized in the IPC/JEDEC standards — a standard lead-free reflow profile lands the cathode band orientation correctly, and the flat back body sits flush against the PCB plane with adequate paste coverage under the die attach pad.","metaTitle":"Diotec 1.5SMCJ120CA TVS Diode, 120V, 1.5kW, SMC","metaDescription":"Diotec 1.5SMCJ120CA bidirectional TVS diode, 120V standoff, 1500W peak pulse, DO-214AB/SMC package.","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"133V","Voltage - Clamping (Max) @ Ipp":"193V","Voltage - Reverse Standoff (Typ)":"120V","Current - Peak Pulse (10/1000µs)":"7.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8068","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ120CA/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between a 1.5SMCJ and a P6SMB or SMBJ series TVS diode of the same standoff voltage?","answer":"The three series share the same DO-214AB package and bidirectional 'CA' variant, but differ in peak pulse power rating — the 1.5SMCJ is rated at 1.5 kW versus 600 W for the SMBJ series and 3 kW for the P6SMB. If your board layout already has a DO-214AB footprint and the clamping voltage at the required surge current fits the IEC 61000-4-5 level you need to pass, stepping up or down in power rating is a layout-compatible choice; the standoff voltage and breakdown band are similar across the series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ120CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ120CA 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}}