{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ150A","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ150A","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ150A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ150A","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS diode, 1.5SMCJ150A, 150V reverse standoff, 1.5kW peak pulse power, 243V clamping @ 6.2A, DO-214AB SMC surface-mount package, -50°C to 150°C junction.","salesMarkdown":"## 150V standoff, 1.5kW peak pulse — the clamping energy budget The 1.5SMCJ150A: The 1.5 kW peak pulse power rating names the clamping energy the diode can absorb without damage — for a 24V rail this gives comfortable headroom; for a 48V rail the clamping ratio sits closer to the transient event, so verify the transient amplitude against the clamping curve before committing. Unidirectional operation means it clamps one polarity — use the bidirectional variant (1.5SMCJ150CA) if the line floats or sees AC. Power line protection is not designated on this part, so it is suited for signal-line and secondary rail clamping rather than primary AC mains protection. ## SMC package — PCB layout and thermal pad The DO-214AB SMC package follows the industry-standard 6.5 × 5.9 mm body and 1.25 mm seated height — the same footprint as the Littelfuse SMCJ and onsemi SMBJ families, which means a footprint-compatible cross-reference is often available if supply tightens. The cathode bar marks polarity on the tape; the anode pad connects to the protected rail ground. Thermal pad design follows the datasheet land pattern — the solder-mask-defined pad under the cathode tab controls RthJC and keeps junction temperature within the 150°C ceiling at rated peak pulse. Operating junction temperature runs from -50°C to 150°C — this covers the full industrial ambient band, so a thermal relief pad and adequate copper area on the board will keep the diode within its rated thermal margin in enclosed equipment without active cooling.","metaTitle":"1.5SMCJ150A TVS Diode, 150V, 1.5kW, SMC","metaDescription":"Diotec 1.5SMCJ150A unidirectional Zener TVS diode, 150V standoff, 243V clamping, 6.2A peak pulse, 1.5kW peak power, DO-214AB SMC package. Active. 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)":"167V","Voltage - Clamping (Max) @ Ipp":"243V","Voltage - Reverse Standoff (Typ)":"150V","Current - Peak Pulse (10/1000µs)":"6.2A"}},"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/1.5SMCJ150A/alternatives.json"},"ai":{"faq":[{"question":"What is 1.5SMCJ150A used for and what ratings matter for circuit protection design?","answer":"The three ratings that drive selection are: the 150V standoff (the maximum rail voltage it will not turn on against), the 243V clamping voltage at 6.2A (the voltage the protected node sees during a fault event), and the 1.5kW peak pulse power (the energy it absorbs without failing). For a 150V rail with expected transient currents below 6.2A, the clamping ceiling of 243V gives the downstream circuit protection headroom above the rail."},{"question":"What is the closest pin-compatible alternative to 1.5SMCJ150A?","answer":"The DO-214AB SMC package is shared across the industry — the Littelfuse SMCJ series and onsemi SMBJ series use the same footprint and pinout, so a pin-compatible alternative is often available if the 1.5SMCJ150A supply tightens. Confirm the standoff voltage, clamping voltage, and peak pulse current match before substituting, as the protection level is not identical across manufacturers at the same nominal rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ150A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ150A 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}}