{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC68A-M3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC68A-M3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC68A-M3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC68A-M3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1.5SMC, TransZorb® unidirectional TVS diode, 1.5SMC68A-M3/9AT, 1500W peak pulse, 58.1V standoff, 92V clamping @ 16.3A, DO-214AB SMC, surface mount, -65°C to 150°C junction.","salesMarkdown":"## Clamping and protection ratings The 1.5SMC68A-M3/9AT: The standoff voltage of 58.1V marks the maximum steady-state working level the protected rail sees in normal operation. The TVS avalanches at a minimum 64.6V across the junction — that gap between 58.1V and 64.6V is the design headroom before the protection element engages. At 1500W peak pulse, the 1.5SMC68A handles the 10/1000µs waveform surge class common in AC power and signal line protection. The unidirectional polarity means it protects a single rail against positive transients — fit it across the supply-to-ground of the circuit you are guarding. For a bipolar or dual-rail board, you would need the bidirectional counterpart. ## Package and thermal margins The surface-mount form factor suits automated placement, and tape-and-reel packaging confirms the ordering code variant you want if you are running high-volume pick-and-place. The 150°C maximum junction temperature gives a 50°C margin above the upper operating ambient in most enclosed equipment designs — but in a sealed chassis or near a heat source, verify the thermal resistance from junction to ambient against the expected surge duty cycle before committing to the layout. ## Series context and lifecycle The 1.5SMC series carries the Vishay TransZorb® designation — a glass-passivated junction TVS construction originally introduced for telecom and power-supply transient protection. The base part number 1.5SMC68 places it in the 58.1V standoff family; the A suffix denotes the tight ±5% voltage tolerance band required for consistent clamping threshold.","metaTitle":"1.5SMC68A-M3/9AT Vishay 1.5SMC68A TVS Diode, 1.5kW, 58.1V","metaDescription":"Vishay 1.5SMC68A-M3/9AT unidirectional TVS diode, 1500W peak pulse, 58.1V standoff, 92V clamping, DO-214AB SMC, active.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC68","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"92V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"16.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3333","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC68A-M3%2F9AT/alternatives.json"},"ai":{"faq":[{"question":"What does a unidirectional TVS diode like 1.5SMC68A-M3/9AT protect against?","answer":"It clamps positive voltage transients on a single polarity rail — the standoff voltage of 58.1V is the working level, and any spike that drives the rail above the 64.6V breakdown threshold is clamped to a maximum of 92V across the protected load. It does not protect against negative transients; those require a bidirectional variant."},{"question":"Where can I source 1.5SMC68A-M3/9AT and get a quote?","answer":"Availability and current lead times are confirmed at RFQ — request a quote with your target quantity and required date."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC68A-M3-9AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC68A-M3-9AT 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}}