{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91A V7G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC91A-V7G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91A-V7G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91A%20V7G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation 1.5SMC Zener TVS, 1.5SMC91A V7G, unidirectional, 77.8V reverse standoff, 86.5V min breakdown, 125V clamping @ 12.6A, 1500W peak pulse, -55°C to 150°C TJ, DO-214AB SMC surface mount, Tape & Reel.","salesMarkdown":"## Standoff, breakdown, and clamping — what the voltage hierarchy means The 1.5SMC91A V7G is a unidirectional TVS diode in the 1.5SMC series — designed to absorb transients on a telecom rail without letting the protected node see more than the clamping ceiling. The reverse standoff of 77.8 V sets the normal operating range: the device sits idle below that, drawing only leakage current. That 125 V clamping maximum is what the downstream load sees during a spike — and with 1500 W peak pulse dissipation, the part handles a substantial event before it degrades. Working backward from the clamping spec: a 125 V clamp at 12.6 A peak pulse means the TVS is clamping aggressively at this rating point, which is exactly what a 1500 W device is designed to do. The 77.8 V standoff sits comfortably below the 86.5 V breakdown minimum, so there is meaningful headroom between the normal rail and the turn-on threshold. ## Temperature range and telecom deployment Junction temperature is what matters for reliability; the 150°C ceiling gives thermal margin for transients that push average dissipation above the derated steady-state limit. The DO-214AB (SMC) package is the industry-standard surface-mount footprint for 1500 W TVS diodes — wide adoption means second-source options are available if the BOM line needs a hedge. Tape-and-reel packaging suits automated placement in high-volume telecom board assembly. ## Active status and sourcing posture Telecom is the stated application category, and the unidirectional polarity is correct for DC rail protection on a positive-going transient path. Power Line Protection is flagged No — this part is not positioned for AC mains crowbar protection but rather for DC secondary-side clamping in telecom power distribution.","metaTitle":"1.5SMC91A V7G TVS Diode, 77.8V Standoff, 125V Clamp","metaDescription":"Taiwan Semiconductor 1.5SMC91A V7G unidirectional TVS diode, 77.8V standoff / 125V clamping, 1500W peak pulse, active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR)","Applications":"Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC91","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2817","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91A%20V7G/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 1.5SMC91A V7G and how is it quoted?","answer":"Sourced through independent distribution channels on a quoted-to-order basis."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91A-V7G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91A-V7G 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}}