{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CA-E3/57T","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC9.1CA-E3-57T","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CA-E3-57T","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA-E3%2F57T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1.5SMC TransZorb® Zener TVS diode, 1500W peak pulse, 8.65V min breakdown, 13.4V max clamping @ 112A, bidirectional, DO-214AB SMC, -65°C~150°C junction, surface mount.","salesMarkdown":"## Peak pulse power — what 1.5 kW means in the protection circuit The 1.5SMC9.1CA-E3/57T: The 1500 W peak pulse rating (10/1000 µs waveform) is the ceiling this part sets for absorbed transient energy — it defines the largest surge the clamping path can survive without degradation or failure. The 112 A peak pulse current rating is the other half of that ceiling: at the clamping voltage of 13.4 V, the device conducts up to 112 A for the standard 10/1000 µs event, and the two specs together confirm the protection envelope for the downstream node. ## Standoff, breakdown, and clamping — the three-voltage protection sequence The reverse standoff voltage of 7.78 V is the bias the circuit sees during normal operation — it sits below the breakdown threshold, so the diode presents a high impedance and draws only leakage current. The separation between standoff (7.78 V) and clamping (13.4 V) defines the protection headroom — the downstream component must survive a short-duration overvoltage spike of 13.4 V for the event to be safely absorbed. Power line protection is listed as No — this part is not characterized for dedicated AC power-line suppression. It suits node-level or signal-line protection in DC circuits, where the 8.65 V breakdown and 7.78 V standoff are appropriate for 5 V or low-voltage rail protection. ## Bidirectional clamping and thermal margin A single bidirectional channel means it clamps both polarities — useful for data lines, RF paths, or any node that sees symmetric transients without requiring two unidirectional devices. ## Where the 1.5SMC family is deployed The 1.5SMC TransZorb® series is a general-purpose unidirectional/bidirectional TVS family used across industrial control, communications, and consumer electronics to protect sensitive nodes from electrostatic discharge and inductive switching transients. The DO-214AB (SMC) J-lead package is a standard surface-mount outline compatible with automated assembly workflows; the listing confirms both Tape & Reel and Cut Tape packaging options to support production quantities and prototype runs respectively.","metaTitle":"Vishay 1.5SMC9.1CA-E3/57T TVS Diode, 1.5kW 13.4V","metaDescription":"Vishay 1.5SMC9.1CA-E3/57T Zener TVS, 1500W peak pulse, 8.65V breakdown, 13.4V clamping, bidirectional, DO-214AB SMC. Active production.","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); Cut Tape (CT)","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":"1.5SMC9.1","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CA-E3%2F57T/alternatives.json"},"ai":{"faq":[{"question":"What voltage parameters should I verify before specifying 1.5SMC9.1CA-/57T?","answer":"The three voltages that drive the fit decision are the reverse standoff (7.78 V typ), the minimum breakdown (8.65 V), and the maximum clamping voltage (13.4 V at peak pulse current). The standoff voltage must sit above the normal operating rail to avoid leakage during nominal operation, and the clamping voltage must be below the absolute-maximum rating of whatever downstream component it protects."},{"question":"Does this part have a pin-compatible sibling in the same Vishay series?","answer":"The base product number 1.5SMC9.1 indicates the 9.1 V nominal Zener voltage — other voltage points in the same 1.5SMC family share the same DO-214AB footprint and peak pulse rating. Searching within the 1.5SMC series by voltage will surface pin-compatible alternatives for different standoff or protection thresholds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CA-E3-57T","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/1.5SMC9.1CA-E3-57T 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}}