{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC68CA-Q","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMC68CA-Q","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMC68CA-Q","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC68CA-Q","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMC68CA-Q, Automotive AEC-Q101 bidirectional TVS (Zener), 58.1V standoff, 64.6V min breakdown, 92V clamping @ 16.5A peak pulse, 1500W peak pulse power, DO-214AB (SMC) surface mount, -55°C to 150°C junction, Tape & Reel.","salesMarkdown":"## Clamping chain — standoff through breakdown to clamp The 1.5SMC68CA-Q: The reverse standoff of 58.1 V typ is the working rail — the device sits idle below this voltage, drawing only leakage current. At 64.6 V min the avalanche breakdown kicks in, which is the protection threshold; anything above it the TVS clamps hard. This rating, combined with the 16.5 A peak pulse current, tells you the clamping impedance is roughly 2 Ω — the series resistance inside the TVS that determines how much voltage headroom remains between the standoff and the clamp during a real event. ## AEC-Q101 qualification for automotive deployments The AEC-Q101 suffix marks this part as qualified to the automotive electronics stress standard — it has passed temperature cycling, humidity bias, ESDA (human-body model), and surge-life testing at the component level. That makes it the correct choice for any ECU input, CAN/LIN bus, or power rail protection on the vehicle side of the harness, not just general industrial use. ## SMC package and board integration The DO-214AB (SMC) is a two-terminal gull-wing package — the cathode band marks the polarity end. Thermal layout matters: the cathode pad carries the surge current during a clamp event, so the land pattern under the cathode should use the maximum copper area the board stack-up allows. Surface-mount pick-and-place compatible in Tape & Reel packaging — the standard orientation for high-volume assembly. Verify the land pattern matches the Bourns recommended footprint drawing; the SMC shares the same body size as the SMA and SMB but has a higher current rating, so the pad geometry differs from the lower-power siblings.","metaTitle":"Bourns 1.5SMC68CA-Q TVS Diode, 58.1V Standoff, AEC-Q101","metaDescription":"Bourns 1.5SMC68CA-Q bidirectional TVS diode, AEC-Q101 qualified, 58.1V standoff / 64.6V breakdown / 92V clamping, 16.5A peak pulse, DO-214AB SMC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Bourns Inc.","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5SMC-Q","Package":"Tape & Reel (TR)","Applications":"Automotive, Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"92V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"16.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3210","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/00f8f6b6bc06cde1cd0f010601823fa9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC68CA-Q/alternatives.json"},"ai":{"faq":[{"question":"What does the CA suffix mean on the 1.5SMC68CA-Q?","answer":"The CA suffix denotes a bidirectional (polarity-independent) TVS diode. A unidirectional version would be the 1.5SMC68A-Q. Bidirectional means it clamps both positive and negative transients — the correct choice for AC signal rails, differential bus lines, or any node where the voltage can swing below ground during a surge event."},{"question":"What cross-reference or alternative exists in the 1.5SMC-Q series?","answer":"The 1.5SMC68CA-Q sits in Bourns' 1.5SMC-Q family of 1500 W peak-pulse TVS diodes covering standoff voltages across the E24 series. The CA suffix identifies it as bidirectional; the numeric prefix (68) indicates the nominal standoff voltage. The 1.5SMC series shares the same DO-214AB footprint, so any Bourns 1.5SMC variant with a different standoff voltage is pin-compatible but changes the protection threshold — confirm the standoff rating against the protected rail before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMC68CA-Q","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMC68CA-Q 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}}