{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC68","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC68","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC68","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC68","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMC68 Zener TVS diode, unidirectional 1-channel, 1500W peak pulse, 96.6V clamping @ 16.5A, 58.1V standoff, DO-214AB SMC surface mount, -55°C~150°C, Tape & Reel.","salesMarkdown":"## What 1500W peak pulse means for transient protection The 1.5SMC68: The 96.6 V clamping ceiling at 16.5 A peak is the spec that governs what reaches the protected load: downstream MOSFET gates, op-amp inputs, or communication bus transceivers see no more than 96.6 V during the surge event. The reverse standoff voltage of 58.1 V typ sets the dc working voltage the TVS sees in normal operation — below this it presents a high impedance and draws only leakage current. When the transient pushes the line above the 61.2 V minimum breakdown, the device avalanche-clamp kicks in and returns the line to below 96.6 V within the 10/1000 µs response window. ## Industrial temp grade and board-fit realities Operating junction temperature runs to 150°C max, which puts the -55°C lower bound in play for cold-start and high-altitude deployments — the same thermal envelope covers under-hood automotive, outdoor telecom power, and industrial motor-drive enclosures. Surface-mount termination on a DO-214AB land pattern demands the standard three-solder-pad footprint; the cathode bar on the SMC package marks the protection direction — the anode side faces the protected line, and that orientation is non-negotiable for unidirectional operation. ## Sourcing status — obsolete, not gone The 1.5SMC68 carries an Obsolete product status — this is a Littelfuse-end-of-life part, not an active line. No official successor order code appears in the current cross-reference record; sourcing runs through independent and excess-inventory channels where available lot quantities are confirmed at RFQ. The 1.5SMC series family footprint and clamping chain are well-populated with active alternatives, but a pin-compatible replacement with identical standoff and clamping ratings requires checking the current series revision — board-level fit is the same DO-214AB, but the datasheet revision must be verified for the protection scheme to hold.","metaTitle":"Littelfuse 1.5SMC68 TVS Diode, 1500W Peak, DO-214AB","metaDescription":"Littelfuse 1.5SMC68 unidirectional Zener TVS, 58.1V standoff, 61.2V breakdown, 96.6V clamping @ 16.5A. Obsolete — sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"61.2V","Voltage - Clamping (Max) @ Ipp":"96.6V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"16.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC68/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5SMC68 used for?","answer":"Zener-type unidirectional TVS in the DO-214AB SMC package — designed to clamp transient voltage spikes on power rails and signal lines in general-purpose applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC68","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC68 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T09:59:11.362Z","lastPublished":"2026-07-21T09:59:11.362Z","indexable":true}}