{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC170","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC170","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC170","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC170","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC series Zener TVS diode, 1.5SMC170, 1500W peak pulse power, 145V reverse standoff, 245.7V clamping, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"## 1500 W peak pulse in a DO-214AB footprint The 1.5SMC170: With a peak pulse power rating of 1500 W (10/1000 µs waveform) and a clamping voltage of 245.7 V at 6.5 A peak pulse current, it protects downstream silicon from surges like inductive load dumps or lightning-induced spikes on a DC bus. ## What the ratings mean for the board The 145 V reverse standoff voltage (V_RWM) is the maximum DC or AC peak voltage the diode can withstand without conducting — it sits across the rail in standby, drawing negligible leakage. The breakdown voltage range starts at 153.45 V minimum, meaning the diode begins to avalanche just above the normal operating voltage, leaving a guard band for rail tolerance. For a 1500 W pulse, the clamping voltage is the product of the peak current and the dynamic resistance; a lower clamp voltage means tighter protection for the downstream MOSFET or IC, but the trade-off is a higher standby current at the breakdown knee. The DO-214AB (SMC) package is a standard surface-mount footprint for TVS diodes in this power class. The junction operates from -55°C to 150°C, so the part handles the self-heating from repetitive surges as long as the average power stays within the derating curve — a single 1500 W pulse at 25°C is well within the single-pulse rating, but repetitive pulses require thermal budgeting. ## Obsolete — sourcing through independent channels For a BOM line that calls out this exact ordering code, the supply path is through verified surplus and broker inventory. The DO-214AB package and 1500 W rating are the key fit criteria — any replacement would need to match the footprint and the 145 V standoff.","metaTitle":"Littelfuse 1.5SMC170 TVS Diode, 1500W, DO-214AB","metaDescription":"Littelfuse 1.5SMC170 Zener TVS diode, 1500W peak pulse, 145V standoff, DO-214AB. Obsolete — sourced to order. Request a quote.","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)":"153.45V","Voltage - Clamping (Max) @ Ipp":"245.7V","Voltage - Reverse Standoff (Typ)":"145V","Current - Peak Pulse (10/1000µs)":"6.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the 1.5SMC170 or check current availability?","answer":"Submit an RFQ for the 1.5SMC170."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC170","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC170 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}