{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ43CA","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ43CA","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ43CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ43CA","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ43CA Zener TVS diode, 1500W peak pulse, 43V standoff, 69.4V clamping @ 21.6A, bidirectional, DO-214AB (SMC) surface mount, -50°C to 150°C junction.","salesMarkdown":"## Clamping performance at a surge event The 1.5SMCJ43CA clamps transients at 69.4 V maximum at a peak pulse current of 21.6 A — that 69.4 V is the let-through voltage the downstream circuit sees when a 10/1000 µs surge hits the line. Below 43 V standoff the device sits in its high-impedance Zener region and draws only leakage current, so normal 43 V rail operation is undisturbed. Peak pulse power of 1500 W is defined on the 10/1000 µs waveform — a 10 µs rise time and 1000 µs fall time, which covers the fast-rise inductive switching spikes found in relay coils and motor drive kickback paths. The 21.6 A peak pulse current rating at that waveform tells you the current the diode conducts while clamping at 69.4 V, so the clamping voltage under a real surge scales with the actual available fault current. ## Industrial temperature grade for motor drive and power supply environments The thermal impedance of the DO-214AB package sets the system-level transient thermal response; a brief surge event stays within the transient thermal impedance curve. ## Bidirectional polarity handling One bidirectional channel means both positive transients (line-side surges) and negative transients (ground reference swings, motor reversal inductive kick) are clamped by the same device — no need to orient a unidirectional diode for polarity, and it works regardless of which rail the protected node sits on.","metaTitle":"Diotec 1.5SMCJ43CA TVS Diode, 1500W, 43V","metaDescription":"Diotec 1.5SMCJ43CA bidirectional TVS diode, 1500W peak pulse, 43V standoff, 69.4V clamping. Active product, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diotec Semiconductor","Type":"Zener","Series":"-","Package":"Strip","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-50°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"47.8V","Voltage - Clamping (Max) @ Ipp":"69.4V","Voltage - Reverse Standoff (Typ)":"43V","Current - Peak Pulse (10/1000µs)":"21.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8068","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does the 43 V standoff voltage mean for selecting this TVS?","answer":"The 43 V typical reverse standoff is the maximum voltage at which the device remains in its high-impedance off state during normal operation. Any rail up to 43 V sees only leakage current; transients above the 47.8 V minimum breakdown trigger the clamping action."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ43CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ43CA 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}}