{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE43C-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE43C-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43C-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE43C-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, TransZorb® series, bidirectional TVS Zener diode, 1.5KE43C-/54, 1500W peak pulse power, DO-201AA axial package, Tape & Reel.","salesMarkdown":"## What the 1500 W rating means for your protection design The 1.5KE43C-E3/54: The 1.5KE43C-/54 is a 1500 W peak pulse power (1.5 kW) bidirectional TVS Zener diode from Vishay's TransZorb® series, housed in a through-hole DO-201AA (DO-27, Axial) package. For shorter pulses (8/20 µs), the peak power capability climbs significantly, so the 1500 W figure is a conservative baseline for comparing clamping performance across TVS families. ## Voltage thresholds and clamping behavior For a 48 V telecom bus or a 36 V nominal DC rail, this part clamps well below typical semiconductor breakdown thresholds, giving the protected device a comfortable margin. Being bidirectional (single channel), it clamps equally on positive and negative transients. This suits AC signal lines or DC rails where the polarity could reverse during a fault — no need to orient the part on the board. Power line protection is not supported — this is a signal- or low-power-rail protector, not a mains surge suppressor. ## Obsolete — sourcing through independent channels Vishay lists the 1.5KE43C-/54 as obsolete. The DO-201AA axial package means the laser etch and date-code traceability are the primary authenticity markers; any re-marked or sanded parts should be flagged before acceptance.","metaTitle":"Vishay 1.5KE43C-E3/54 TransZorb TVS, 1500W, 34.8V","metaDescription":"Vishay 1.5KE43C-E3/54 TransZorb bidirectional TVS diode, 1500W peak pulse power, 34.8V reverse standoff. Obsolete — sourced to order via independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE43","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"38.7V","Voltage - Clamping (Max) @ Ipp":"61.9V","Voltage - Reverse Standoff (Typ)":"34.8V","Current - Peak Pulse (10/1000µs)":"24.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does the 1500 W peak pulse power actually protect?","answer":"The 1500 W rating (10/1000 µs waveform) means this diode can absorb a 24.2 A surge while clamping at 61.9 V. For a 36 V nominal rail, that clamping level keeps downstream silicon safe from most telecom and industrial transient events. The bidirectional construction handles both polarities, so it works on AC-coupled signal lines or floating DC buses."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43C-E3-54","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/1.5KE43C-E3-54 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}}