{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400CA-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE400CA-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400CA-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400CA-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® bidirectional TVS diode, 1.5KE400CA-/73, 1500W peak pulse, 342V standoff, 548V clamp, DO-201AA axial, through hole.","salesMarkdown":"## Bidirectional TVS for 342 V rail protection The 1.5KE400CA-E3/73: Its 342 V reverse standoff voltage makes it a fit for protecting 342 VDC or 240 VAC nominal rails against transients, with a minimum breakdown of 380 V and a clamping ceiling of 548 V at 2.7 A peak pulse current. ## What the clamping voltage means for your rail At 548 V max clamping, the TVS holds the transient below the typical 600 V rating of downstream electrolytic capacitors and semiconductor switches in a 342 V bus. The 2.7 A peak pulse current rating at the 10/1000 µs test waveform tells you the device can absorb a moderate-energy surge — a lightning-induced transient or inductive kickback — but not a direct lightning strike without additional series impedance. Through-hole DO-201AA axial package suits point-to-point wiring on terminal blocks or perfboard prototypes where surface-mount reflow is not an option. ## Obsolete — sourcing through surplus channels Vishay lists this part as obsolete. For a new design, a current-production bidirectional TVS in a similar voltage class and DO-201 package should be evaluated; the 1.5KE series has been widely second-sourced, but pin-to-pin compatibility must be checked against the original Vishay datasheet dimensions.","metaTitle":"Vishay 1.5KE400CA-E3/73 TransZorb TVS, 1500W, 548V Clamp","metaDescription":"Obsolete Vishay 1.5KE400CA-E3/73 bidirectional TVS diode, 1500W peak pulse, 342V standoff, DO-201AA axial.","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 & Box (TB)","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":"1.5KE400","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"380V","Voltage - Clamping (Max) @ Ipp":"548V","Voltage - Reverse Standoff (Typ)":"342V","Current - Peak Pulse (10/1000µs)":"2.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE400CA-/73 use?","answer":"It comes in a DO-201AA (DO-27) axial leaded package, through-hole mount. The supplier device package code is 1.5KE."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400CA-E3-73","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/1.5KE400CA-E3-73 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}}