{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400A B0G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE400A-B0G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE400A-B0G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400A%20B0G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE series Zener TVS diode, 1.5KE400A B0G, 1500W peak pulse power, 342V reverse standoff, 548V clamping, DO-201AA axial through-hole, bulk.","salesMarkdown":"## Transient protection for 342V DC rails The 1.5KE400A B0G: Its 380V minimum breakdown voltage and 548V maximum clamping point define the protection window — the rail must stay below 342V during normal operation, and any spike that drives it above 380V triggers the avalanche, shunting the surge to ground until the voltage is clamped at 548V. The 175°C maximum junction temperature gives thermal headroom for repetitive events in hot environments like industrial control cabinets or power supply outputs. ## DO-201 axial — bench-friendly rework Housed in a DO-201AA / DO-27 axial through-hole package (supplier device package DO-201), this diode is built for a rework station. The large body and thick leads transfer heat cleanly — a soldering iron or hot-air pencil lifts the part without lifting the pad, and the polarity band is clearly marked on the body. No fine-pitch alignment, no hidden solder joints; it reflows back into the board in seconds. The through-hole form factor also means the part stands off the board, allowing airflow around the body for convective cooling. In a high-surge application, that thermal path from the junction through the leads and into the PCB copper is the primary heat sink — the axial package delivers it without a thermal pad or exposed paddle. Taiwan Semiconductor lists the 1.5KE400A B0G as Active in production status.","metaTitle":"1.5KE400A B0G TVS Diode, 1500W, 342V Standoff, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE400A B0G Zener TVS diode, 1500W peak pulse power, 342V reverse standoff, 548V clamping, DO-201 axial.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"1.5KE","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"380V","Voltage - Clamping (Max) @ Ipp":"548V","Voltage - Reverse Standoff (Typ)":"342V","Current - Peak Pulse (10/1000µs)":"2.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a688563676897fea683fa9d5a5542f4e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE400A%20B0G/alternatives.json"},"ai":{"faq":[{"question":"Is the 1.5KE400A B0G unidirectional or bidirectional?","answer":"It is a single-channel unidirectional Zener TVS diode. The cathode band marks the polarity — it protects against positive transients referenced to ground. For bidirectional protection on AC lines or bipolar rails, use the 'CA' suffix variant of the same series."},{"question":"What package is the 1.5KE400A B0G in and can it be reworked?","answer":"It comes in a DO-201AA / DO-27 axial through-hole package (supplier device package DO-201). The through-hole leads and large body make it straightforward to remove and replace with a soldering iron or hot-air station — no special rework profile needed, and the polarity band is clearly visible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE400A-B0G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5KE400A-B0G 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}}