{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91CA A0G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5KE91CA-A0G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE91CA-A0G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91CA%20A0G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor 1.5KE series Zener TVS diode, 1.5KE91CA A0G, bidirectional, 1500W peak pulse power, 77.8V reverse standoff, 125V clamp, DO-201AA axial package.","salesMarkdown":"## Surge protection for 77.8V DC rails The 1.5KE91CA A0G: With a peak pulse power rating of 1500W (10/1000µs waveform), it absorbs surge energy that would otherwise damage sensitive downstream components in industrial control, telecom, and general-purpose power supply circuits. ## Clamping voltage and breakdown threshold The reverse standoff voltage is 77.8V typical — this is the maximum DC voltage the diode can block without conducting. This 125V clamp ceiling defines the voltage stress the protected circuit must survive during a surge event. The bidirectional configuration (single channel) means the clamping characteristic is symmetrical for positive and negative transients — useful on AC-coupled lines or bipolar signal buses where polarity cannot be guaranteed. ## Package and thermal considerations Housed in a DO-201AA (DO-27) axial leaded package, the through-hole footprint suits high-reliability soldering and board-level rework. The operating junction temperature range spans -55°C to 175°C, covering industrial and automotive under-hood ambient conditions without derating at the upper end.","metaTitle":"1.5KE91CA A0G TVS Diode, 1500W Bidirectional, DO-201","metaDescription":"Taiwan Semiconductor 1.5KE91CA A0G Zener TVS, 1500W peak pulse, 77.8V standoff, 125V clamp, bidirectional, DO-201. Active production, quoted to order.","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":"Tape & Box (TB)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE91","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a2b73a1d98c4cb2766de41c34fd08875.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE91CA%20A0G/alternatives.json"},"ai":{"faq":[{"question":"What package does the 1.5KE91CA A0G come in?","answer":"It is supplied in a DO-201AA (DO-27) axial leaded through-hole package, shipped in tape and box (TB) format."},{"question":"Where can I buy 1.5KE91CA A0G and how is it quoted?","answer":"Submit an RFQ for a firm quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5KE91CA-A0G","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/1.5KE91CA-A0G 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}}