{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE27CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE27CA","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series TVS diode, Type Zener, bidirectional, 1500W peak pulse power, 23.1V reverse standoff, 37.5V clamp, DO-201AA axial, through-hole, -55°C to 175°C.","salesMarkdown":"## 1500W bidirectional transient suppressor The 1.5KE27CA: Its 37.5V clamping voltage at 40.5A peak pulse current (10/1000µs waveform) defines the protection ceiling — any surge that would push the line above 37.5V gets shunted through the device. ## Clamping voltage and standoff margin The 23.1V reverse standoff voltage is the maximum continuous DC voltage the device can withstand without conducting appreciably. The 25.7V minimum breakdown voltage gives a 2.6V guard band before avalanche starts — a 24V rail with 5% tolerance stays safely below the standoff. At the 40.5A peak pulse current, the clamping voltage rises to 37.5V max. This is the voltage the protected circuit must survive during the transient — downstream components need a breakdown rating above this figure. ## Through-hole axial package for board-level protection Housed in a DO-201AA axial package (DO-27 equivalent), the 1.5KE27CA mounts through-hole. The axial leads carry the full 40.5A pulse current — the lead diameter and solder joint must handle the surge without fusing. At 175°C the leakage current rises, but the device still clamps within the rated peak power.","metaTitle":"Littelfuse 1.5KE27CA TVS Diode, 1500W, 23.1V Standoff","metaDescription":"Littelfuse 1.5KE27CA bidirectional TVS diode, 1500W peak pulse power, 23.1V reverse standoff, 37.5V clamp, DO-201AA axial. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"1.5KE","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"25.7V","Voltage - Clamping (Max) @ Ipp":"37.5V","Voltage - Reverse Standoff (Typ)":"23.1V","Current - Peak Pulse (10/1000µs)":"40.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7081","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE27CA come in?","answer":"The 1.5KE27CA is supplied in a DO-201AA axial package (also known as DO-27), designed for through-hole mounting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE27CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE27CA 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}}