{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE56A-HF","brand":"Comchip Technology","brandSlug":"comchip-technology","productSlug":"1.5KE56A-HF","canonicalUrl":"https://icboms.com/comchip-technology/1.5KE56A-HF","factsUrl":"https://icboms.com/api/mcp/products/1.5KE56A-HF","rawCanonicalId":null},"summary":{"shortDescription":"Comchip Technology 1.5KE-HF series Zener TVS diode, 1.5KE56A-HF, 1500W peak pulse power, 77V clamping, unidirectional, DO-201AA axial, through-hole.","salesMarkdown":"## Transient protection envelope for a 48 V rail The 1.5KE56A-HF: Its 47.8 V reverse standoff voltage sits below the rail, so it stays out of circuit during normal operation, while the minimum breakdown voltage of 53.2 V defines the trigger point where it starts conducting. ## What the 1500 W rating means for the BOM That clamping voltage is the ceiling the downstream circuitry sees — if the DC-DC converter or load switch on the 48 V rail has an absolute maximum below 77 V, this TVS will not protect it. The 1500 W rating is a peak number; the steady-state power dissipation is negligible because the device only conducts during the transient event. Supplied in a DO-201AA axial-lead package, also known as DO-27, with the die housed in the DO-201 supplier package. The through-hole mounting requires a drilled hole in the PCB — the axial leads are bent and inserted, then soldered on the opposite side. The 1.5KE-HF series is shipped in Tape & Box format, which is the standard reel-less packaging for axial diodes in production runs. The junction temperature range spans -55°C to 150°C, covering industrial and outdoor telecom environments where the ambient may reach 85°C and the junction sees additional self-heating during the surge event. The 150°C ceiling is the absolute maximum junction temperature — derate the peak pulse power above 25°C per the datasheet curve. The part carries no power line protection rating, so it is intended for signal or low-voltage DC bus protection, not AC mains. ## Active production and sourcing posture Comchip Technology lists the 1.5KE56A-HF as Active, meaning the manufacturer continues to produce it.","metaTitle":"Comchip 1.5KE56A-HF Zener TVS, 1500W, DO-201","metaDescription":"1.5KE56A-HF Zener TVS diode from Comchip Technology, 1500W peak pulse power, 77V clamping, DO-201 axial. Active production. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Comchip Technology","Type":"Zener","Series":"1.5KE-HF","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":"1.5KE","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"53.2V","Voltage - Clamping (Max) @ Ipp":"77V","Voltage - Reverse Standoff (Typ)":"47.8V","Current - Peak Pulse (10/1000µs)":"19.48A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3749","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9f43de99c350433b7129996d8f2ed805.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/comchip-technology/1.5KE56A-HF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/comchip-technology/1.5KE56A-HF 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}}