{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE9.1ARL4","brand":"onsemi","brandSlug":"onsemi","productSlug":"1.5KE9.1ARL4","canonicalUrl":"https://icboms.com/onsemi/1.5KE9.1ARL4","factsUrl":"https://icboms.com/api/mcp/products/1.5KE9.1ARL4","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ 1.5KE9.1ARL4, Zener TVS diode, 1500W peak pulse power, 7.78V reverse standoff, 13.4V clamping, DO-201AD axial package, through-hole mount.","salesMarkdown":"## 1500W peak pulse power in a DO-201AD axial package The 1.5KE9.1ARL4 is an onsemi Mosorb™ Zener TVS diode rated for 1500 W peak pulse power, with a reverse standoff voltage of 7.78 V and a maximum clamping voltage of 13.4 V at 112 A peak pulse current. This single unidirectional channel protects a 7.78 V rail from transients up to 1500 W, making it suitable for general-purpose surge suppression in through-hole designs. ## Clamping voltage and breakdown margin With a minimum breakdown voltage of 8.65 V and a maximum clamp of 13.4 V, the 1.5KE9.1ARL4 offers a ~5 V margin between the rail and the clamp—tight enough for a 7.78 V nominal bus but not for a 12 V rail. The 112 A peak pulse current capability (10/1000 µs) ensures the diode can absorb repetitive surges without exceeding the junction temperature range of -65°C to 175°C. ## Obsolete status and sourcing reality onsemi has marked the 1.5KE9.1ARL4 as Obsolete. No official successor is listed. For a BOM line that still calls for this exact order code, the only procurement path is to source remaining inventory through distribution or broker channels. The DO-201AD axial footprint is shared by many active TVS diodes in the 1.5KE series—confirm the breakdown voltage and package match when substituting.","metaTitle":"1.5KE9.1ARL4 onsemi Mosorb™ Zener TVS, 1500W, DO-201AD","metaDescription":"onsemi 1.5KE9.1ARL4 Zener TVS, 1500W peak pulse power, 7.78V standoff, 13.4V clamp, DO-201AD axial. Obsolete—source here or find replacement via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"Mosorb™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/717ad1fc0ab391931f54c66e75e89e87.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order 1.5KE9.1ARL4 or check availability?","answer":"Submit an RFQ for the 1.5KE9.1ARL4. As an obsolete part, availability is limited to existing stock; we source against your BOM quantity and confirm pricing and lead time at quote. The DO-201AD axial package is tape-and-reel or bulk—specify preference in the RFQ."},{"question":"What is the replacement for 1.5KE9.1ARL4?","answer":"No official replacement is listed by onsemi. For a pin-compatible alternative, look for a 1.5KE series Zener TVS with the same 7.78 V standoff, 8.65 V min breakdown, and DO-201AD axial package—such as the active 1.5KE9.1A (without the RL4 suffix). Confirm the clamping voltage and peak pulse current match your transient requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1.5KE9.1ARL4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1.5KE9.1ARL4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:13:31.420Z","lastPublished":"2026-07-17T20:13:31.420Z","indexable":true}}