{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE350C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE350C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE350C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE350C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series bidirectional TVS Zener diode, 1.5KE350C, 1500W peak pulse, 300V reverse standoff, 506.1V clamping, DO-201AA axial, Tape & Reel.","salesMarkdown":"## 1500W bidirectional TVS for high-voltage rail clamping The 1.5KE350C: Its 300V reverse standoff voltage and 506.1V clamping ceiling make it a fit for protecting 300V DC bus rails or AC line rectified stages against transients up to 3.2A peak pulse current. ## Obsolete — sourcing via surplus and broker channels Littelfuse lists the 1.5KE350C as Obsolete. For BOM lines that still call out this part number, the primary channel is independent surplus and broker inventory. Availability is lot-specific — date-code spread and original packaging (sealed reel vs loose tube) vary by lot. ## Parametric fit — what the ratings mean for your rail The 300V reverse standoff (working voltage) means the diode draws negligible leakage below 300V DC — it stays out of the circuit during normal operation. The breakdown window starts at 315V minimum, so a 300V rail that sags to 310V during brownout still sees no clamping action. Clamping at 506.1V maximum under 3.2A peak pulse defines the voltage the downstream components must survive. If the protected device's abs-max rating is below 506V, a secondary clamp or a higher-power TVS (e.g., 5KP series) may be needed. The 1500W rating is derated above 25°C per the datasheet curve; at 125°C ambient the effective peak pulse power drops to roughly 750W.","metaTitle":"1.5KE350C Littelfuse TVS Diode, 1500W, 300V Standoff","metaDescription":"Littelfuse 1.5KE350C bidirectional TVS, 1500W peak pulse, 300V standoff, DO-201. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","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)":"315V","Voltage - Clamping (Max) @ Ipp":"506.1V","Voltage - Reverse Standoff (Typ)":"300V","Current - Peak Pulse (10/1000µs)":"3.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE350C?","answer":"The 1.5KE350C is obsolete per Littelfuse. It is sourced through independent surplus and broker channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE350C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE350C when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}