{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESD5Z3.3T1","brand":"onsemi","brandSlug":"onsemi","productSlug":"ESD5Z3.3T1","canonicalUrl":"https://icboms.com/onsemi/ESD5Z3.3T1","factsUrl":"https://icboms.com/api/mcp/products/ESD5Z3.3T1","rawCanonicalId":null},"summary":{"shortDescription":"onsemi ESD5Z3.3T1, Zener-type ESD protection diode, 3.3V reverse standoff, 14.1V clamping at 11.2A (8/20µs), 105pF capacitance, SOD-523 package","salesMarkdown":"Confirm the package (SOD-523,) and the 3.3V standoff rating before committing a replacement; a parametric match from another vendor may require a footprint change. ## 3.3V rail protection — clamping and capacitance The clamping voltage is 14.1V at the peak pulse current of 11.2A (8/20µs waveform). That 14.1V ceiling is the voltage the protected IC sees during an ESD strike; check that your downstream device's absolute-max rating leaves margin above 14.1V. Capacitance is 105pF at 1MHz. On a 3.3V signal line running at, say, 12MHz or below, 105pF is generally fine — the RC time constant with a typical source impedance stays under a quarter-bit period. For USB 2.0 (480Mbps) or HDMI, that capacitance starts to degrade eye-diagram margin; a sub-1pF TVS diode would be a better fit for high-speed differential pairs. ## SOD-523 footprint and temperature range Housed in the SOD-523 package (SC-79 equivalent,) — a 0.80mm x 1.25mm body with 0.50mm pitch leads. No power-line protection — this is a signal-line ESD clamp, not a surge-rated TVS for power inputs.","metaTitle":"ESD5Z3.3T1 onsemi ESD Protection Diode, 3.3V, SOD-523","metaDescription":"ESD5Z3.3T1 from onsemi — Zener-type ESD protection, 3.3V reverse standoff, 14.1V clamping, 105pF capacitance, SOD-523. Now obsolete; sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"-","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"SC-79, SOD-523","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"158W","Base Product Number":"ESD5","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"105pF @ 1MHz","Supplier Device Package":"SOD-523","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"5V","Voltage - Clamping (Max) @ Ipp":"14.1V","Voltage - Reverse Standoff (Typ)":"3.3V (Max)","Current - Peak Pulse (10/1000µs)":"11.2A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/32a7aa25708c44b218e59a0ef208ee83.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the ESD5Z3.3T1 or check stock?","answer":"The ESD5Z3.3T1 is obsolete and not in active factory production. We source it through our independent distribution network — submit an RFQ with your target quantity and we will confirm availability and current pricing at quote time. No stock-holding claim is made here; every order is sourced per your BOM line."},{"question":"Is the ESD5Z3.3T1 obsolete?","answer":"Yes, onsemi lists the product status as Obsolete. No direct replacement part number has been published by onsemi. For a new design, consider a current-production Zener ESD suppressor in SOD-523 with a 3.3V standoff — confirm the clamping voltage and capacitance match your margin requirements."},{"question":"Does the ESD5Z3.3T1 work for 3.3V circuits?","answer":"Yes. The reverse standoff voltage is 3.3V max, so it clamps once the line exceeds 3.3V — a direct fit for 3.3V logic I/O or power rails. The 105pF capacitance is acceptable for low-to-moderate speed signals but may be too high for high-speed differential interfaces like USB 2.0 or HDMI."},{"question":"What is the capacitance of the ESD5Z3.3T1?","answer":"Typical capacitance is 105pF measured at 1MHz. This is a moderate value — suitable for general-purpose I/O and lower-speed buses, but not ideal for high-speed differential pairs where sub-1pF devices are preferred."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/ESD5Z3.3T1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/ESD5Z3.3T1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:22:06.117Z","lastPublished":"2026-07-17T20:22:06.117Z","indexable":true}}