{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESD9L3.3ST5G","brand":"onsemi","brandSlug":"onsemi","productSlug":"ESD9L3.3ST5G","canonicalUrl":"https://icboms.com/onsemi/ESD9L3.3ST5G","factsUrl":"https://icboms.com/api/mcp/products/ESD9L3.3ST5G","rawCanonicalId":null},"summary":{"shortDescription":"onsemi ESD9L3.3ST5G, Zener TVS diode, 3.3 V reverse standoff, 9 V clamp at 1 A (8/20 µs), 0.5 pF capacitance, SOD-923 package, active production.","salesMarkdown":"## 3.3 V rail ESD clamp with sub-pF loading The ESD9L3.3ST5G is a single-channel Zener TVS diode from onsemi designed to protect 3.3 V signal or power rails against ESD transients. Its 3.3 V (Max) reverse standoff voltage means the diode stays off below that rail; conduction starts when the line exceeds 4.8 V breakdown. Capacitance is 0.5 pF at 1 MHz — low enough to keep high-speed signal edges clean on interfaces like USB 2.0, HDMI, or Gigabit Ethernet. The SOD-923 package (0.6 x 0.3 mm footprint) saves board real estate but requires precise solder paste deposition; rework is challenging without a microscope station. The 9 V clamp at 1 A (8/20 µs) sets the upper voltage the downstream IC must survive. If the IC's absolute maximum rating on the pin is 5 V, this diode alone does not guarantee protection — a series resistor or secondary clamp may be needed. The 1 A peak pulse current rating is typical for IEC 61000-4-2 ESD strikes at ±8 kV contact; for higher-energy surges (e.g., 10/1000 µs), the diode is not rated. ## Active production — no end-of-life clock ticking","metaTitle":"ESD9L3.3ST5G onsemi Zener TVS Diode – 3.3 V, 0.5 pF, SOD-923","metaDescription":"ESD9L3.3ST5G by onsemi – Zener TVS diode, 3.3 V reverse standoff, 9 V clamp, 0.5 pF capacitance. Active lifecycle. SOD-923 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"SOD-923","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"-","Base Product Number":"ESD9L3.3","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"0.5pF @ 1MHz","Supplier Device Package":"SOD-923","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"4.8V","Voltage - Clamping (Max) @ Ipp":"9V","Voltage - Reverse Standoff (Typ)":"3.3V (Max)","Current - Peak Pulse (10/1000µs)":"1A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4c40007e40820bc77dd3fbe67a89dffa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order ESD9L3.3ST5G or check availability?","answer":"ESD9L3.3ST5G is an active onsemi part. We source it per RFQ — submit your target quantity and we will confirm pricing and lead time from our supply chain. No stock-holding claim on this page; availability confirmed at quote time."},{"question":"Can I use ESD9L3.3ST5G for 5 V protection?","answer":"No. The reverse standoff voltage is 3.3 V (Max). On a 5 V rail the diode would be forward-biased and conduct continuously, damaging both the diode and the signal. For 5 V protection look at the ESD9L5.0ST5G or similar."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/ESD9L3.3ST5G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/ESD9L3.3ST5G 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}}