{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESD9X12ST5G","brand":"onsemi","brandSlug":"onsemi","productSlug":"ESD9X12ST5G","canonicalUrl":"https://icboms.com/onsemi/ESD9X12ST5G","factsUrl":"https://icboms.com/api/mcp/products/ESD9X12ST5G","rawCanonicalId":null},"summary":{"shortDescription":"onsemi ESD9X12ST5G, Zener-type ESD protection diode, 12V reverse standoff, 140W peak pulse power, 30pF capacitance, SOD-923 package.","salesMarkdown":"## Zener ESD clamp for signal-line protection The ESD9X12ST5G is a single-channel Zener-type ESD suppressor from onsemi, designed to clamp fast transients on general-purpose signal lines. Its 12V (max) reverse standoff voltage and 13.5V minimum breakdown define the trigger window for a 23.7V clamping ceiling at the rated peak pulse current. Rated for 140W peak pulse power with a 5.9A (8/20µs) peak pulse current capability, this part handles the energy from typical ESD strikes and cable discharge events without exceeding the junction temperature limit of 150°C. ## Capacitance and signal integrity With 30pF capacitance measured at 1MHz, the ESD9X12ST5G adds minimal loading to high-speed data lines such as USB 2.0, HDMI, or LVDS interfaces. This capacitance value keeps signal edge degradation low enough for most general-purpose and moderate-speed digital buses. The product status is Active, meaning onsemi continues to manufacture and supply this ordering code without an announced end-of-life.","metaTitle":"ESD9X12ST5G onsemi Zener ESD Protection, 140W, SOD-923","metaDescription":"onsemi ESD9X12ST5G Zener-type ESD suppressor, 12V standoff, 140W peak pulse, 30pF, SOD-923. Active production.","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":"140W","Base Product Number":"ESD9X12","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"30pF @ 1MHz","Supplier Device Package":"SOD-923","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"13.5V","Voltage - Clamping (Max) @ Ipp":"23.7V","Voltage - Reverse Standoff (Typ)":"12V (Max)","Current - Peak Pulse (10/1000µs)":"5.9A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9431dc0d7a4d444b344403bcff4938f8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power rating of ESD9X12ST5G?","answer":"The peak pulse power is 140W, measured with an 8/20µs waveform. This rating defines the maximum transient energy the device can clamp without damage."},{"question":"What is the capacitance of ESD9X12ST5G and why does it matter?","answer":"Capacitance is 30pF at 1MHz. This low value makes the part suitable for protecting high-speed signal lines where excessive capacitive loading would distort the signal edges."},{"question":"What package does ESD9X12ST5G come in?","answer":"The device is supplied in the SOD-923 surface-mount package."},{"question":"Is ESD9X12ST5G unidirectional or bidirectional?","answer":"It is a unidirectional ESD suppressor with 1 channel, meaning it clamps transients of one polarity relative to ground."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/ESD9X12ST5G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/ESD9X12ST5G 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}}