{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS30SM120SR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS30SM120SR","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS30SM120SR","factsUrl":"https://icboms.com/api/mcp/products/STPS30SM120SR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS30SM120SR, Schottky rectifier, 30 A average rectified current, 120 V DC reverse voltage, fast recovery ≤500 ns, TO-262-3 (I2PAK) through-hole package, 150°C max junction temperature.","salesMarkdown":"The STMicroelectronics STPS30SM120SR is a 30 A, 120 V Schottky rectifier in a through-hole TO-262 (I2PAK) package. The Schottky technology delivers fast switching with a forward voltage drop of 950 mV at the full 30 A rated current, keeping conduction losses manageable for the current class. Any new design-in should target an alternative — either a pin-compatible Schottky in the same package or a functionally equivalent device with similar 30 A, 120 V ratings and a through-hole I2PAK footprint. ## Key ratings and the decisions they drive The 30 A average rectified current and 120 V reverse voltage set the operating envelope for this diode. The 950 mV forward drop at 30 A is the figure to use for worst-case conduction loss calculations — at lower currents the drop will be lower, but the thermal design must handle the full 28.5 W dissipation at rated current if the heatsink is sized for continuous operation. The 275 µA reverse leakage at 120 V is a consideration for standby power budgets, especially at elevated junction temperatures where leakage increases exponentially.","metaTitle":"STPS30SM120SR Schottky Rectifier, 30 A, 120 V, Obsolete","metaDescription":"STPS30SM120SR 30 A, 120 V Schottky rectifier in TO-262 (I2PAK). Fast recovery ≤500 ns.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-262-3 Long Leads, I²Pak, TO-262AA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS30","Capacitance @ Vr, F":"-","Supplier Device Package":"I2PAK","Current - Reverse Leakage @ Vr":"275 µA @ 120 V","Voltage - DC Reverse (Vr) (Max)":"120 V","Current - Average Rectified (Io)":"30A","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"950 mV @ 30 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/eef385b549afb33e0a48d397691a4a2d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS30SM120SR/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for the STPS30SM120SR?","answer":"The evidence does not list an official STMicroelectronics replacement part number. For a form-fit-function substitute, look for a 30 A, 120 V Schottky rectifier in a through-hole TO-262 (I2PAK) package with similar forward voltage and leakage characteristics. A cross-reference search against the base product number STPS30 may yield a current-production sibling."},{"question":"Can I use the STPS30SM120SR in a 12 V power supply?","answer":"Yes. The 120 V reverse voltage rating provides ample margin for a 12 V rail, and the 30 A current rating covers most 12 V output stages. The 950 mV forward drop at 30 A is acceptable for a 12 V output, but the conduction loss should be factored into the thermal design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS30SM120SR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS30SM120SR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}