{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS40SM120CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS40SM120CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS40SM120CT","factsUrl":"https://icboms.com/api/mcp/products/STPS40SM120CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS40SM120CT, dual common-cathode Schottky rectifier, 120 V Vr, 20 A average per diode, 830 mV Vf at 20 A, Fast Recovery ≤500 ns, TO-220-3 through-hole package.","salesMarkdown":"## Dual Schottky rectifier for 120 V rails — what the ratings mean The fast recovery characteristic (≤500 ns, >200 mA) is typical for a Schottky barrier; the switching losses are low enough for 50–100 kHz SMPS designs without a snubber. Procurement for the STPS40SM120CT goes through the surplus and broker channel. ## Common-cathode pair — board-level fit The two diodes share a common cathode (pin 2 and tab), with the anodes on pins 1 and 3 — the standard pinout for a TO-220 dual rectifier used in center-tap full-wave rectifiers or OR-ing configurations. Reverse leakage at 120 V is 275 µA — this rises with junction temperature and should be factored into the standby loss budget for a 120 V rail.","metaTitle":"STPS40SM120CT Schottky Rectifier, 120 V, 20 A per Diode","metaDescription":"STPS40SM120CT dual common-cathode Schottky rectifier, 120 V reverse, 20 A per diode, 830 mV Vf at 20 A, TO-220.","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","Diode Type":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Current - Reverse Leakage @ Vr":"275 µA @ 120 V","Voltage - DC Reverse (Vr) (Max)":"120 V","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"830 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d188d97cdd690a960f4d04ed0719b4e0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS40SM120CT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS40SM120CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS40SM120CT 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}}