{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS30L40CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS30L40CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS30L40CT","factsUrl":"https://icboms.com/api/mcp/products/STPS30L40CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS30L40CT, Schottky Diode, 1 Pair Common Cathode, 40 V, 15 A per diode, 550 mV Vf @ 15 A, Fast Recovery ≤500 ns, TO-220-3, Through Hole.","salesMarkdown":"The STPS30L40CT is a dual Schottky rectifier from STMicroelectronics, configured as a common-cathode pair in a single TO-220-3 through-hole package. The fast recovery characteristic (≤500 ns, >200 mA) suits it for high-frequency switching in power supplies, DC-DC converters, and OR-ing diodes in redundant power architectures. The 40 V reverse voltage rating is the maximum DC blocking voltage the diode can withstand in the off state. The 15 A per-diode average current is the continuous forward current each Schottky can handle at rated case temperature; the common-cathode pair can be paralleled for a total of 30 A if the PCB layout and heatsinking are designed for balanced current sharing. The 550 mV forward drop at 15 A is typical for a 40 V Schottky in this current class — lower than a pn-junction diode, which keeps conduction losses manageable in a high-current rail. The junction temperature limit is 150 °C maximum. The common-cathode configuration means the two anodes are independent, so the tab is electrically common with the cathode — keep that in mind for heatsink isolation or use an insulating pad.","metaTitle":"STPS30L40CT Schottky Diode, 40 V 15 A, TO-220-3, Obsolete","metaDescription":"STPS30L40CT dual common-cathode Schottky rectifier, 40 V, 15 A per diode, 550 mV Vf, TO-220-3.","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":"STPS30L40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Current - Reverse Leakage @ Vr":"360 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"550 mV @ 15 A","Current - Average Rectified (Io) (per Diode)":"15A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d460c713aad4be18d143992a3bfd5681.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS30L40CT/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the STPS30L40CT and how do I get a price?","answer":"The STPS30L40CT is obsolete and not available through normal distribution. We source it through our independent supply network. Submit an RFQ on this page; we will confirm availability and current pricing at quote time."},{"question":"Is the STPS30L40CT obsolete and what is a replacement?","answer":"Yes, STMicroelectronics lists the STPS30L40CT as obsolete. For a replacement, look for a common-cathode dual Schottky in TO-220-3 with a 40 V, 15 A rating — for example, the STPS30L40CW or similar from other manufacturers — but verify pin compatibility and thermal performance against your application."},{"question":"What are the specifications of the STPS30L40CT?","answer":"The STPS30L40CT is a dual common-cathode Schottky diode rated for 40 V reverse voltage, 15 A average rectified current per diode, 550 mV forward voltage drop at 15 A, and fast recovery ≤500 ns at >200 mA. It comes in a TO-220-3 through-hole package with a maximum junction temperature of 150 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS30L40CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS30L40CT 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}}