{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD790AT4","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD790AT4","canonicalUrl":"https://icboms.com/stmicroelectronics/STD790AT4","factsUrl":"https://icboms.com/api/mcp/products/STD790AT4","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STD790AT4, PNP bipolar transistor, 3 A Ic, 30 V Vce, 100 MHz fT, 15 W, DPAK surface mount, Tape & Reel.","salesMarkdown":"## PNP transistor in DPAK — 3 A, 30 V, 100 MHz The STMicroelectronics STD790AT4 is a PNP bipolar junction transistor in a surface-mount DPAK (TO-252) package, designed for medium-current switching and linear applications. The device is rated for a maximum power dissipation of 15 W, making it suitable for power management circuits, load switches, and driver stages in industrial and consumer equipment. No official successor part is listed by the manufacturer. ## Key ratings for the BOM decision The 3 A collector current rating defines the load-handling capability — this part can drive relays, solenoids, or medium-power loads directly. The 30 V Vce breakdown sets the maximum supply rail; designs operating from 12 V or 24 V rails have headroom. The 100 MHz transition frequency indicates adequate switching speed for PWM frequencies up to several hundred kilohertz. Saturation voltage is specified at 700 mV maximum at 100 mA base current and 3 A collector current, which matters for conduction loss in saturated-switch applications.","metaTitle":"STD790AT4 PNP Transistor, 3 A, 30 V, 100 MHz, DPAK","metaDescription":"STD790AT4 is an obsolete PNP bipolar transistor rated for 3 A collector current, 30 V Vce, 100 MHz transition frequency in DPAK.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR)","Power - Max":"15 W","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","Transistor Type":"PNP","lifecycle_stage":"eol_hot","Base Product Number":"STD790","Operating Temperature":"150°C (TJ)","Frequency - Transition":"100MHz","Supplier Device Package":"DPAK","Vce Saturation (Max) @ Ib, Ic":"700mV @ 100mA, 3A","Current - Collector (Ic) (Max)":"3 A","Current - Collector Cutoff (Max)":"10µA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"100 @ 500mA, 2V","Voltage - Collector Emitter Breakdown (Max)":"30 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/57b079be088b2dc6cb09017c18f25cba.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STD790AT4/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement or equivalent for STD790AT4?","answer":"No official replacement or equivalent is listed by STMicroelectronics. For a form-fit-function substitute, a parametric search for a PNP transistor in DPAK with 3 A collector current and 30 V Vce is recommended. The independent channel can also assist with cross-reference suggestions at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD790AT4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD790AT4 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}}