{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2STD1665T4","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"2STD1665T4","canonicalUrl":"https://icboms.com/stmicroelectronics/2STD1665T4","factsUrl":"https://icboms.com/api/mcp/products/2STD1665T4","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics 2STD1665T4 NPN transistor, 65 V Vce, 6 A Ic, 15 W max, DPAK (TO-252-3) package, Tape & Reel.","salesMarkdown":"## Active production, 65 V / 6 A switching envelope The 2STD1665T4: Housed in the DPAK (TO-252-3) surface-mount package, the device's exposed tab provides a low thermal path to the PCB copper plane, supporting the 15 W maximum power dissipation when the board layout provides adequate heatsinking. ## Vce(sat) and hFE at load current With a typical Vce(sat) of 380 mV at 300 mA base drive and 6 A collector current, the conduction loss at full load stays under 2.3 W — the junction temperature rise from this loss, plus ambient, must stay within the 150°C TJ maximum rating. DC current gain is specified at a minimum of 150 at 2 A, 1 Vce, meaning the device maintains useful gain well into the linear region — relevant for pre-regulator pass elements or solenoid drivers where the transistor operates in saturation rather than as a switch. ## Off-state leakage and compliance Collector cutoff current is 50 nA maximum, which keeps the off-state leakage negligible in battery-powered or high-impedance load circuits where even microamps matter. ROHS3 compliant per the manufacturer's declaration, with no exemption conflicts for the DPAK package's leadframe finish.","metaTitle":"2STD1665T4 NPN Transistor, 65V 6A DPAK, STMicroelectronics","metaDescription":"STMicroelectronics 2STD1665T4 NPN transistor, 65V Vce, 6A Ic, 15W max, DPAK package. Active production, ROHS3 compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"15 W","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Supplier Device Package":"DPAK","Vce Saturation (Max) @ Ib, Ic":"380mV @ 300mA, 6A","Current - Collector (Ic) (Max)":"6 A","Current - Collector Cutoff (Max)":"50nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"150 @ 2A, 1V","Voltage - Collector Emitter Breakdown (Max)":"65 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.06","priceTiers":[{"qty":1,"price":"$1.06000","currency":"USD"},{"qty":10,"price":"$0.86800","currency":"USD"},{"qty":100,"price":"$0.67510","currency":"USD"},{"qty":500,"price":"$0.57224","currency":"USD"},{"qty":1000,"price":"$0.46615","currency":"USD"},{"qty":2500,"price":"$0.43882","currency":"USD"},{"qty":5000,"price":"$0.41793","currency":"USD"},{"qty":12500,"price":"$0.39864","currency":"USD"},{"qty":25000,"price":"$0.39788","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a85a308f6247beb37f50cb8cf4db5f22.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/2STD1665T4/alternatives.json"},"ai":{"faq":[{"question":"Will 2STD1665T4 drop into a board laid out for 2STN1550 without rewiring?","answer":"Both parts share the DPAK (TO-252-3) footprint, so the PCB pad layout is identical. The key difference is the 2STD1665T4's higher Vce (65 V vs 50 V) and Ic (6 A vs 5 A) ratings — if the original design used the 2STN1550 near its limits, the 2STD1665T4 provides additional margin without a board spin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/2STD1665T4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/2STD1665T4 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}}