{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"QST8TR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"QST8TR","canonicalUrl":"https://icboms.com/rohm/QST8TR","factsUrl":"https://icboms.com/api/mcp/products/QST8TR","rawCanonicalId":null},"summary":{"shortDescription":"ROHM QST8TR dual PNP transistor array, 12V Vce, 1.5A Ic, 400MHz fT, 200mV Vce(sat) at 500mA, TSMT6 (SC-95) package, surface mount.","salesMarkdown":"## Dual PNP in a TSMT6 footprint The ROHM QST8TR packs two PNP transistors into a single TSMT6 (SC-95) surface-mount package, saving board space compared to two discrete SOT-23s. Each transistor is rated for 12 V collector-emitter breakdown and 1.5 A continuous collector current, with a transition frequency of 400 MHz that supports moderate-speed switching and signal amplification up to the VHF range. The dual PNP configuration is useful for current-mirror loads, push-pull output stages, or driving two independent loads where the common-emitter topology is preferred over NPN. The 1.25 W total power dissipation (package-limited) means each transistor shares the thermal budget; for continuous operation above 500 mA per channel, the PCB copper area and ambient temperature need to be factored in. ## Switching and saturation performance A Vce(sat) of 200 mV at 500 mA collector current (with 25 mA base drive) keeps conduction losses low in saturated switching. The 100 nA maximum collector cutoff current (ICBO) at 25 °C means negligible leakage in off-state, important for battery-powered or high-impedance nodes. DC current gain (hFE) is a minimum of 270 at 200 mA, 2 V, providing good drive margin for logic-level base signals. The 400 MHz fT gives usable gain well into the tens of MHz, so the QST8TR can serve as a pre-driver for higher-power MOSFETs or as the active element in a 1–10 MHz DC-DC converter's error amplifier or level shifter. At 150 °C junction temperature rating, the part is specified for industrial environments where local heating from adjacent power components is expected. ## Package and thermal notes The TSMT6 (SC-95) is a thin SOT-23-6 variant with a 1.1 mm max height, suitable for low-profile designs. The 1.25 W power dissipation is the absolute maximum at 25 °C ambient; derating is required above that. For continuous 1 A switching, a layout with thermal vias under the package and a solid ground-plane copper pour is recommended to keep junction temperature within the 150 °C limit.","metaTitle":"QST8TR dual PNP transistor, 12V 1.5A, 400MHz, TSMT6","metaDescription":"ROHM QST8TR dual PNP transistor array: 12V Vce, 1.5A Ic, 400MHz fT, 200mV Vce(sat) at 500mA. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"1.25W","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6 Thin, TSOT-23-6","Transistor Type":"2 PNP (Dual)","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Frequency - Transition":"400MHz","Supplier Device Package":"TSMT6 (SC-95)","Vce Saturation (Max) @ Ib, Ic":"200mV @ 25mA, 500mA","Current - Collector (Ic) (Max)":"1.5A","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"270 @ 200mA, 2V","Voltage - Collector Emitter Breakdown (Max)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.65000","currency":"USD"},{"qty":10,"price":"$0.56000","currency":"USD"},{"qty":100,"price":"$0.41850","currency":"USD"},{"qty":500,"price":"$0.32882","currency":"USD"},{"qty":1000,"price":"$0.25408","currency":"USD"},{"qty":3000,"price":"$0.23166","currency":"USD"},{"qty":6000,"price":"$0.21672","currency":"USD"},{"qty":15000,"price":"$0.21150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1c2a97280b345c76b9ce1bef1e5cb9d1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the equivalent of QST8TR?","answer":"The QSX8TR is a complementary dual NPN array in the same TSMT6 package and 1.25 W power rating, but with a 30 V Vce and 320 MHz fT — it is not a direct PNP replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/QST8TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/QST8TR 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}}