{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EMB51T2R","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"EMB51T2R","canonicalUrl":"https://icboms.com/rohm/EMB51T2R","factsUrl":"https://icboms.com/api/mcp/products/EMB51T2R","rawCanonicalId":null},"summary":{"shortDescription":"ROHM EMB51T2R, dual PNP pre-biased transistor, 50V VCEO, 150mW, 250MHz ft, 22kΩ base and emitter-base resistors, SOT-563/EMT6 package, surface mount.","salesMarkdown":"## Two PNP pre-biased transistors in one SOT-563 The ROHM EMB51T2R packs two PNP pre-biased transistors into a single SOT-563 package, each with integrated 22kΩ base and emitter-base resistors. This is a space-saving building block for base-current-limited switching in low-power signal paths — think level shifters, logic inverters, or load switches where you want to drop the external bias resistor pair. The 50V collector-emitter breakdown gives headroom for 24V or 48V industrial rails, though the 150mW total power limit and 30mA max collector current keep it in the signal-level domain, not power switching. ## 22kΩ bias network — what it sets Both R1 and R2 are 22kΩ, so the base is biased through a voltage divider that turns the transistor on when the input exceeds roughly half the supply. The 250MHz transition frequency means it handles a few MHz of switching without issue. Saturation voltage is 150mV at 500µA base and 5mA collector — useful for driving a logic input or a small LED without wasting rail headroom. ## Active, ROHS3, and ready to quote No last-time-buy or obsolescence concern here — it is a current-production part.","metaTitle":"EMB51T2R Dual PNP Pre-Biased Transistor, 50V, 150mW, SOT-563","metaDescription":"EMB51T2R dual PNP pre-biased transistor pair in SOT-563. 50V VCEO, 150mW max, 250MHz ft. Active, ROHS3 compliant.","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":"150mW","Mounting Type":"Surface Mount","Package / Case":"SOT-563, SOT-666","Transistor Type":"2 PNP - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"22kOhms","Frequency - Transition":"250MHz","Supplier Device Package":"EMT6","Resistor - Emitter Base (R2)":"22kOhms","Vce Saturation (Max) @ Ib, Ic":"150mV @ 500µA, 5mA","Current - Collector (Ic) (Max)":"30mA","Current - Collector Cutoff (Max)":"500nA","DC Current Gain (hFE) (Min) @ Ic, Vce":"60 @ 5mA, 10V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.48000","currency":"USD"},{"qty":10,"price":"$0.35600","currency":"USD"},{"qty":100,"price":"$0.20170","currency":"USD"},{"qty":500,"price":"$0.13356","currency":"USD"},{"qty":1000,"price":"$0.10240","currency":"USD"},{"qty":2000,"price":"$0.08904","currency":"USD"},{"qty":8000,"price":"$0.08014","currency":"USD"},{"qty":16000,"price":"$0.07123","currency":"USD"},{"qty":24000,"price":"$0.06678","currency":"USD"},{"qty":56000,"price":"$0.06300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/68db3ea2a78abbd3ccb5013999d132ca.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the EMB51T2R used for?","answer":"This dual PNP pre-biased transistor pair is used for base-current-limited switching in low-power signal paths — level shifters, logic inverters, load switches, and general-purpose interface circuits where you want to eliminate external bias resistors."},{"question":"Can EMB51T2R be used in SOT-563 footprint?","answer":"Yes. The EMB51T2R is specified for the SOT-563 and SOT-666 package cases, with the EMT6 supplier device package. The SOT-563 footprint is the standard land pattern for this part."},{"question":"What is the closest functional second-source for EMB51T2R?","answer":"The EMH61T2R is a complementary NPN dual pre-biased pair in the same SOT-563 package with 10kΩ resistors. For a PNP-to-PNP match, the EMB2T2R uses 47kΩ resistors and a 300mV saturation voltage — same package, different bias threshold. Neither is a drop-in replacement; check the resistor values against your circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/EMB51T2R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/EMB51T2R 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}}