{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EMH61T2R","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"EMH61T2R","canonicalUrl":"https://icboms.com/rohm/EMH61T2R","factsUrl":"https://icboms.com/api/mcp/products/EMH61T2R","rawCanonicalId":null},"summary":{"shortDescription":"ROHM EMH61T2R dual NPN pre-biased transistor, 50V VCEO, 150mW, 250MHz fT, R1=R2=10kΩ, SOT-563/EMT6 package, surface mount.","salesMarkdown":"## Dual NPN pre-biased transistor — R1=R2=10kΩ, 150mW, SOT-563 The ROHM EMH61T2R packs two NPN pre-biased transistors into a single SOT-563 package (also designated EMT6), each with 10kΩ base and 10kΩ emitter-base resistors integrated on-chip. This is the part you reach for when a board needs a couple of low-current digital switches — relay drivers, level shifters, or logic inverters — and you want to cut the resistor count from four passives to one tiny six-pin device. Collector current is rated 50mA max, collector-emitter breakdown at 50V, and the transition frequency hits 250MHz, so it handles modest-speed switching cleanly. Maximum power dissipation is 150mW for the whole package — that's the thermal ceiling for the SOT-563 footprint, so keep the total current through both transistors within that budget. The 150mW max power rating is the hard limit for this tiny SOT-563 package. At 50V VCE, 5mA collector current per transistor (10mA total) you're already at 500mW if both transistors are saturated — that's over three times the package limit. In practice, this part is for signal-level loads: driving a few milliamps into an LED, switching a relay coil via a transistor buffer, or pulling a logic line low. If you need to switch more than about 10mA continuous per channel, step up to a larger package like SOT-23 or SOT-323. The 150mV saturation voltage at 500µA base, 5mA collector is tight — good for low-drop switching. ROHS3 compliant.","metaTitle":"ROHM EMH61T2R Dual NPN Pre-Biased Transistor, 50V, 150mW","metaDescription":"ROHM EMH61T2R dual NPN pre-biased transistor with integrated 10kΩ resistors, 50V VCEO, 150mW max power, 250MHz fT. SOT-563/EMT6 package. Active lifecycle.","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 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"10kOhms","Frequency - Transition":"250MHz","Supplier Device Package":"EMT6","Resistor - Emitter Base (R2)":"10kOhms","Vce Saturation (Max) @ Ib, Ic":"150mV @ 500µA, 5mA","Current - Collector (Ic) (Max)":"50mA","Current - Collector Cutoff (Max)":"500nA","DC Current Gain (hFE) (Min) @ Ic, Vce":"35 @ 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/dcd88072fd2d63df4f441fbb6fdb9fdf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent to EMH61T2R?","answer":"The EMH75T2R is the closest functional peer — same dual NPN pre-biased topology, same 150mW power and 250MHz fT, but with different bias resistors: R1=4.7kΩ, R2=47kΩ versus the EMH61T2R's 10kΩ-10kΩ. The resistor ratio changes the on-threshold, so check your base drive requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/EMH61T2R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/EMH61T2R 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}}