{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FMG4AT148","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"FMG4AT148","canonicalUrl":"https://icboms.com/rohm/FMG4AT148","factsUrl":"https://icboms.com/api/mcp/products/FMG4AT148","rawCanonicalId":null},"summary":{"shortDescription":"ROHM FMG4AT148 dual NPN pre-biased transistor, 2 NPN - Pre-Biased (Dual), 50 V Vce, 100 mA Ic, 300 mW, SC-74A SMT5, Tape & Reel.","salesMarkdown":"## Dual pre-biased NPN — built-in base resistors cut external BOM The FMG4AT148 from ROHM packs two NPN transistors with integrated 10 kΩ base resistors (R1) into a single SC-74A (SMT5) package. Each transistor handles up to 100 mA collector current with a 50 V collector-emitter breakdown, suiting it for low-side switching, logic-level translation, and gate-drive pull-downs in industrial and consumer PCBs where board space is tight. The pre-biased design eliminates two external resistors per channel, shrinking the footprint and reducing placement cost. ## 300 mW dissipation in SC-74A — thermal budget for dense layouts At 300 mW total power dissipation, the FMG4AT148 is rated for continuous operation in ambient conditions typical of indoor and outdoor telecom or appliance controllers. The SC-74A (SOT-753) footprint measures roughly 2.9 mm × 1.6 mm, so the dual device keeps the per-channel dissipation below 150 mW when both transistors are active. For designs that push near the 100 mA per channel, the derating curve in the datasheet (available on request) should be checked against the maximum ambient temperature. For dual-sourcing, the UMG4NTR (also a dual NPN pre-biased with 10 kΩ base resistors) offers a functional alternative in a smaller 150 mW package, though the power rating differs.","metaTitle":"FMG4AT148 dual NPN pre-biased transistor, 300 mW, SC-74A","metaDescription":"FMG4AT148 dual NPN pre-biased transistor with 10kΩ base resistors, 300 mW in SC-74A. Active lifecycle, 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":"300mW","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Transistor Type":"2 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"10kOhms","Frequency - Transition":"250MHz","Supplier Device Package":"SMT5","Vce Saturation (Max) @ Ib, Ic":"300mV @ 1mA, 10mA","Current - Collector (Ic) (Max)":"100mA","DC Current Gain (hFE) (Min) @ Ic, Vce":"100 @ 1mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.53","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.53000","currency":"USD"},{"qty":10,"price":"$0.43300","currency":"USD"},{"qty":100,"price":"$0.29510","currency":"USD"},{"qty":500,"price":"$0.22132","currency":"USD"},{"qty":1000,"price":"$0.16600","currency":"USD"},{"qty":3000,"price":"$0.15216","currency":"USD"},{"qty":6000,"price":"$0.14294","currency":"USD"},{"qty":15000,"price":"$0.13372","currency":"USD"},{"qty":30000,"price":"$0.13050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a4e79c817c99f94a296a39487561aec6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum power dissipation of FMG4AT148?","answer":"The FMG4AT148 is rated for 300 mW total power dissipation in the SC-74A package."},{"question":"Is there an equivalent or replacement for FMG4AT148?","answer":"The UMG4NTR is a functional alternative — also a dual NPN pre-biased transistor with 10 kΩ base resistors, but rated for 150 mW in a smaller package. Check the power budget before substituting."},{"question":"Is FMG4AT148 RoHS compliant?","answer":"Yes, the FMG4AT148 is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/FMG4AT148","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/FMG4AT148 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}}