FMG3AT148 ROHM Semiconductor Transistor BJT NPN (SOT23 (5-Pin)) In Stock
ROHM FMG3AT148 is a dual NPN digital transistor array in a compact 5-pin SC-74A (SOT-363) package, each element featuring a built-in base resistor network with 47 kΩ input and 47 kΩ base-emitter resistors, rated at 50 V collector-emitter voltage and 100 mA collector current. It simplifies transistor switch circuit design by eliminating external resistors in logic-level switching applications. Available in stock with global distribution.
- Manufacturer
- ROHM Semiconductor
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- FMG3AT148 Datasheet PDF
- Category
- Transistor BJT NPN
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual NPN transistor configuration with built-in 47 kΩ input and 47 kΩ base-emitter resistors eliminating external resistor components in switching circuits
- 50 V collector-emitter breakdown voltage and 100 mA maximum collector current per element for logic-level load switching at 3.3 V or 5 V
- Compact 5-pin SC-74A (SOT-363) package enabling dual-transistor integration in space-constrained PCB designs with minimal footprint
Applications
The FMG3AT148 is used in LED indicator drivers, relay coil switches, and logic-level signal inversion circuits where two independent NPN transistor switches with built-in bias resistors are needed in a single 5-pin surface mount package. It is well suited for microcontroller output buffer stages, display backlight control, and low-side switch arrays in consumer electronics, industrial control panels, and IoT devices operating from 3.3 V or 5 V logic rails up to 50 V load switching.
Specifications
| Pbfree Code | Yes |
| YTEOL | 7 |
| Additional Feature | DIGITAL |
| Collector Current-Max (IC) | 0.1A |
| Collector-Emitter Voltage-Max | 50V |
| Configuration | COMMON EMITTER, 2 ELEMENTS WITH BUILT-IN RESISTOR |
| DC Current Gain-Min (hFE) | 100 |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e1 |
| Number of Elements | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | NPN |
| Power Dissipation-Max (Abs) | 0.3W |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 10 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Transition Frequency-Nom (fT) | 250MHz |
| VCEsat-Max | 0.3V |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What built-in resistor network does the FMG3AT148 include, and how does it simplify switching circuit design?
The FMG3AT148 integrates 47 kΩ input resistors and 47 kΩ base-emitter resistors in each of its 2 NPN transistor elements. These built-in resistors set the base drive current automatically when connected to a 3.3 V or 5 V logic output, eliminating the need for external discrete resistors and reducing component count from 6 parts (2 transistors plus 4 resistors) to a single 5-pin SC-74A device, saving PCB area and assembly cost.
What are the maximum voltage and current ratings of the FMG3AT148, and what load types can it drive?
Each NPN element in the FMG3AT148 is rated at 50 V collector-emitter breakdown voltage (VCEO) and 100 mA maximum collector current (IC). These ratings are sufficient to drive small signal loads such as LEDs at up to 20 mA per channel, relay coils drawing 50–80 mA at 12 V or 24 V, and logic-level indicator lamps, all controlled directly from 3.3 V or 5 V microcontroller GPIO pins without additional buffer circuitry.
How does the FMG3AT148 compare to using two discrete NPN transistors with external resistors for a dual-switch application?
The FMG3AT148 replaces two discrete NPN transistors and four external bias resistors with a single 5-pin SC-74A package measuring approximately 2.0 mm x 2.1 mm. This integration reduces BOM item count by 5 components and cuts the PCB footprint for the dual-switch function by more than 60% compared to placing two SOT-23 transistors and four 0402 resistors separately, making it particularly advantageous in space-constrained IoT modules and mobile device designs.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About ROHM Semiconductor
ROHM Semiconductor is a leading electronic component manufacturer. FindMyChip sources ROHM Semiconductor ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”