FMG9AT248

Overview

The FMG9AT248 is a dual NPN digital transistor manufactured by ROHM Semiconductor, designed for surface-mount applications in the SMT-5 package. It integrates two NPN transistors with built-in bias resistors to simplify circuit design and reduce component count. Key electrical specifications include a collector-emitter voltage (VCEO) of 50V and a continuous collector current (IC) of 100mA. The device features a typical base resistor (R1) of 10 kOhms and an emitter resistor (R2) of 10 kOhms. It offers a DC current gain (hFE) of at least 30 at 5mA and 5V, with a transition frequency (fT) of 250MHz and a maximum power dissipation (Pd) of 300mW.

Feature Summary

• Dual NPN configuration with integrated pre-bias resistors for simplified driving circuits
• High-speed switching capability supported by a 250MHz transition frequency
• Compact SMT-5 surface-mount package optimized for space-constrained PCB layouts

Applications

• General-purpose switching circuits in consumer electronics
• Driver stages for logic interfaces and level shifting
• Power management control signals in portable devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to procurement. Ensure the selected variant matches the required thermal and electrical ratings for the target application environment.

Selection Notes

Select this component when a dual NPN solution with integrated biasing is required to minimize board space and assembly steps. Compare the 50V VCEO and 100mA IC limits against the circuit's peak operating conditions. Consider the 10kOhm internal resistor values for base drive compatibility with standard logic families. Evaluate the SMT-5 package thermal characteristics against the expected power dissipation in the final enclosure.

Part Context

The FMG9AT248 belongs to the FMG9A series of digital transistors from ROHM Semiconductor. This series is engineered to replace discrete resistor-transistor networks, offering improved reliability and reduced footprint. The part is commonly used in automotive and industrial applications where compact, high-reliability switching elements are necessary for signal processing and control tasks.

Replacement Considerations

Consult the ROHM FMG9A series replacement guide for cross-reference options. Verify pinout compatibility and electrical parameter equivalence before substituting with similar dual NPN digital transistors from other manufacturers.