FMA2AT148

Overview

The FMA2AT148 is a dual pre-biased digital transistor featuring two PNP transistors in an SMT-5 package. It supports a collector-emitter voltage of -50V and continuous collector current of -30mA. The device includes integrated base resistors with typical values of 1kΩ and 10kΩ. Key electrical parameters include a minimum DC current gain (hFE) of 60 at -5mA, -5V, and a transition frequency of 250MHz. Power dissipation is rated at 300mW, with a maximum operating temperature of +150°C.

Feature Summary

• Integrates two PNP transistors with built-in biasing resistors for simplified circuit design
• Optimized for high-speed switching applications with a 250MHz transition frequency
• Compact surface-mount packaging suitable for space-constrained layouts

Applications

• General-purpose signal switching circuits
• Driver stages for logic interfaces
• High-frequency oscillation circuits

Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm pinout compatibility and electrical ratings before integration. Ensure that the selected component meets the required thermal dissipation standards for the intended operating environment. Cross-reference official datasheets to validate resistor values and gain specifications against system requirements.

Selection Notes

Select this component when a dual PNP configuration with integrated biasing is required for compact designs. Consider the -50V voltage rating and -30mA current limit to ensure adequate headroom for the application. Evaluate the 300mW power dissipation capability relative to the expected thermal load and ambient conditions during operation.

Part Context

This part belongs to ROHM's series of pre-biased digital transistors, which combine bipolar junction transistors with internal resistors. These components are designed to reduce external component count and simplify PCB layout. The SMT-5 package provides a small footprint while maintaining reliable performance for general electronic applications.

Replacement Considerations

Consult official substitution lists for compatible equivalents. Verify that any alternative maintains identical polarity, voltage ratings, and package dimensions to ensure mechanical and electrical compatibility without redesign.