FMA11AT148

Overview

The FMA11AT148 is a dual pre-biased PNP digital transistor manufactured by ROHM Semiconductor. It integrates two PNP transistors with internal bias resistors within a single SMT5 surface-mount package. The device supports a collector-emitter voltage of 50 V and a continuous collector current of 100 mA. Key electrical characteristics include a DC current gain (hFE) minimum of 80 at 10 mA, a transition frequency of 250 MHz, and a power dissipation rating of 300 mW. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates two PNP transistors with built-in bias resistors in a compact SMT5 package
• Simplifies circuit design by reducing external component count and board space requirements
• Provides high-speed switching capability with a transition frequency of 250 MHz

Applications

• General-purpose signal switching and logic interface circuits
• Driver stages for relays, solenoids, or small loads
• Level shifting between different logic voltage domains

Procurement Notes

Verify the specific suffix 'A' and package marking against the official ROHM datasheet to ensure correct polarity and pinout configuration. Confirm that the SMT5 footprint matches the target PCB layout dimensions. Check for end-of-life notifications or recommended new design status prior to finalizing procurement plans.

Selection Notes

Select this component when a dual PNP configuration with integrated biasing is required to minimize assembly costs and reduce circuit complexity. Ensure the application voltage does not exceed 50 V and the load current remains within the 100 mA limit. Consider thermal management requirements given the 300 mW power dissipation constraint in the SMT5 package.

Part Context

The FMA11AT148 belongs to ROHM's family of pre-biased bipolar transistors designed to replace discrete resistor-transistor networks. These devices are engineered to streamline the design of digital switching applications by providing a ready-to-use amplification stage. The SMT5 packaging allows for efficient automated placement in high-volume manufacturing environments.

Replacement Considerations

The FMG5AT148 serves as a functional substitute but utilizes NPN polarity instead of PNP. Designers must verify circuit topology compatibility before swapping components. No direct PNP equivalent with identical specifications was identified in the provided documentation.