FMA9AT148

Overview

The FMA9AT148 is a dual PNP digital transistor from ROHM Semiconductor, integrating two DTA114E chips within a single SMT5 (SOT-25) surface-mount package. It features a collector-emitter voltage of -50V and a continuous collector current of -100mA per element. The device includes built-in bias resistors with typical values of 10 kOhms for both R1 and R2. Key electrical characteristics include a minimum DC current gain (hFE) of 30 at -10mA and -5V, a transition frequency of 250MHz, and a maximum power dissipation of 300mW. The unit operates up to +150°C junction temperature.

Feature Summary

• Integrates two independent PNP digital transistors into a compact SMT5 package to reduce mounting area and cost.
• Includes built-in bias resistors to simplify circuit design and minimize external component count.
• Optimized for high-speed switching applications with a transition frequency of 250MHz.

Applications

• Differential amplifier circuits
• High-frequency crystal oscillator drivers
• General-purpose switching logic interfaces

Procurement Notes

Verify the specific suffix T148 corresponds to the tape-and-reel packaging format required for automated assembly lines. Confirm RoHS compliance status through the official datasheet or manufacturer certification documents prior to finalizing procurement specifications. Ensure the ordering quantity aligns with standard factory pack sizes to avoid cut-tape premiums.

Selection Notes

Select this component when space constraints require dual PNP switching functionality in a minimal footprint. Compare against single-transistor alternatives to evaluate board area savings versus potential thermal density increases. Verify that the 10kOhm internal resistor values match the driving interface requirements without additional external pull-up or pull-down networks.

Part Context

This part belongs to the FMA9A series of complex digital transistors manufactured by ROHM Semiconductor. It serves as a direct replacement for discrete configurations using two separate DTA114E transistors. The SMT5 package provides a standardized form factor compatible with existing surface-mount assembly processes used in consumer and industrial electronics.

Replacement Considerations

The UMZ1NTR is listed as a similar alternative by distributors, though it combines NPN and PNP types rather than dual PNP. Direct functional substitutes within the same polarity configuration should be verified against pinout compatibility and electrical parameter tolerances before substitution.