FMA4AT148

Overview

The FMA4AT148 is a dual complex transistor from ROHM Semiconductor, integrating two PNP transistors within a single SMT-5 (SC-74A) surface-mount package. It operates with a collector-emitter voltage of -50V and supports a continuous collector current of -0.1A per device. The component features typical input resistances of 1kΩ and 10kΩ for its respective internal transistors. Power dissipation is rated at 0.3W, with an operating temperature range spanning from -55°C to +150°C. This configuration allows for space-efficient circuit designs requiring dual PNP switching or amplification functions.

Feature Summary

• Integrates two independent PNP transistors into a compact SMT-5 package
• Includes built-in input resistors to simplify biasing network design
• Supports high-temperature operation up to 150°C junction temperature

Applications

• Differential amplifier circuits
• High-frequency crystal oscillator drivers
• General-purpose switching applications in consumer electronics

Procurement Notes

Verify the obsolete status before procurement as this part may be discontinued. Confirm availability through authorized distributors only. Ensure the ordering suffix matches the required tape-and-reel quantity. Check RoHS compliance documentation for specific regulatory requirements. Validate that the SMT-5 package dimensions fit the target PCB layout constraints.

Selection Notes

Select this component when a dual PNP configuration is required in a minimal footprint. Compare input resistance values against circuit biasing needs. Ensure the -50V rating exceeds the maximum expected collector-emitter voltage. Verify that the 0.3W power dissipation limit accommodates thermal conditions. Consider equivalent single-transistor alternatives if dual functionality is not strictly necessary.

Part Context

The FMA4AT148 belongs to ROHM's FM series of digital/dual transistors. It serves as a compact alternative to discrete dual-transistor assemblies. The SMT-5 package corresponds to the JEITA SC-74A standard. This series is designed for applications where board space is limited and multiple transistor functions are needed.

Replacement Considerations

The DTA114T is listed as an equivalent single-part reference. No direct dual-PNP replacement is explicitly confirmed in the provided data. Verify pinout compatibility if substituting with other dual-transistor arrays.