FMW3T148

Single Bipolar Transistors Overview

The FMW3T148 is a dual NPN digital transistor manufactured by ROHM Semiconductor, designed for surface-mount applications in the SOT-25-5 package. It features a maximum collector-emitter voltage (VCEO) of 120 V and a continuous collector current of 50 mA. The device integrates internal bias resistors with a typical input resistance of 10 kOhms, facilitating direct interfacing with logic circuits. Key electrical specifications include a minimum DC current gain (hfe) of 68 at specified test conditions and a power dissipation rating of 300 mW. The component supports a maximum operating frequency of 250 MHz and operates within a temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Integrates dual NPN transistors with built-in bias resistors for simplified circuit design
• Provides high voltage isolation capability suitable for switching applications up to 120 V
• Optimized for surface-mount technology with compact SOT-25-5 packaging

Single Bipolar Transistors Applications

• General-purpose switching circuits in consumer electronics
• Interface drivers for logic-to-power signal conversion
• Amplification stages in low-power analog systems

Single Bipolar Transistors Procurement Notes

Verify component authenticity through authorized distribution channels due to the NRND status. Confirm RoHS compliance and REACH registration requirements prior to integration. Ensure storage conditions adhere to moisture sensitivity level 1 standards. Validate that the specific batch matches the datasheet parameters for voltage and current ratings. Request official documentation from the manufacturer to confirm end-of-life implications for long-term production planning.

Single Bipolar Transistors Selection Notes

Consider the 120 V breakdown voltage when selecting this component for high-side switching applications. Evaluate the 50 mA current limit against load requirements to prevent thermal overload. The integrated resistor values reduce external component count but may affect switching speed compared to discrete solutions. Assess the SOT-25-5 footprint compatibility with existing PCB layouts. Review the thermal dissipation characteristics given the 300 mW power rating in enclosed environments.

Single Bipolar Transistors Part Context

This part belongs to ROHM's FMW series of dual digital transistors, which are engineered for space-constrained designs requiring multiple switching functions. The series emphasizes reliability and ease of use by combining transistor and resistor elements into a single package. As a general-purpose BJT variant, it serves as a foundational component in various electronic assemblies where moderate voltage handling and compact form factors are prioritized over high-frequency RF performance.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers: None identified.