KTC3198-BL B1G

Single Bipolar Transistors Overview

The KTC3198-BL B1G is an NPN epitaxial planar silicon transistor in a TO-92 plastic package. It features a collector-emitter voltage of 50V, continuous collector current of 0.15A, and power dissipation of 0.5W. The BL rank specifies a DC current gain (hFE) range of 300 to 700 at VCE=6V, IC=2mA. Electrical characteristics include a collector-base cutoff current of 0.1µA max, transition frequency of 25MHz min, and saturation voltages of 0.25V (VCE) and 0.1V (VBE) under specified conditions.

Single Bipolar Transistors Feature Summary

• High DC current gain with BL classification providing 300 to 700 hFE
• Low noise performance suitable for audio frequency applications
• RoHS compliant and lead-free construction

Single Bipolar Transistors Applications

• General purpose switching circuits
• Audio frequency amplifiers

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and manufacturing site codes. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the BL gain bin with circuit design specifications to ensure adequate margin for high-gain applications.

Single Bipolar Transistors Selection Notes

Select this device when high current gain is required for low-level signal amplification or efficient switching control. The BL variant offers superior gain consistency compared to lower ranks. Consider thermal resistance limits and maximum junction temperature constraints during PCB layout and heat dissipation planning.

Single Bipolar Transistors Part Context

This component belongs to the KTC3198 series manufactured by Taiwan Semiconductor Corporation. The series includes O, Y, GR, and BL variants differentiated primarily by their DC current gain ranges. It is designed as a general-purpose small signal transistor for consumer electronics and industrial control applications requiring reliable NPN switching and amplification.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include KTC3198-O, KTC3198-Y, and KTC3198-GR from the same family, provided the application can accommodate their respective lower hFE ranges. Other generic NPN transistors with matching 50V VCEO and 0.15A IC ratings may serve as functional replacements if gain requirements are relaxed.

Single Bipolar Transistors FAQ

What is the DC current gain range for the BL rank?

The BL rank has a DC current gain (hFE) range of 300 to 700, measured at VCE=6V and IC=2mA.

Is the KTC3198-BL B1G RoHS compliant?

Yes, the datasheet confirms that the transistor is Pb-free and RoHS compliant.

What is the maximum collector-emitter voltage?

The maximum collector-emitter voltage (VCEO) is 50V.