FMMTL618TA

Single Bipolar Transistors Overview

The FMMTL618TA is an NPN silicon planar high gain medium power transistor manufactured by Diodes Incorporated. It is housed in a SOT-23 surface-mount package and features a collector-emitter breakdown voltage of 20V, a continuous collector current rating of 1.25A, and a peak pulse current capability of 4A. The device dissipates up to 500mW at 25°C ambient temperature and operates within a junction temperature range of -55°C to +150°C. Its complementary PNP counterpart is the FMMTL718.

Single Bipolar Transistors Feature Summary

• Very low equivalent on-resistance providing efficient conduction under load
• High static forward current transfer ratio for effective signal amplification
• Designed for robust operation across extended industrial temperature ranges

Single Bipolar Transistors Applications

• General-purpose switching applications
• Medium power amplifier circuits
• Complementary pairs with FMMTL718 in push-pull configurations

Single Bipolar Transistors Procurement Notes

Verify the component marking L68 on the physical device to confirm authenticity against the official Diodes Incorporated datasheet. Ensure the ordering suffix TA corresponds to the required tape-and-reel packaging configuration before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when a compact SOT-23 footprint is required alongside a 1.25A continuous current capacity. The 20V collector-emitter voltage rating defines its suitability for low-voltage logic interfacing and power management tasks requiring moderate drive capabilities.

Single Bipolar Transistors Part Context

This part belongs to the FMMT series of small-signal bipolar transistors produced by Diodes Incorporated (formerly Zetex). The series utilizes silicon planar technology optimized for high gain and low saturation voltages within standard surface-mount packages suitable for automated assembly processes.

Single Bipolar Transistors Replacement Considerations

The FMMTL718 serves as the designated complementary PNP type within the same product family. Verify pinout compatibility and matching electrical characteristics if substituting or pairing components in circuit designs.

Single Bipolar Transistors FAQ

What is the maximum collector-base breakdown voltage?

The absolute maximum collector-base breakdown voltage is rated at 60V.

How does the transition frequency compare at different currents?

The transition frequency is specified at 195MHz when measured at a collector current of 50mA and a collector-emitter voltage of 10V.

What is the typical collector-emitter saturation voltage at full load?

At a collector current of 1.25A with a base current of 100mA, the collector-emitter saturation voltage typically reaches 170mV.