MMBT918LT1G

Overview

The MMBT918LT1G is a dual NPN bipolar junction transistor manufactured by onsemi, housed in an SOT-23 surface-mount package. It features a maximum collector current of 50 mA and a collector-emitter voltage rating of 15 V. The device operates within a temperature range from -55°C to +150°C with a power dissipation capacity of 225 mW. Designed for general-purpose switching and amplification applications, this component utilizes silicon technology and offers a compact form factor suitable for space-constrained electronic circuits.

Feature Summary

• Dual NPN configuration integrated into a single compact SOT-23 package
• High thermal stability supporting operation up to 150°C
• Optimized for low-voltage general-purpose switching tasks

Applications

• General-purpose signal switching
• Low-power amplification stages
• Digital logic interface circuits

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with onsemi or authorized distributors before integration. Confirm that the SOT-23 pinout matches your PCB footprint design requirements. Ensure thermal management strategies account for the 225 mW power dissipation limit under expected operating conditions to maintain reliability.

Selection Notes

Select this component when a dual NPN configuration is required in a minimal footprint. Compare against single-transistor alternatives if only one channel is needed to optimize board space. Consider the 15 V voltage rating and 50 mA current limits to ensure suitability for the target circuit's electrical demands without exceeding absolute maximum ratings.

Part Context

This part belongs to onsemi's MMBT series of small-signal transistors. The LT1G suffix typically indicates tape-and-reel packaging and lead-free composition. It serves as a compact alternative to through-hole dual transistor packages, enabling higher density assembly in modern consumer and industrial electronics manufacturing processes.

Replacement Considerations

Direct functional substitutes include other dual NPN SOT-23 transistors such as the BC847DWT1G or MMBD914LT1G (if diode compatibility allows). Verify pinout compatibility and electrical parameter margins before substitution to ensure circuit performance remains within specifications.