MMBT4126LT1G

Single Bipolar Transistors Overview

The MMBT4126LT1G is a single PNP bipolar junction transistor manufactured by onsemi. It features a maximum collector-emitter voltage of 25 V and a continuous collector current rating of 200 mA. The device operates within a junction temperature range of -55°C to 150°C and has a maximum power dissipation of 225 mW. Key electrical characteristics include a DC current gain (hFE) of at least 120 at 2 mA and 1 V, and a transition frequency of 250 MHz. The saturation voltage is specified as a maximum of 400 mV at 5 mA base and 50 mA collector currents. It is housed in a surface-mount SOT-23-3 package.

Single Bipolar Transistors Feature Summary

• Single PNP configuration for compact circuit integration
• High-speed operation with 250 MHz transition frequency
• Wide thermal operating range from -55°C to 150°C
• Low saturation voltage for efficient switching

Single Bipolar Transistors Applications

• General-purpose signal switching
• Low-power amplifier stages
• Logic interface circuits
• Driver applications for small loads

Single Bipolar Transistors Procurement Notes

Verify the complete part number including the suffix LT1G against official onsemi documentation to ensure correct packaging and compliance specifications. Confirm that the SOT-23-3 footprint matches the design requirements. Check for any recent Product Change Notifications regarding assembly or material changes. Ensure the component meets RoHS and REACH directives if required by the target application standards.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with 25 V breakdown and 200 mA current capability is needed in a small surface-mount package. Consider the 225 mW power dissipation limit for thermal management. Evaluate the hFE minimum of 120 for gain requirements. Compare against NPN alternatives like the MMBT4124 if complementary pairing is necessary. Verify the transition frequency suitability for the intended signal bandwidth.

Single Bipolar Transistors Part Context

This component belongs to the MMBT4126 series of small-signal PNP transistors. It is designed for general-purpose switching and amplification tasks. The device is part of onsemi's portfolio of discrete semiconductors. It complements other devices in the family, such as the NPN MMBT4124. The SOT-23-3 package allows for automated assembly and space-constrained designs.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.