MMBT4403

Single Bipolar Transistors Overview

The MMBT4403 is a PNP silicon epitaxial planar transistor designed for switching and amplifier applications. It features a maximum collector current of 600 mA and a collector-emitter breakdown voltage of 40 V. The device utilizes a SOT-23 surface-mount package, offering a compact form factor suitable for space-constrained designs. Key electrical characteristics include a transition frequency of 200 MHz and a minimum DC current gain of 100 at specific test conditions.

Single Bipolar Transistors Feature Summary

• Epitaxial planar construction optimized for high-speed switching and linear amplification tasks.
• Compact SOT-23 surface-mount footprint enables efficient board space utilization in dense layouts.
• Designed as the complementary counterpart to NPN transistors for push-pull circuit configurations.

Single Bipolar Transistors Applications

• General-purpose signal switching circuits
• Medium power amplification stages
• Complementary pairs with NPN transistors

Single Bipolar Transistors Procurement Notes

Verify the manufacturer designation carefully, as MMBT4403 is a generic part number produced by multiple vendors including onsemi, Vishay, and others. Confirm the specific datasheet matches your required pinout and thermal specifications. Ensure RoHS compliance status aligns with project requirements before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a low-voltage, medium-current PNP switch is required in a small outline package. Compare hFE ranges and saturation voltages across different manufacturers to ensure compatibility with drive circuitry. Verify that the 40V rating exceeds the maximum operating voltage in the target application.

Single Bipolar Transistors Part Context

This component belongs to the family of general-purpose small-signal bipolar junction transistors. It serves as the PNP equivalent to the widely used MMBT4401 NPN transistor. The series is commonly utilized in consumer electronics and industrial control boards where reliable switching performance in a minimal package is essential.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include MMBT4401LT1G (NPN complement), MMST4403-TP, and MMBT4403WT1G. Verify pinout compatibility and thermal dissipation capabilities before swapping between different package variants or manufacturers.