2N3440U4

Single Bipolar Transistors Overview

The Microchip Technology 2N3440U4 is a single NPN bipolar junction transistor designed for surface-mount applications. It features a maximum collector-emitter voltage of 250 V and a continuous collector current rating of 1 A. The device supports a maximum power dissipation of 5 W and operates within a junction temperature range of -65°C to 200°C. Key electrical characteristics include a minimum DC current gain of 40 at 20 mA and 10 V, with a collector cutoff current of 2 µA. The saturation voltage is specified at a maximum of 500 mV under specific base and collector current conditions.

Single Bipolar Transistors Feature Summary

• High voltage capability with a 250 V collector-emitter breakdown rating suitable for demanding switching applications.
• Extended thermal performance allowing operation up to a 200°C junction temperature.
• Surface-mount U4 package design optimized for automated assembly processes.

Single Bipolar Transistors Applications

• High-voltage switching circuits
• Power management systems requiring robust NPN transistors
• Industrial control equipment operating in extreme temperatures

Single Bipolar Transistors Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact pinout and mechanical dimensions. Confirm RoHS compliance status directly with the manufacturer as regulatory requirements may evolve. Ensure that the selected packaging type aligns with your manufacturing equipment capabilities. Cross-reference the datasheet revision date to guarantee access to the most current electrical specifications and handling instructions.

Single Bipolar Transistors Selection Notes

Select this component when high voltage isolation and wide thermal operating ranges are required in a compact surface-mount form factor. Evaluate the 250 V rating against peak circuit voltages to ensure adequate safety margins. Consider the 5 W power dissipation limit and implement appropriate thermal management strategies for the U4 package. Verify that the 1 A current capacity meets the load requirements without exceeding safe operating area limits.

Single Bipolar Transistors Part Context

This part belongs to the 2N3440 family of NPN transistors manufactured by Microchip Technology. The U4 suffix denotes a specific surface-mount package variant distinct from through-hole versions. This series is engineered for reliability in industrial and commercial environments where space constraints and thermal resilience are critical design factors.

Single Bipolar Transistors Replacement Considerations

Consult official Microchip substitution guides for verified equivalents. Generic replacements may not match the 200°C junction temperature rating or the specific U4 package footprint. Validate pin compatibility and electrical parameters before implementation.

Single Bipolar Transistors FAQ

What is the maximum junction temperature for the 2N3440U4?

The maximum junction temperature is 200°C, allowing operation in high-thermal environments.

Is the 2N3440U4 available in a through-hole package?

No, the U4 suffix indicates a surface-mount package; other suffixes may denote through-hole variants.

What is the typical DC current gain specification?

The minimum DC current gain is 40, measured at a collector current of 20 mA and a collector-emitter voltage of 10 V.