MMBT945-H-TP

Single Bipolar Transistors Overview

The MMBT945-H-TP is an NPN silicon plastic-encapsulated transistor manufactured by Micro Commercial Components (MCC). It operates within a collector-emitter voltage range of 50 V and supports a continuous collector current of 150 mA. The device features a transition frequency of 150 MHz and a power dissipation capacity of 200 mW. Electrical characteristics include a DC current gain ranging from 130 to 400, a collector-base cutoff current of 0.1 µA, and a collector-emitter saturation voltage of 0.3 V at specified test conditions. The component utilizes a SOT-23 package and functions across an operating junction temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Halogen-free 'Green' device construction compliant with environmental standards
• Lead-free finish and RoHS compliance for soldering compatibility
• Moisture sensitivity level 1 classification for storage stability
• Epoxy material meets UL 94 V-0 flammability rating

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Switching applications in low-power electronic systems
• Audio pre-amplifier stages requiring moderate gain

Single Bipolar Transistors Procurement Notes

Verify the specific suffix designation against official MCC documentation to confirm exact compliance attributes, as ordering codes may dictate variations in packaging or regulatory status. Ensure procurement channels are authorized distributors to guarantee part authenticity and traceability. Cross-reference the datasheet revision date with manufacturing batches to confirm alignment with current technical specifications and handling requirements.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring an NPN transistor with a 50 V collector-emitter breakdown voltage and a maximum continuous current of 150 mA. The SOT-23 surface-mount package facilitates compact circuit board layouts. Consider the thermal resistance of 625°C/W when designing heat dissipation strategies for ambient temperatures exceeding standard operating ranges. Verify that the required DC current gain falls within the 130 to 400 range provided by the manufacturer.

Single Bipolar Transistors Part Context

The MMBT945 belongs to the family of NPN silicon plastic-encapsulated transistors produced by Micro Commercial Components. This series is designed for general-purpose switching and amplification tasks. The device is marked with the code CR on the top surface. It is typically supplied in tape and reel formats for automated assembly processes, supporting high-volume manufacturing environments.

Single Bipolar Transistors Replacement Considerations

Consult official MCC substitution guides for verified equivalent part numbers. Do not assume functional interchangeability with generic NPN transistors without verifying pinout compatibility and electrical parameter limits.

Single Bipolar Transistors FAQ

What is the marking code on the MMBT945-H-TP component?

The component is marked with the code CR on its top surface.

What is the maximum operating junction temperature for this transistor?

The maximum operating junction temperature is +150°C.

Does the MMBT945-H-TP meet halogen-free requirements?

Yes, the device is described as a Halogen-Free 'Green' Device containing less than 900ppm bromine and chlorine combined.