BC547B,112

Single Bipolar Transistors Overview

The BC547B,112 is an NPN general-purpose transistor manufactured by NXP Semiconductors. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 45 V. The device offers a minimum DC current gain (HFE) of 110 in the B grade. It operates with a maximum power dissipation of 500 mW and supports frequencies up to 300 MHz. The component is housed in a TO-92 plastic package with three pins.

Single Bipolar Transistors Feature Summary

• NPN silicon epitaxial planar construction for reliable switching and amplification
• Low current operation capability suitable for sensitive signal processing
• Standardized pinout configuration for easy integration into existing designs

Single Bipolar Transistors Applications

• General purpose switching circuits
• Small signal amplification stages
• Audio pre-amplifier applications

Single Bipolar Transistors Procurement Notes

Verify the manufacturer marking on the component body matches NXP or its predecessor Philips identifiers. Confirm the suffix '112' corresponds to the specific tape and reel packaging format required for automated assembly processes. Ensure the date code aligns with project lifecycle requirements to avoid obsolescence risks during production.

Single Bipolar Transistors Selection Notes

Select this component when a low-voltage NPN transistor with moderate gain is required for general-purpose tasks. The BC547B variant provides higher gain than standard grades, making it suitable for applications demanding better signal amplification without complex biasing networks. Consider thermal constraints due to the small TO-92 package size.

Single Bipolar Transistors Part Context

This part belongs to the widely used BC547 family of NPN transistors originally defined by Philips. The BC547B designation specifically indicates the binning category for current gain, ensuring consistent performance across batches. It serves as a fundamental discrete semiconductor component in analog and digital logic interface circuits.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC547C for higher gain requirements or BC547A for lower gain needs. PNP complements such as BC557 are available for complementary push-pull configurations. Cross-manufacturer equivalents from ON Semiconductor or Diotec may be functionally interchangeable if pinouts and electrical limits match.