BC547ATA

Single Bipolar Transistors Overview

The BC547ATA is a single NPN epitaxial silicon small-signal transistor manufactured by Fairchild Semiconductor. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 45 V. The device operates in a TO-92-3 package with kinked leads for through-hole mounting. Key electrical parameters include a transition frequency of 300 MHz, power dissipation of 500 mW, and a minimum DC current gain (hFE) of 110 at 2 mA and 5 V. The component supports a maximum operating temperature of +150°C.

Single Bipolar Transistors Feature Summary

• NPN polarity configuration suitable for general-purpose switching and amplification tasks
• High-voltage capability with 45 V collector-emitter breakdown rating
• Low noise performance characteristics optimized for signal processing applications

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Electronic switching applications
• Audio pre-amplifier stages

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer source as this component appears across multiple vendors including ON Semiconductor and Rochester Electronics due to industry acquisitions. Confirm RoHS compliance status and lead-free designation against the specific datasheet revision. Check for obsolete status or end-of-life notices from original suppliers before finalizing procurement plans.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN small-signal transistor with moderate voltage ratings is required. Ensure the application does not exceed the 100 mA continuous collector current limit. Verify that the TO-92-3 package dimensions fit the PCB layout constraints. Consider alternative hFE grades if higher gain consistency is necessary for precision analog designs.

Single Bipolar Transistors Part Context

This part belongs to the BC547 series of NPN transistors, widely used in consumer electronics and industrial control systems. The 'A' suffix typically denotes a specific binning category for current gain. The component is often compared with BC548 and BC549 variants which offer different voltage or noise specifications within the same family.

Single Bipolar Transistors Replacement Considerations

• BC547CTAR
• BC547TFR

Single Bipolar Transistors FAQ

What is the pinout configuration for the BC547ATA?

The standard pinout for the flat side facing the user is Collector (Pin 1), Base (Pin 2), and Emitter (Pin 3).

Is the BC547ATA available in a surface-mount package?

No, the BC547ATA is specifically designed for through-hole mounting in a TO-92-3 package with kinked leads.

What is the maximum power dissipation of this transistor?

The maximum power dissipation is 500 mW at an ambient temperature of 25°C.