BC547ATA

Single Bipolar Transistors Overview

The BC547ATA is an NPN epitaxial silicon transistor from the BC547 series, manufactured by onsemi. It features a collector-emitter voltage (VCEO) of 45 V and a maximum DC collector current (IC) of 100 mA. The device provides a minimum DC current gain (hFE) of 110 at IC = 2 mA and VCE = 5 V. Key electrical parameters include a collector-base voltage (VCBO) of 50 V, an emitter-base voltage (VEBO) of 6 V, and a power dissipation (PC) of 500 mW. The transition frequency (fT) is 300 MHz, with a maximum junction temperature of 150 °C.

Single Bipolar Transistors Feature Summary

• NPN epitaxial silicon construction for switching and amplifier applications
• High-voltage capability with 45 V collector-emitter breakdown
• Low noise figure suitable for signal processing
• Complements the BC557 PNP transistor

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Small-signal amplification stages
• Audio pre-amplifier designs
• Logic interface buffers

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as this part was originally a Fairchild Semiconductor product now integrated into the onsemi portfolio. Confirm the specific 'A' binning classification for hFE requirements. Ensure the TO-92-3 Ammo packaging matches the assembly line specifications. Check for any recent Product Change Notices (PCN) regarding lead frame or marking updates due to corporate integration.

Single Bipolar Transistors Selection Notes

Select the BC547ATA when a standard NPN small-signal transistor with moderate gain is required. The 'A' suffix indicates a specific hFE range (110 to 220), which differs from 'B' or 'C' bins. Consider the 500 mW power dissipation limit and TO-92 thermal characteristics for heat management. Verify compatibility with the complementary BC557A if a push-pull configuration is needed.

Single Bipolar Transistors Part Context

This component belongs to the BC546/BC547/BC548/BC549/BC550 family of NPN epitaxial silicon transistors. Originally designed by Fairchild Semiconductor, these parts are now managed under the onsemi brand following corporate integration. The BC547 variant specifically offers a 45 V rating, distinguishing it from the higher-voltage BC546 and lower-voltage BC548.

Single Bipolar Transistors Replacement Considerations

MMBT100

Single Bipolar Transistors FAQ

What does the 'A' suffix in BC547ATA indicate?

The 'A' suffix denotes the DC current gain (hFE) binning classification. For the BC547A, the minimum hFE is 110 at IC = 2 mA and VCE = 5 V.

Is the BC547ATA compatible with the BC557A?

Yes, the BC547A is the NPN complement to the BC557A PNP transistor within the same series, offering matched electrical characteristics for complementary circuits.

What is the maximum collector-emitter voltage for this device?

The maximum collector-emitter voltage (VCEO) for the BC547 series is 45 V.