BC550CTA

Single Bipolar Transistors Overview

The BC550CTA is an NPN epitaxial silicon transistor manufactured by onsemi, housed in a TO-92-3 through-hole package. It features a maximum collector-emitter voltage of 45V and a continuous collector current of 100mA. The device offers a transition frequency of 300MHz and a maximum power dissipation of 500mW. DC current gain (hFE) is categorized with a minimum value of 420 at 2mA collector current and 5V collector-emitter voltage. The component supports a junction temperature up to 150°C and includes a collector-base breakdown voltage of 50V.

Single Bipolar Transistors Feature Summary

• Designed for low-noise amplifier applications within the BC546-BC550 series family
• Provides high-voltage switching capabilities suitable for general-purpose circuits
• Offers complementary pairing options with PNP transistors such as the BC560

Single Bipolar Transistors Applications

• Low-noise audio pre-amplification stages
• General-purpose signal switching circuits
• Linear amplifier designs requiring stable NPN characteristics

Single Bipolar Transistors Procurement Notes

Verify the specific suffix CTA indicates tape-and-reel packaging rather than bulk supply when sourcing. Confirm RoHS compliance status against the latest manufacturer documentation, as older batches may differ. Ensure the supplier provides official datasheets referencing the BC550CTA part number to guarantee correct hFE binning and electrical specifications match design requirements.

Single Bipolar Transistors Selection Notes

Select this component when low noise performance is critical compared to standard general-purpose transistors. The 45V rating suits moderate voltage applications where higher breakdown devices are unnecessary. Consider the TO-92 package constraints for thermal management if operating near maximum power dissipation limits. Verify that the 420 minimum hFE meets the circuit's biasing requirements for consistent gain.

Single Bipolar Transistors Part Context

The BC550CTA belongs to the widely used BC546-BC550 series of NPN silicon transistors. This series is engineered for low-noise and high-voltage applications, distinguishing it from standard switching transistors. The 'CTA' suffix typically denotes a specific packaging format, often tape and reel, intended for automated assembly processes in manufacturing environments.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers include BC550CBU and BC550CRL. These alternatives share identical electrical characteristics and pin configurations. Verify package compatibility and hFE grading before substitution.