BC557BTF

Single Bipolar Transistors Overview

The BC557BTF is a PNP silicon epitaxial planar transistor manufactured by onsemi, designed for general-purpose small-signal applications. It operates within a collector-emitter voltage of 45 V and supports a maximum continuous collector current of 100 mA. The device features a DC current gain (hFE) range of 200 to 450 at a collector current of 2 mA. It exhibits a transition frequency of 150 MHz and a maximum power dissipation of 500 mW. The component is housed in a TO-92-3 surface-mount package.

Single Bipolar Transistors Feature Summary

• Utilizes epitaxial planar silicon technology for reliable small-signal performance
• Provides high DC current gain suitable for amplification tasks
• Engineered with a low-profile surface-mount footprint for automated assembly

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Switching applications in consumer electronics
• Audio pre-amplifier stages

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'BTF' corresponds to the required tape-and-reel packaging configuration rather than bulk or ammo pack variants. Confirm that the hFE binning class matches the design requirements, as gain ranges vary between subtypes. Ensure the ordering quantity aligns with the manufacturer's standard reel size specifications to avoid partial reel handling issues.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with moderate gain and a surface-mount form factor is required. Compare the 45 V breakdown voltage against circuit supply rails to ensure adequate headroom. Evaluate the thermal management needs relative to the 500 mW dissipation limit in the intended enclosure environment.

Single Bipolar Transistors Part Context

This part belongs to the BC557 family of PNP transistors, which are widely used in analog and digital switching circuits. The BC557 series typically includes variants distinguished by gain bins and packaging types. The BTF suffix specifically denotes the surface-mount version of the standard through-hole BC557BTA.

Single Bipolar Transistors Replacement Considerations

• BC557BTA
• BC557BTFR

Single Bipolar Transistors FAQ

What is the maximum collector-emitter voltage for the BC557BTF?

The maximum collector-emitter voltage (Vceo) is 45 V.

Does the BC557BTF use a through-hole or surface-mount package?

It uses a surface-mount TO-92-3 package.

What is the typical DC current gain range for this device?

The DC current gain (hFE) ranges from 200 to 450 at a collector current of 2 mA.