BC557CG

Single Bipolar Transistors Overview

The BC557CG is a PNP silicon small signal amplifier transistor manufactured by onsemi. It features a collector-emitter breakdown voltage of -45 V and a continuous collector current rating of -100 mA. The device utilizes a TO-92 (CASE 29-11) lead-free plastic package with three pins. Electrical characteristics include a minimum DC current gain (hFE) of 180 at -10 mA, with a maximum of 300. The transition frequency (fT) reaches up to 320 MHz at -10 mA. Thermal resistance from junction to ambient is 200 °C/W, supporting an operating temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• PNP silicon epitaxial planar construction for reliable amplification
• Lead-free packaging compliant with environmental standards
• High DC current gain suitable for low-noise applications

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Switching applications
• Audio preamplifier stages

Single Bipolar Transistors Procurement Notes

Verify the ordering suffix 'G' confirms the Pb-Free status as specified in the official documentation. Confirm the package style matches CASE 29-11 requirements. Ensure the component meets RoHS compliance standards required for your assembly process. Cross-reference the manufacturer part number with authorized distribution channels to guarantee authenticity.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with a -45 V collector-emitter voltage rating is required. The high hFE range makes it appropriate for low-current amplification tasks. Consider the TO-92 through-hole package constraints for PCB layout. Evaluate thermal dissipation limits against the expected ambient operating conditions.

Single Bipolar Transistors Part Context

This device belongs to the BC556/BC557/BC558 family of PNP silicon transistors produced by onsemi. The 'C' series designation indicates specific DC current gain binning compared to 'A' or 'B' variants. The 'G' suffix denotes lead-free manufacturing. These transistors are designed for general-purpose amplification and switching duties within standard electronic equipment.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC557C from other manufacturers such as Diotec Semiconductor or NXP. Verify that replacement parts maintain the same -45 V VCEO rating and TO-92 pinout configuration. Check if alternative sources offer identical hFE binning specifications.