BC557BZL1G

Single Bipolar Transistors Overview

The BC557BZL1G is a PNP silicon epitaxial planar transistor manufactured by onsemi. It features a maximum collector-emitter voltage of -45 V and a continuous collector current of -100 mA. The device operates within a junction temperature range of -55°C to +150°C with a total device dissipation of 625 mW at 25°C ambient. Electrical characteristics include a DC current gain (hFE) ranging from 120 to 800 at IC = -10 mA, and a transition frequency (fT) typically between 280 MHz and 320 MHz. The component utilizes a TO-92 package.

Single Bipolar Transistors Feature Summary

• PNP general-purpose amplifier transistor designed for low-current applications
• Utilizes silicon planar epitaxial technology for reliable switching performance
• Available in lead-free compliant packaging

Single Bipolar Transistors Applications

• General purpose amplification circuits
• Low-speed switching applications
• Audio signal processing stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix ZL1G corresponds to the required Ammo Box shipping configuration containing 2000 units per box. Confirm that the Pb-Free designation aligns with environmental compliance requirements for the target assembly process. Ensure the pinout matches Style 17 (Collector, Base, Emitter) as specified in the mechanical outline documentation.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with a -45 V collector-emitter rating and up to -100 mA continuous current capability is required. The B series gain binning provides a wide hFE range suitable for various biasing conditions. Consider the thermal resistance values and safe operating area curves for high-power pulse applications or elevated ambient temperatures.

Single Bipolar Transistors Part Context

This part belongs to the BC556/BC557/BC558 family of PNP silicon transistors produced by onsemi. The BC557 variant specifically offers a -45 V breakdown voltage, distinguishing it from the higher-voltage BC556 (-65 V) and lower-voltage BC558 (-30 V). All variants share similar physical packages and thermal characteristics while differing in voltage ratings and gain specifications.

Single Bipolar Transistors Replacement Considerations

• BC557BG
• BC557BRL1G

Single Bipolar Transistors FAQ

What is the pin configuration for the BC557BZL1G?

The standard pinout for the TO-92 package (Style 17) is Pin 1: Collector, Pin 2: Base, and Pin 3: Emitter.

Does the BC557BZL1G meet lead-free standards?

Yes, the 'ZL1G' suffix indicates that the device is packaged in a lead-free compliant container.

What is the typical current-gain bandwidth product?

The typical current-gain bandwidth product (fT) is specified between 280 MHz and 320 MHz at IC = -10 mA and VCE = -5.0 V.