BC557B_J35Z

Single Bipolar Transistors Overview

The BC557B_J35Z is a discontinued PNP general-purpose small-signal bipolar junction transistor manufactured by onsemi. It utilizes a TO-92-3 through-hole package and operates with a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 45 V. The device features a DC current gain (hFE) minimum of 200 at 2 mA and 5 V, with a transition frequency of 150 MHz and a maximum power dissipation of 500 mW. It supports a junction temperature up to 150°C.

Single Bipolar Transistors Feature Summary

• PNP silicon planar epitaxial transistor designed for low-current applications
• General-purpose switching and amplification capabilities
• Lead-free construction compliant with environmental standards

Single Bipolar Transistors Applications

• General purpose switching circuits
• Small signal amplification stages
• Low voltage logic interface applications

Single Bipolar Transistors Procurement Notes

This component is officially marked as obsolete and no longer in production by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or approved substitute part numbers. Ensure that any replacement components maintain identical pinout configurations and electrical specifications to guarantee circuit compatibility without redesign.

Single Bipolar Transistors Selection Notes

Select this component for legacy designs requiring a standard PNP small-signal transistor in a TO-92 package. Verify that the required hFE bin matches the B grade specification if high gain is critical. Confirm thermal management requirements align with the 500 mW dissipation limit in the intended enclosure environment before finalizing the design.

Single Bipolar Transistors Part Context

The BC557 series represents a family of low-voltage, low-current PNP transistors widely used in consumer electronics and industrial control. The J35Z suffix typically denotes specific packaging or tape-and-reel configuration details defined by the manufacturer. This part serves as the complementary counterpart to NPN devices such as the BC547 series within general-purpose amplifier topologies.

Single Bipolar Transistors Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include BC557BTA and BC557BTF from onsemi. These alternatives offer identical electrical characteristics and pinouts, facilitating direct drop-in replacements for existing PCB layouts without modification.