FJNS4202RTA

Overview

The FJNS4202RTA is a PNP epitaxial silicon transistor with built-in bias resistors, manufactured by Fairchild Semiconductor. It features a maximum collector-emitter breakdown voltage of 50 V and a continuous collector current rating of 100 mA. The device includes integrated base resistor R1 and emitter resistor R2. It operates in a TO-92S through-hole package with a maximum power dissipation of 300 mW. The transition frequency is specified at 200 MHz, supporting high-speed switching applications.

Feature Summary

• Integrates bias resistors to reduce component count and simplify circuit design
• Provides high-speed switching capability with a 200 MHz transition frequency
• Offers space-saving solution for interface and driver circuits

Applications

• Switching, Interface, and Driver Circuits
• Inverters
• Digital Applications in Industrial Segments

Procurement Notes

Verify the specific ordering suffix (RTA) against the manufacturer's official documentation to confirm the exact tape-and-reel packaging configuration and quantity per reel. Ensure compatibility with existing assembly processes. Confirm RoHS compliance status as required by project specifications. Check for any obsolescence notices or lifecycle changes directly from the supplier before finalizing procurement plans.

Selection Notes

Select this component when a pre-biased PNP transistor is required for digital logic interfaces or switching applications. The integrated resistors eliminate the need for external biasing components, reducing board space and assembly costs. Ensure the 50 V voltage rating and 100 mA current limit meet the load requirements. Verify that the TO-92S package fits the mechanical constraints of the design.

Part Context

This part belongs to the FJN series of pre-biased bipolar transistors from Fairchild Semiconductor. These devices are designed to replace discrete transistor and resistor networks. The RTA suffix typically indicates a specific tape-and-reel packaging format intended for automated surface-mount or through-hole insertion equipment, distinguishing it from bulk or other reel configurations.

Replacement Considerations

Check for direct equivalents such as the FJNS4202RBU if different packaging is needed. Verify pinout compatibility and electrical parameters like hFE and breakdown voltage. Ensure the replacement maintains the same PNP configuration and integrated resistor values to avoid circuit redesign.