2N5225 PBFREE

Overview

The Central Semiconductor Corp 2N5225 PBFREE is an NPN silicon small signal transistor housed in a TO-92-3 through-hole package. It features a collector-emitter voltage (Vceo) of 25 V and a collector-base voltage (Vcbo) of 25 V, with an emitter-base voltage (Vebo) of 4.0 V. The device supports a continuous collector current of 100 mA to 200 mA depending on the specific manufacturer variant, with a peak pulse current capability up to 500 mA. It exhibits a transition frequency (Ft) of 50 MHz and a typical DC current gain (hFE) ranging from 100 to 700. The component is RoHS3 compliant and available in lead-free or tin/lead configurations.

Feature Summary

• Designed for general-purpose amplifier and switching applications
• Utilizes silicon planar epitaxial construction for reliability
• Compatible with standard through-hole mounting processes

Applications

• General purpose signal amplification
• Low-frequency switching circuits
• Audio pre-amplifier stages

Procurement Notes

Verify the specific ordering suffix to confirm the terminal plating finish, as Central Semiconductor offers both PBFREE (lead-free) and TIN/LEAD variants. Ensure the selected part matches the required current rating specifications for the target application. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the datasheet version to ensure accurate electrical limits are observed during design.

Selection Notes

Select this component for low-voltage, low-current AC or DC signal processing tasks. The TO-92 package suits prototyping and low-volume production where board space is not critical. Consider the hFE spread when designing bias networks to ensure consistent performance across different units. Evaluate thermal dissipation requirements based on the expected duty cycle and ambient temperature conditions.

Part Context

This transistor belongs to the family of general-purpose NPN bipolar junction transistors. It serves as a fundamental active element in electronic circuits requiring moderate gain and speed. The 2N5225 designation aligns with historical military and industrial standards for small-signal devices. It provides a cost-effective solution for basic logic and analog functions in consumer electronics.

Replacement Considerations

Direct substitutes include the 2N4400 and 2N4401, which share similar NPN characteristics and pinouts. Other compatible alternatives may include the BC547 series, though parameter verification is necessary. Ensure replacement parts match the TO-92 package dimensions and electrical ratings for seamless integration.