2SC3400-AC

Overview

The onsemi 2SC3400-AC is a single pre-biased NPN bipolar junction transistor designed for switching applications. It integrates bias resistors within a small package to simplify circuit design. Key electrical parameters include a collector current of 100 mA, a collector-emitter breakdown voltage of 50 V, and a transition frequency of 250 MHz. The device dissipates 300 mW of power and features built-in bias resistors with values of 22 kΩ each.

Feature Summary

• Integrates dual bias resistors to reduce component count
• Optimized for high-speed switching operations
• Utilizes compact surface-mount packaging

Applications

• High-fidelity audio systems
• Single cassette deck circuits
• General-purpose switching logic

Procurement Notes

Verify the manufacturer origin carefully, as this component has been produced by multiple entities including Sanyo Semiconductor and onsemi. Ensure the specific ordering suffix matches the required pin configuration and thermal characteristics. Confirm that the received units align with the intended application's voltage and current requirements before integration into final assemblies.

Selection Notes

Select this component when space constraints require integrated biasing solutions. It is suitable for low-power switching tasks where a 50 V rating and 100 mA current capacity are sufficient. Consider the 250 MHz frequency limit for signal processing needs. Evaluate the thermal performance relative to the 300 mW dissipation limit in the chosen enclosure.

Part Context

This part belongs to the family of pre-biased bipolar transistors, which combine a BJT with internal resistors. These devices streamline designs by eliminating external base and emitter resistors. The 2SC3400 variant specifically targets consumer electronics requiring reliable, compact switching elements with minimal board space consumption.

Replacement Considerations

Direct substitutes may include other NPN pre-biased transistors with similar 50 V ratings and integrated 22 kΩ resistors. Verify compatibility regarding package dimensions and thermal resistance. Cross-reference datasheets for exact electrical parameter matching to ensure functional equivalence in existing circuits.