2SC4094-T1-A

Overview

The 2SC4094-T1-A is an NPN silicon RF bipolar transistor manufactured by Renesas Electronics. It belongs to the NE681 series, designed for ultra-high frequency applications requiring low noise and high gain. Key electrical characteristics include a maximum collector current of 0.065 A and a collector-emitter breakdown voltage of 10 V. The device features a low noise figure of 1.2 dB at 1 GHz and 1.6 dB at 2 GHz, with associated gains of 15 dB and 12 dB respectively at those frequencies. It utilizes a surface-mount small outline package with four gull-wing terminals.

Feature Summary

• Ultra-high frequency band operation suitable for RF amplification
• Low noise figure performance optimized for sensitive signal reception
• High associated gain providing efficient signal boosting
• Surface-mount packaging enabling compact circuit board integration

Applications

• Low noise amplifier stages in communication systems
• RF front-end modules requiring high sensitivity
• VHF and UHF band signal processing circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Request original datasheets and product change notices to confirm current manufacturing specifications. Ensure compliance with relevant regulatory standards before integration into final designs.

Selection Notes

Consider the 10 V collector-emitter voltage limit when designing power supply rails. Evaluate thermal management requirements given the small outline package constraints. Compare noise figures against alternative devices if operating frequencies exceed 2 GHz significantly.

Part Context

This component is part of NEC's (now Renesas) NE681 series of NPN silicon high-frequency transistors. The series is characterized by high gain bandwidth products and low noise figures, making it suitable for demanding RF applications. The 2SC4094 variant specifically targets ultra-high frequency bands with optimized noise performance.

Replacement Considerations

Check for official substitute part numbers from Renesas Electronics documentation. Verify pinout compatibility and electrical parameter equivalence before substitution. Consider legacy support availability given the end-of-life designation.