STAC2943

Overview

The STAC2943 is a gold metallized N-channel MOS field-effect RF power transistor designed for 50 V DC large signal applications up to 175 MHz. It delivers a minimum output power of 350 W with 21 dB gain at the specified frequency. The device utilizes ST air-cavity packaging technology and complies with the 2002/95/EC European directive.

Feature Summary

• Gold metallization provides excellent thermal stability
• Designed for common source push-pull configuration
• Utilizes ST air-cavity packaging technology

Applications

• RF amplification in HF/VHF/UHF bands
• Large signal applications requiring high power output
• Broadband communication systems

Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure correct package variant and compliance status. Confirm that the requested part matches the active product lifecycle status defined by STMicroelectronics. Check for any recent process change notifications that may affect pinout or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high power density and thermal robustness in the HF/VHF/UHF spectrum. Ensure the circuit topology supports common source push-pull operation to leverage the device's full 350 W potential. Verify that the system can handle the 50 V drain-source voltage rating and provide adequate heat sinking for the air-cavity package.

Part Context

This transistor belongs to the STAC series of RF power devices, which are engineered for high performance and durability. The series features advanced LDMS technology targeted for operation across various frequency bands. The STAC2943 specifically addresses applications needing significant output power within a compact, thermally efficient package structure.

Replacement Considerations

The STAC2942B is a documented substitute within the same family, offering similar gold-metallized construction and air-cavity packaging. Verify that the 250 MHz upper frequency limit of the STAC2942B aligns with the specific application requirements before substitution.