STAC2932B/STAC2942B/STAC3932B RF Transistors

RF DMOS in Low Cost Packaging Available at Digi-Key

Image of STMicroelectronics' STAC2932B / STAC2942B / STAC3932BThe transistors offer improved performance over industry standard ceramic parts and at a lower cost. RF gain is higher by 3 dB to 5 dB and thermal resistance is lower by a minimum of 20%. Operating voltage is 50 V for the SD29x2B devices and 100 V for the STAC3932B. The STAC(B) parts have aligned mounting holes and leads compared to the standard ceramic parts and will fit in the same circuits as the ceramics. Seating height is lower, but leads will be flush against the circuit in standard 60 mil boards.

The STAC(B) transistors have a wrap over cap that allows bolt down mounting. The devices are also 75% lower in weight compared to ceramics which may be important in mobile and avionic applications.


  • Excellent thermal stability
  • 50 V (STAC2932/42B) and 100 V (STAC3932B) operating
  • Innovative STAC244B air cavity package
  • Common source push-pull configuration
  • POUT:
    • 300 W minimum (STAC2932B)
    • 350 W minimum (STAC2942B)
    • 580 W typical (STAC3932B)


ImageManufacturer Part NumberDescriptionPart StatusTransistor TypeAvailable Quantity
STAC3932B datasheet linkTRANS RF PWR N-CH 580W STAC244BSTAC3932BTRANS RF PWR N-CH 580W STAC244BActiveN-Channel2 - Immediate
STAC3932B product page link
STAC2932B datasheet linkTRANS RF PWR N-CH 300W STAC244BSTAC2932BTRANS RF PWR N-CH 300W STAC244BObsoleteN-Channel0STAC2932B product page link
STAC2942B datasheet linkTRANS RF PWR N-CH 350W STAC244BSTAC2942BTRANS RF PWR N-CH 350W STAC244BObsoleteN-Channel0STAC2942B product page link
Published: 2013-03-12