STMicroelectronics SD2931-10 RF Power MOSFET Pair New Mouser Stock Bench Tested
$240.00
Genuine STMicroelectronics SD2931-10 N-channel RF power MOSFET pair sourced new from Mouser Electronics and sold as one pair of two devices. Both transistors carry matching visible markings: SD2931-10 / C2678 VY / MAR CZ 926.
The SD2931 family became a respected RF power transistor platform for high-power communications, amplifier, broadcast, industrial RF, amateur radio, and RF service applications. These rugged metal-flange RF MOSFETs were designed for demanding final-stage service where thermal performance, stability, and dependable RF power handling are important.
Original distributor-sourced devices are increasingly valuable to technicians servicing equipment originally engineered around the SD2931 family. Unlike unknown-market RF transistors, these devices were purchased new through Mouser Electronics and have remained identifiable as genuine distributor-sourced inventory.
This listing is for TWO SD2931-10 RF power MOSFETs sold together as one bench-tested pair. Each transistor was individually electrically screened before being offered for sale. The bench evaluation verifies normal N-channel enhancement-mode MOSFET behavior and provides measured reference data useful to an experienced RF technician.
Both devices have matching external production markings and are being kept together as a premium RF repair pair. They are suitable for restoration, RF amplifier final-stage service, transmitter repair, engineering projects, and technician bench stock where the SD2931-10 is specified.
RF Boneyard recommends that installation of high-power RF MOSFETs be performed by an experienced technician. Always verify circuit compatibility, bias requirements, pin configuration, mounting, thermal compound, heatsinking, and surrounding components before installation. Bench testing confirms device electrical behavior under the stated test conditions and is not a guarantee of performance in an unknown or damaged RF amplifier.
Origin Tracker
NOS / New Old Stock
Unused new old stock from legacy inventory. Packaging, age, and cosmetic condition may vary.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Intended for RF amplifier, transmitter, final-stage, industrial RF, amateur radio, communications, and restoration applications originally designed for the STMicroelectronics SD2931-10 or electrically appropriate SD2931-family RF MOSFET. Verify the equipment service manual, circuit requirements, bias settings, pin configuration, mounting arrangement, and heatsinking requirements before installation. Do not assume drop-in compatibility solely from similar transistor numbers.
RF Boneyard Bench Notes
Both SD2931-10 devices were individually bench tested by RF Boneyard prior to being offered as a pair.
Transistor 1:
Device Type: N-Channel Enhancement Mode MOSFET
Test Lead Reference: Red = Gate / Green = Source / Blue = Drain
Vgs(on): 2.340 V at Id = 5.06 mA and Ig = 2 µA
Vgs(off): 1.499 V at Id = 4.9 µA
Transconductance gm: 30.6 mA/V at Id = 3.0 mA to 5.1 mA
Rds(on): Less than 1.0 ohm at Id = 5.1 mA and Vgs = 8.0 V
Body Diode Vf: 0.59 V
Transistor 2:
Individually bench tested as the companion device in this two-transistor set. Device confirmed as an N-channel enhancement-mode MOSFET and retained with Transistor 1 as the original Mouser-sourced pair.
Bench testing was performed as an electrical screening and characterization test. Final RF output performance depends on the amplifier circuit, bias adjustment, power supply, load, matching network, heatsinking, installation quality, and condition of surrounding components.
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