ST SD2918 Data-sheet
Download the attached PDF/image reference for pinout, specs, service notes, or bench reference.
Open Datasheet / PDFSD2918 RF MOSFET Final DRIVER
$75.00
This listing is for one ST SD2918 RF MOSFET driver transistor, marked SD2918 / CZ208 VY / MAR CZ 434.
The SD2918 is a hard-to-find RF MOSFET commonly sought after for HF radio repair, RF driver stages, amplifier work, and technician bench stock. This part is being sold as imported old stock and has been checked on a bench semiconductor analyzer for basic MOSFET health.
The device was detected as showing normal N-channel MOSFET behavior. Bench readings showed 0 µA gate leakage, low off-current, normal body diode response, and stable small-signal test results.
This part has not been RF load tested. RF output power, gain, bias stability under load, and installed equipment performance are not guaranteed unless specifically stated. Buyer must verify compatibility, mounting, bias setup, and installation requirements before use.
Because RF MOSFETs can be damaged by static, improper biasing, bad soldering, poor grounding, mismatch, high SWR, or incorrect installation, this item is sold for qualified technicians, radio repair use, and experienced electronics buyers.
Compatible Radios / Boards
SD2918 Power Mosfet Driver - Compatible with Yeasu radio FTDX9000, FTDX5000
RF Boneyard Bench Notes
RF Boneyard Bench Test Vgs(on): 2.629 V
Ip: 5.06 mA
Ig: 2 µA
Vgs(off): 1.824 V
Leakage / low-current reading: 5.1 µA
gm: 23 mA/V
Additional Id/Ip reading: 3.0 mA to 5.1 mA test range
Rds(on): 1.3 ? at Ip = 5.1 mA
GS test voltage: 8.0 V
Body diode Vf: 0.65 V
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