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.
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.
RF Boneyard Bench Notes
RF BONEYARD BENCH TEST
SD2918 / CZ208 VY / MAR CZ 434
Results:
Device type detected: N-channel MOSFET behavior
VGS ON: 1.423 V
ID / IP ON: 5.08 mA
Gate leakage / IG: 0 µA
VGS OFF: 0.707 V
ID / IP OFF: 4.9 µA
Transconductance / gm: 34.3 mA/V
gm test range: IP 3.1 mA to 5.1 mA
RDS(on): 1.0 ?
RDS(on) test current: IP 5.1 mA
RDS(on) gate drive: VGS 8.0 V
Body diode: 0.60 Vf
Basic shorts check: No abnormal short behavior observed during analyzer test
Bench Result:
This SD2918 showed normal N-channel MOSFET behavior on the bench analyzer, with 0 µA gate leakage, low off-current, normal body diode response, and stable small-signal test readings.
Important Note:
This is a bench-analyzer health test only. RF output power, gain, bias stability under load, and installation performance have not been RF-verified unless specifically stated. Buyer must confirm compatibility, bias setup, and installation requirements for their equipment
Ask the bench before you buy.
Post a question about this part
Login or create an account to ask a product question. This helps keep spam out of the RF Boneyard bench.
Login to AskAnswered Questions
No answered questions yet. Be the first to ask the bench.