This post explains for the semiconductor 3SK74.
The Part Number is 3SK74.
The function of this semiconductor is MOSFET.
Manufacturers : NEC Electronics
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Description : N-Channel Silicon dual-gate MOSFET
Features
1. Suitable for use as RF amplifier & Mixer in VHF TV Tuner
2. Low Crss : 0.03pF Typ.
3. High PG : 22dB Typ.
4. Low NF : 2.0dB Typ.
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Absoulte Maximum ratings
1. Drain to Source Voltage : Vdsx = 20 V
2. Gate1 to Source Voltage : Vg1s = ± 10 V
3. Gate2 to Source Voltage : Vg2s = ± 10 V
4. Drain Current : Id = 25 mA
5. Total Power Dissipation : Pt – 200 mW
3SK74 Datasheet
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