Table 1 Absolute Maximum Ratings
(Ta = 25°C)
Item Symbol Rating Unit
——————————————————————–
Drain to source voltage VDS 12 V
——————————————————————–
Gate 1 to source voltage VG1S –6 V
——————————————————————–
Gate 2 to source voltage VG2S –6 V
——————————————————————–
Drain current ID50 mA
——————————————————————–
Channel power dissipation Pch 150 mW
——————————————————————–
Channel temperature Tch 125 °C
——————————————————————–
Storage temperature Tstg –55 to +125 °C
——————————————————————–
Table 2 Electrical Characteristics (Ta = 25°C)
Item Symbol Min Typ Max Unit Test condition
———————————————————————————————————————————————–
Drain to source cutoff current IDSX — — 50 µA VDS = 12 V,
VG1S = –4 V, VG2S = 0
———————————————————————————————————————————————–
Gate 1 to source breakdown voltage V(BR)G1SS –6——V I
G1 = –10 µA,
VG2S = VDS = 0
———————————————————————————————————————————————–
Gate 2 to source breakdown voltage V(BR)G2SS –6——V I
G2 = –10 µA,
VG1S = VDS = 0
———————————————————————————————————————————————–
Gate 1 cutoff current IG1SS — — –5 µA VG1S = –5 V,
VG2S = VDS = 0
———————————————————————————————————————————————–
Gate 2 cutoff current IG2SS — — –5 µA VG2S = –5 V,
VG1S = VDS = 0
———————————————————————————————————————————————–
Drain current IDSS 15 25 40 mA VDS = 5 V,
VG1S = VG2S = 0
———————————————————————————————————————————————–
Gate 1 to source cutoff voltage VG1S(off) — –1.3 –3.5 V VDS = 5 V, VG2S = 0,
ID= 100 µA
———————————————————————————————————————————————–
Gate 2 to source cutoff voltage VG2S(off) — –1.3 –3.5 V VDS = 5 V, VG1S = 0,
ID= 100 µA
———————————————————————————————————————————————–
MPAK-4
1. Source
2. Gate 1
3. Gate 2
4. Drain
1
4
3
2
3SK229
GaAs Dual Gate MES FET
UHF TV Tuner RF Amplifier
Table 2 Electrical Characteristics (Ta = 25°C) (cont)
Item Symbol Min Typ Max Unit Test condition
———————————————————————————————————————————————–
Forward transfer admittance |yfs| 20 34 — mS VDS = 5 V, VG2S = 1 V,
ID= 10 mA, f = 1 kHz
———————————————————————————————————————————————–
Input capacitance Ciss — 0.56 1.0 pF VDS = 5 V,
———————————————————————————————————– VG1S = VG2S = –4 V,
Output capacitance Coss — 0.36 0.6 pF f = 1 MHz
———————————————————————————————————–
Reverse transfer capacitance Crss — 0.027 0.05 pF
———————————————————————————————————————————————–
Power gain PG 17 20 — dB VDS = 5 V, VG2S = 1 V,
———————————————————————————————————– ID= 10 mA, f = 900 MHz
Noise figure NF — 1.3 2.0 dB
———————————————————————————————————————————————–
• Marking is “XS-”.
• See characteristic curve of 3SK228.
2
3SK229 3SK229
