VISHAY S852T, S852TW Datasheet
Silicon NPN Planar RF Transistor
Electrostatic sensitive device.
Observe precautions for handling.
Applications
For low noise and high gain broadband amplifiers at
collector currents from 0.2 mA to 5 mA.
Features
D
Low supply voltage
D
Low current consumption
D
50 W input impedance at 945 MHz
D
Low noise figure
D
High power gain
S852T/S852TW
Vishay Telefunken
1
94 9280
23
S852T Marking: 852
13 581
1
13 652
2
S852TW Marking: W52
3
Plastic case (SOT 323)
1 = Collector, 2 = Base, 3 = Emitter
1 = Collector, 2 = Base, 3 = Emitter
Absolute Maximum Ratings
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Value Unit
Collector-base voltage V
Collector-emitter voltage V
Emitter-base voltage V
Collector current I
Total power dissipation T
Junction temperature T
Storage temperature range T
≤ 125 °C P
amb
CBO
CEO
EBO
C
tot
j
stg
13 570
12 V
6 V
2 V
8 mA
30 mW
150
–65 to +150
°
C
°
C
Maximum Thermal Resistance
T
= 25_C, unless otherwise specified
amb
Parameter T est Conditions Symbol Value Unit
Junction ambient on glass fibre printed board (25 x 20 x 1.5) mm
plated with 35mm Cu
Document Number 85052
Rev. 3, 20-Jan-99
3
R
thJA
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450 K/W
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S852T/S852TW
qy
g
Vishay Telefunken
Electrical DC Characteristics
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Min Typ Max Unit
Collector cut-off current VCE = 12 V, VBE = 0 I
Collector-base cut-off current VCB = 8 V, IE = 0 I
Emitter-base cut-off current VEB = 1 V, IC = 0 I
Collector-emitter breakdown voltage IC = 1 mA, IB = 0 V
Collector-emitter saturation voltage IC = 5 mA, IB = 0.5 mA V
DC forward current transfer ratio VCE = 3 V, IC = 1 mA h
Electrical AC Characteristics
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Min Typ Max Unit
Transition frequency VCE = 3 V, IC = 1 mA, f = 500 MHz f
VCE = 2 V, IC = 1.5 mA, f = 500 MHz f
Collector-base capacitance VCB = 1 V, f = 1 MHz C
Noise figure ZS = Z
IC = 0.5 mA
ZS = Z
IC = 1 mA
ZS = Z
I
= 1.5 mA
C
Power gain VCE = 2 V, IC = 0.5 mA, f = 450MHz Gpe @F
VCE = 3 V, IC = 1 mA, f = 945 MHz Gpe @F
VCE = 2 V, IC = 1.5 mA, f = 945 MHz Gpe @F
Collector current for fT max VCE = 2 V, f = 500 MHz I
Real part of input VCE = 3 V, IC = 1 mA, f = 945 MHz Re
impedance
VCE = 2 V, IC = 1.5 mA, f = 945 MHz Re
, f = 450 MHz, VCE = 2 V,
Sopt
, f = 945 MHz, VCE = 3 V,
Sopt
, f = 945 MHz, VCE = 2 V,
Sopt
(BR)CEO
CEsat
F
opt
F
opt
F
opt
C
(h11e)
(h11e)
CES
CBO
EBO
FE
T
T
cb
6 V
0.1 0.4 V
40 90 150
4.7 GHz
5.2 GHz
0.25 pF
1.1 dB
1.8 dB
opt
opt
opt
11.5 dB
10.5 dB
12 dB
50
50
100mA
100 nA
1
m
2 dB
3 mA
W
W
A
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Document Number 85052
Rev. 3, 20-Jan-99
Common Emitter S–Parameters
2
S852T/S852TW
Vishay Telefunken
Z0 = 50 W,T
VCE/V IC/mA f/MHz
= 25_C, unless otherwise specified
amb
0.5 700 0.881 –25.8 1.58 142.2 0.093 69.0 0.935 –13.9
1000 0.818 –35.4 1.50 129.4 0.121 63.5 0.898 –18.6
1100 0.793 –38.8 1.49 125.1 0.130 61.8 0.884 –19.7
1200 0.772 –41.5 1.46 121.3 0.138 60.4 0.873 –21.3
1300 0.746 –45.1 1.44 117.2 0.148 58.6 0.859 –22.6
1.5 700 0.662 –40.3 3.55 125.3 0.085 63.6 0.820 –17.8
1000 0.540 –50.0 2.98 110.7 0.106 60.3 0.756 –20.3
1100 0.502 –52.4 2.82 106.5 0.113 59.5 0.740 –20.8
1200 0.470 –54.8 2.69 102.8 0.118 59.3 0.724 –21.4
1300 0.439 –57.6 2.56 99.0 0.123 58.7 0.710 –21.7
S11 S21 S12 S22
LIN
MAG
100 9.976 –3.8 1.71 174.9 0.015 86.8 0.998 –2.3
200 0.969 –7.9 1.71 168.9 0.029 83.4 0.993 –4.7
300 0.955 –11.7 1.70 163.3 0.044 80.0 0.984 –6.7
400 0.939 –15.5 1.68 157.7 0.058 76.8 0.974 –8.7
500 0.920 –18.9 1.64 151.9 0.070 73.6 0.959 –10.6
600 0.901 –22.4 1.62 147.2 0.082 71.5 0.948 –12.4
800 0.861 –28.9 1.56 137.6 0.104 66.7 0.922 –15.5
900 0.838 –32.3 1.53 133.1 0.114 65.0 0.909 –17.2
100 0.972 –7.5 4.84 170.9 0.016 84.8 0.990 –3.9
200 0.898 –14.5 4.69 161.7 0.031 79.8 0.972 –7.4
300 0.858 –21.0 4.49 153.1 0.045 75.1 0.944 –10.6
400 0.811 –27.0 4.27 145.1 0.057 71.5 0.913 –13.1
500 0.762 –32.2 4.01 137.8 0.067 68.3 0.880 –15.3
600 0.710 –36.8 3.77 131.3 0.077 65.9 0.849 –16.8
800 0.617 –43.8 3.33 120.0 0.093 62.1 0.796 –18.7
900 0.576 –46.9 3.15 115.1 0.099 61.2 0.775 –19.5
ANG
deg deg deg deg
LIN
MAG
ANG
LIN
MAG
ANG
LIN
MAG
ANG
Document Number 85052
Rev. 3, 20-Jan-99
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