April 2007 Rev 2 1/9
9
SD1728 (TH430)
RF & Microwave transistors
HF SSB application
Features
■13.56MHz
■44V
■Gold metallization
■Common emitter
■POUT = 200W with 15dB gain
Description
The SD1728 is a 50V epitaxial silicon NPN planar
transistor designed primarily for SSB and
Industrial HF pplications. This device utilizes
emitter ballasting for improved ruggedness and
reliability. Pin connection
M177
Epoxy sealed
1
3
4
2
1. Collector
2. Emitter
3. Base
4. Emitter
www.st.com
Table 1. Device summary
Part number Package Marking
SD1728 M177 TH430
Contents SD1728 (TH430)
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Contents
1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Typical performance (Classe C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SD1728 (TH430) Electrical data
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1 Electrical data
1.1 Maximum ratings
1.2 Thermal data
Table 2. Absolute maximum ratings (TCASE = 25°C)
Symbol Parameter Value Unit
VCBO Collector-base voltage 110 V
VCEO Collector-emitter voltage 55 V
VEBO Emitter-base voltage 4.0 V
ICDevice current 40 A
PDISS Power dissipation 330 W
TJMaximum operating junction temperature 200 °C
TSTG Storage temperature -65 to +150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
RthJC Junction - case thermal resistance 0.4 °C/W
Electrical characteristics SD1728 (TH430)
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2 Electrical characteristics
TCASE = +25 oC
2.1 Static
2.2 Dynamic
Table 4. Static
Symbol Test conditions
Values
Unit
Min Typ Max
BVCES IC = 200mA, VBE = 0V 110 V
BVCEO IC = 200mA, IB = 0mA 55 V
BVEBO IE = 20mA, IC = 0mA 4.0 V
ICEO VCE = 30V, IE = 0mA 500 µA
ICES VCE = 60V, IE = 0mA 500 µA
IEBO VBE = 4.2V 500 µA
hFE VCE = 6V, IC = 10A 23 45
Table 5. hFE ranking (VCE = 6V; IC = 10A)
C23 - 27
D27 - 32
E 32 - 38
F38 - 45
Table 6. Dynamic
Symbol Test conditions
Values
Unit
Min Typ Max
POUT VCC = 44V, f = 13.56MHz 200 250 W
GP VCC = 44V, POUT = 200W 15 17 dB
ηC VCC = 44V, POUT = 200W 56 %
COB VCB = 50V, f = 1MHz 250 360 pF
SD1728 (TH430) Typical performance (Class C)
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3 Typical performance (Class C)
Figure 1. Output power vs input power Figure 2. Collector base capacitance vs
Collector base voltage (f = 1MHz)
0
50
100
150
200
250
300
350
0123456789
Pin (W)
Pout (W)
Class C
Freq: 13.56 MHz
Vcc= 44V
0
100
200
300
400
500
600
700
800
0 102030405060
Collector base capacitance (pf)
Collector base voltage (V)
Figure 3. Power gain vs POUT Figure 4. Efficiency vs POUT
10
12
14
16
18
20
8 54 120 170 210 235
Pout (W)
Power Gain (dB)
Class C
Freq: 13.56
MHz
MHz
VCC = 44V
0%
10%
20%
30%
40%
50%
60%
70%
0 50 100 150 200 250 300
Pout (W)
Eff (%)
Class C
Freq: 13.56
MHz
V44V
MHz
VCC = 44V
Package mechanical data SD1728 (TH430)
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4 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
SD1728 (TH430) Package mechanical data
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Figure 5. Package dimensions
Table 7. M177 (.550 DIA 4/L N/HERM W/FLG) mechanical data
Dim.
mm. Inch
Min Typ Max Min Typ Max
A 5.72 5.97 0.225 0.235
B 6.73 6.96 0.265 0.275
C 21.84 22.10 0.860 0.870
D 28.70 28.96 1.130 1.140
E 13.84 14.10 0.545 0.555
F 0.08 0.18 0.003 0.007
G 2.49 2.74 0.098 0.108
H 3.81 4.32 0.150 0.170
I 7.11 0.280
J 27.43 28.45 1.080 1.120
K 15.88 16.13 0.625 0.635
1011012D
Controlling Dimension: Inches
SD1728 (TH430)
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