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STAC3932F Datasheet by STMicroelectronics
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Preliminary data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
March 2010 Doc ID 15513 Rev 4 1/16
16
STAC3932F
RF power transistors
HF/VHF/UHF N-channel MOSFETs
Features
■Excellent thermal stability
■Common source push-pull configuration
■POUT = 580 W typ. with 24.6 dB gain @ 123
MHz
■In compliance with the 2002/95/EC European
directive
Description
The STAC3932F is a N-channel MOS field-effect
RF power transistor. It is intended for use in 100 V
DC large signal applications up to 250 MHz.
Figure 1. Pin connection
!-V
STAC244F
Air cavity
!-V
1. Drain
2. Gate
3. Source
(Bottom side)
1
1
2
23
Table 1. Device summary
Order code Marking Package Packaging
STAC3932F STAC3932F STAC244F Plastic tray
www.st.com
Contents STAC3932F
2/16 Doc ID 15513 Rev 4
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 Impedances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical schematic and BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CASE
STAC3932F Electrical data
Doc ID 15513 Rev 4 3/16
1 Electrical data
1.1 Maximum ratings
1.2 Thermal data
Table 2. Absolute maximum ratings (TCASE = 25 °C)
Symbol Parameter Value Unit
V(BR)DSS(1)
1. TJ = 150 °C
Drain source voltage 250 V
VDGR Drain-gate voltage (RGS = 1 MΩ)250V
VGS Gate-source voltage ±20 V
IDDrain current 20 A
PDISS Power dissipation 625 W
TJMax. 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 0.28 °C/W
Electrical characteristics STAC3932F
4/16 Doc ID 15513 Rev 4
2 Electrical characteristics
(TCASE = 25 °C)
2.1 Static
2.2 Dynamic
Table 4. Static (per side)
Symbol Test conditions Min. Typ. Max. Unit
V(BR)DSS(1)
1. TJ = 150 °C
VGS = 0 V IDS = 100 mA 250 V
IDSS VGS = 0 V VDS = 100 V 1 mA
IGSS VGS = 20 V VDS = 0 V 250 nA
VTH VDS = 10 V ID = 250 mA 2.0 4.0 V
VDS(ON) VGS = 10 V ID = 5 A 2.5 3.5 V
GFS VDS = 10 V ID = 2.5 A 3.0 5.0 S
CISS VGS = 0 V VDS = 100 V f = 1 MHz 492 pF
COSS VGS = 0 V VDS = 100 V f = 1 MHz 134 pF
CRSS VGS = 0 V VDS = 100 V f = 1 MHz 5.2 pF
Table 5. CW
Symbol Test conditions Min. Typ. Max. Unit
POUT VDD = 100 V, IDQ = 2 x 250 mA, PIN = 2 W, f = 123 MHz 450 580 W
hDVDD = 100 V, IDQ = 2 x 250mA, PIN = 2 W, f = 123 MHz 70 %
Table 6. Pulse / 1 mec -- 10 %
Symbol Test conditions Min. Typ. Max. Unit
POUT VDD = 100 V, IDQ = 2 x 250 mA, PIN = 8 W, f = 123 MHz 900 W
hDVDD = 100 V, IDQ = 2 x 250mA, PIN = 8 W, f = 123 MHz 65 %
STAC3932F Impedances
Doc ID 15513 Rev 4 5/16
3 Impedances
Figure 2. Impedance data
Table 7. Impedance data
Freq. ZIN (Ω)Z
DL (Ω)
123 MHz (Pulse) 1.0 - j 4.80 6.3 + j 10.5
123 MHz (CW) 0.8 - j 3.45 5.0 + j 13.0
64 MHz 1.4 - j 10.0 12.8 + j 14.0
Typical Drain
Load Impedance
Typical Input
Impedance
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Electrical schematic and BOM STAC3932F
6/16 Doc ID 15513 Rev 4
4 Electrical schematic and BOM
Figure 3. Electrical schematic
Table 8. Bill of materials
Component Description
C1 270 pF ATC 100B chip capacitor
C2 180 pF ATC 100B chip capacitor
C3, C4 750 pF ATC 700B chip capacitor
C5, C8 43 pF ATC 100B chip capacitor
C6 20 pF ATC 100B chip capacitor
C7 1000 pF ATC 100C chip capacitor
C9 5.6 pF ATC 100B chip capacitor
C10 2200 pF ATC 100C chip capacitor
C11 470 pF ATC 100B chip capacitor
C12 100 µF, 200 V electrolytic capacitor
C13, C14 1200 pF ATC 700B chip capacitor
R1, R2 15 Ω 1/4 watt chip resistor
R3, R4 30 Ω 1/4 watt axial lead resistor
L1 3 turns, 16 ga magnet wire, Id 3/8", .165" turn
spacing, 78 nH
FB1, FB2 ferrite bead, Fair-Rite # 2743019447
B1 1/4λ balun transformer, RG316-25Ω ,16.5"
T1 20 ga teflon coated wire thru 4 copper tubes OD
1/8"x 1.5"
TL1, TL2 0.740" x 0.200" microstrip
TL3, TL4 0.360" x 0.200" microstrip
!-V
STAC3932F Electrical schematic and BOM
Doc ID 15513 Rev 4 7/16
TL5, TL6 0.480" x 0.350" microstrip
TL7, TL8 0.220" x 0.350" microstrip
TL9, TL10 0.350" x 0.660" microstrip
TL11 0.415" x 0.200" microstrip
Board 0.062" FR-4
Table 8. Bill of materials (continued)
Component Description
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Circuit layout STAC3932F
8/16 Doc ID 15513 Rev 4
5 Circuit layout
Figure 4. Circuit layout
Figure 5. Circuit layout
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Figure 7.
Maximum safe operating area
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Doc ID 15513 Rev 4
9/16
STAC3932F Typical performance
Doc ID 15513 Rev 4 9/16
6 Typical performance
Figure 6. Capacitances vs drain supply voltage
Figure 7. Maximum safe operating area
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Typical performance STAC3932F
10/16 Doc ID 15513 Rev 4
Figure 8. Transient thermal impedance
Figure 9. Transient thermal model
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Figure 12. Gain vs ouipm power (CW)
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Doc ID 15513 Rev 4
STAC3932F Typical performance
Doc ID 15513 Rev 4 11/16
Figure 10. Zero temperature coefficient point
Figure 11. Output power and efficiency vs input power (CW)
Figure 12. Gain vs output power (CW)
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Typical performance STAC3932F
12/16 Doc ID 15513 Rev 4
Figure 13. Output power and efficiency vs input power (1 msec - 10%)
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STAC3932F Package mechanical data
Doc ID 15513 Rev 4 13/16
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK is an ST trademark.
Table 9. STAC244F package dimensions
Dim.
mm. Inch
Min Max Min Max
A 5.10 5.59 200 220
A1 4.32 4.83 170 190
B 4.32 5.33 170 210
C 9.65 9.91 380 390
D 19.61 20.02 772 788
E 20.45 20.70 805 815
F 0.08 1.15 0.003 0.006
G 0.89 1.14 0.035 0.045
H 1.45 1.70 0.057 0.067
I 3.18 4.32 0.125 0.170
J 9.27 9.53 0.365 0.375
—»1 2XA1 |<——.— 4-)(a="" .0711="" .5x45'="" ‘fi="" 1="" 1="" 4x.020/0.51r.="" r="" 4x.005/0,1="" 3r;="" c="" j="" 4x030="" 0.76="" r="" 4:3="" 3="" 3="" \-="" d="" e="" —="" 4xf="" ‘="" --="" 4xh="" i="" c="" _="" \="" seating="" 2="" plane="">Package mechanical data STAC3932F
14/16 Doc ID 15513 Rev 4
Figure 14. Package dimensions
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STAC3932F Revision history
Doc ID 15513 Rev 4 15/16
8 Revision history
Table 10. Document revision history
Date Revision Changes
24-Mar-2009 1 First release.
12-Feb-2010 2 Table 1 (packaging) modified
Figure 1 modified.
18-Feb-2010 3 Updated description on cover page.
16-Mar-2010 4
Updated Figure 7: Maximum safe operating area.
Added Figure 8: Transient thermal impedance. and Figure 9:
Transient thermal model.
STAC3932F
16/16 Doc ID 15513 Rev 4
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