May 2011 Doc ID 13597 Rev 3 1/16
16
PD85035-E
RF power transistor, LdmoST plastic family
N-channel enhancement-mode lateral MOSFETs
Features
■Excellent thermal stability
■Common source configuration
■POUT = 35 W with 14.9 dB gain @ 870 MHz /
13.6 V
■Plastic package
■ESD protection
■In compliance with the 2002/95/EC1 European
directive
Description
The PD85035-E is a common source N-channel,
enhancement-mode lateral field-effect RF power
transistor. It is designed for high gain, broadband
commercial and industrial applications. It
operates at 13.6 V in common source mode at
frequencies of up to 1 GHz. PD85035-E boasts
the excellent gain, linearity and reliability of ST’s
latest LDMOS technology mounted in the first true
SMD plastic RF power package, PowerSO-10RF.
PD85035-E’s superior linearity performance
makes it an ideal solution for car mobile radio.
The PowerSO-10 plastic package, designed to
offer high reliability, is the first ST JEDEC
approved, high power SMD package. It has been
specially optimized for RF needs and offers
excellent RF performances and ease of assembly.
Mounting recommendations are available in
www.st.com/rf/ (look for application note
AN1294).
Figure 1. Pin connection
PowerSO-10RF
(formed lead)
PowerSO-10RF
(straight lead)
Gate
Source
Drain
Table 1. Device summary
Order codes Package Packing
PD85035-E PowerSO-10RF (formed lead) Tube
PD85035S-E PowerSO-10RF (straight lead) Tube
PD85035TR-E PowerSO-10RF (formed lead) Tape and reel
PD85035STR-E PowerSO-10RF (straight lead) Tape and reel
www.st.com
Contents PD85035-E
2/16 Doc ID 13597 Rev 3
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
2.3 ESD protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PD85035-E Electrical data
Doc ID 13597 Rev 3 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 Drain-source voltage 40 V
VGS Gate-source voltage -0.5 to +15 V
IDDrain current 8 A
PDISS Power dissipation (@ TC = 70 °C) 95 W
TJMax. operating junction temperature 165 °C
TSTG Storage temperature -65 to +150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
RthJC Junction - case thermal resistance 1.0 °C/W
Electrical characteristics PD85035-E
4/16 Doc ID 13597 Rev 3
2 Electrical characteristics
TCASE = +25 °C
2.1 Static
2.2 Dynamic
2.3 ESD protection characteristics
2.4 Moisture sensitivity level
Table 4. Static
Symbol Test conditions Min Typ Max Unit
IDSS VGS = 0 V VDS = 25 V 1 µA
IGSS VGS = 5 V VDS = 0 V 1 µA
VGS(Q) VDS = 10 V ID = 250 mA 3.4 4.6 V
VDS(ON) VGS = 10 V ID = 3 A 0.64 0.7 V
CISS VGS = 0 V VDS = 12.5 V f = 1 MHz 76 pF
COSS VGS = 0 V VDS = 12.5 V f = 1 MHz 45 pF
CRSS VGS = 0 V VDS = 12.5 V f = 1 MHz 1.4 pF
Table 5. Dynamic
Symbol Test conditions Min Typ Max Unit
P3dB VDD = 13.6 V, IDQ = 350 mA f = 870 MHz 35 40 W
GPVDD = 13.6 V, IDQ = 350 mA, POUT = 15 W, f = 870 MHz 15 17 dB
hDVDD = 13.6 V, IDQ = 350 mA, POUT = P3dB, f = 870 MHz 60 72 %
Load
mismatch
VDD = 1 7V, IDQ = 350 mA, POUT = 50 W, f = 870 MHz
All phase angles 20:1 VSWR
Table 6. ESD protection characteristics
Test conditions Class
Human body model 2
Machine model M3
Table 7. Moisture sensitivity level
Test methodology Rating
J-STD-020B MSL 3
PD85035-E Impedance
Doc ID 13597 Rev 3 5/16
3 Impedance
Figure 2. Current conventions
Table 8. Impedance data
Frequency (MHz) ZIN (Ω)Z
DL(Ω)
870 MHz 0.57 +j 0.73 1.73 -j 0.15
Typical performance PD85035-E
6/16 Doc ID 13597 Rev 3
4 Typical performance
Figure 3. Threshold voltage Figure 4. DC output characteristic
Figure 5. ID vs VGS Figure 6. Capacitances vs voltage
0
20
40
60
80
100
120
140
160
0 5 10 15 20 25 30 35 40 45
Vds (V)
Caoacitance (pF)
Ciss Crss Coss
PD85035-E Typical performance
Doc ID 13597 Rev 3 7/16
Figure 7. Pout and Id vs VGS Figure 8. Pout and Id vs VGS
Figure 9. Gain vs Pout and bias current Figure 10. Gain and efficiency vs Pout
0
2
4
6
8
10
12
14
16
18
20
0123456
Vgs (V)
Pout (W)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Id ( A)
Pout Id
Fr eq = 870 M Hz
Vdd = 13.6V
P in = 200mW
0
5
10
15
20
25
30
0123456
Vgs (V)
Pout (W)
0
1
2
3
4
5
6
Id ( A)
Pout Id
Fr eq = 870 MHz
V d d = 13. 6V
P i n = 400mW
10
12
14
16
18
20
22
0 102030405060
Pout (W)
Gain (dB)
Idq = 150mA Idq = 350mA Idq = 500mA
Freq = 870 M Hz
Vdd = 13.6V
10
11
12
13
14
15
16
17
18
19
20
0 5 10 15 20 25 30 35 40 45 50
Pout (W)
Gain (dB)
0
10
20
30
40
50
60
70
80
90
100
Nd (%)
Gain Ef f
Fr eq = 870 M Hz
Vdd = 13.6V
I dq = 350m A
Typical performance PD85035-E
8/16 Doc ID 13597 Rev 3
Figure 11. Pout and Id vs supply voltage Figure 12. Pout and Id vs supply voltage
10
15
20
25
30
35
40
45
50
55
60
65
70
8 9 10 11 12 13 14 15 16 17 18 19
Vdd (V)
Pout (W)
0
1
2
3
4
5
6
Id ( A)
Pout Id
Fr eq = 870 MHz
Idq = 350mA
Pin = 2W
pp y g
10
15
20
25
30
35
40
45
50
55
60
8 9 10 11 12 13 14 15 16 17 18 19
Vdd (V)
Pout (W)
0
1
2
3
4
5
Id (A)
Pout Id
Fr eq = 870 M Hz
I d q = 350m A
P i n = 1.2W
PD85035-E Package mechanical data
Doc ID 13597 Rev 3 9/16
5 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.
Package mechanical data PD85035-E
10/16 Doc ID 13597 Rev 3
Note: Resin protrusions not included (max value: 0.15 mm per side)
Table 9. PowerSO-10RF formed lead (gull wing) mechanical data
Dim. mm. Inch
Min Typ Max Min Typ Max
A1 0 0.05 0.1 0. 0.0019 0.0038
A2 3.4 3.5 3.6 0.134 0.137 0.142
A3 1.2 1.3 1.4 0.046 0.05 0.054
A4 0.15 0.2 0.25 0.005 0.007 0.009
a0.2 0.007
b 5.4 5.53 5.65 0.212 0.217 0.221
c 0.23 0.27 0.32 0.008 0.01 0.012
D 9.4 9.5 9.6 0.370 0.374 0.377
D1 7.4 7.5 7.6 0.290 0.295 0.298
E 13.85 14.1 14.35 0.544 0.555 0.565
E1 9.3 9.4 9.5 0.365 0.37 0.375
E2 7.3 7.4 7.5 0.286 0.292 0.294
E3 5.9 6.1 6.3 0.231 0.24 0.247
F0.5 0.019
G1.2 0.047
L 0.8 1 1.1 0.030 0.039 0.042
R1 0.25 0.01
R2 0.8 0.031
T 2 deg 5 deg 8 deg 2 deg 5 deg 8 deg
T1 6 deg 6 deg
T2 10 deg 10 deg
PD85035-E Package mechanical data
Doc ID 13597 Rev 3 11/16
Figure 13. Package dimensions
Note: Resin protrusions not included (max value: 0.15 mm per side)
Table 10. PowerSO-10RF straight lead mechanical data
Dim. mm. Inch
Min Typ Max Min Typ Max
A1 1.62 1.67 1.72 0.064 0.065 0.068
A2 3.4 3.5 3.6 0.134 0.137 0.142
A3 1.2 1.3 1.4 0.046 0.05 0.054
A4 0.15 0.2 0.25 0.005 0.007 0.009
a0.2 0.007
b 5.4 5.53 5.65 0.212 0.217 0.221
c 0.23 0.27 0.32 0.008 0.01 0.012
D 9.4 9.5 9.6 0.370 0.374 0.377
D1 7.4 7.5 7.6 0.290 0.295 0.298
E 15.15 15.4 15.65 0.595 0.606 0.615
E1 9.3 9.4 9.5 0.365 0.37 0.375
E2 7.3 7.4 7.5 0.286 0.292 0.294
E3 5.9 6.1 6.3 0.231 0.24 0.247
F0.5 0.019
G1.2 0.047
R1 0.25 0.01
R2 0.8 0.031
T1 6 deg 6 deg
T2 10 deg 10 deg
Critical dimensions:
- Stand-off (A1)
- Overall width (L)
Package mechanical data PD85035-E
12/16 Doc ID 13597 Rev 3
Figure 14. Package dimensions
CRITICAL DIMENSIONS:
- Overall width (L)
PD85035-E Package mechanical data
Doc ID 13597 Rev 3 13/16
Figure 15. Tube information
Package mechanical data PD85035-E
14/16 Doc ID 13597 Rev 3
Figure 16. Reel information
PD85035-E
16/16 Doc ID 13597 Rev 3
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