D1028UK
01/01
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
DIM
Millimetres
Tol.
Inches
Tol.
A
19.05
0.50
0.75
0.020
B
10.77
0.13
0.424
0.005
C
45
5
45
5
D
9.78
0.13
0.385
0.005
E
5.71
0.13
0.225
0.005
F
27.94
0.13
1.100
0.005
G
1.52R
0.13
0.060R
0.005
H
10.16
0.13
0.400
0.005
I
22.22
MAX
0.875
MAX
J
0.13
0.02
0.005
0.001
K
2.72
0.13
0.107
0.005
M
1.70
0.13
0.067
0.005
N
5.08
0.50
0.200
0.020
O
34.03
0.13
1.340
0.005
P
1.57R
0.08
0.062R
0.003
P
D
Power Dissipation
BV
DSS
Drain Source Breakdown Voltage
BV
GSS
Gate Source Breakdown Voltage
I
D(sat)
Drain Current
T
stg
Storage Temperature
T
j
Maximum Operating Junction Temperature
438W
70V
20V
30A
65 to 150C
200C
MECHANICAL DATA
M
K
J
I
O
N
A
C
(2 pls)
D
F
E
(4 pls)
B
G
(typ)
P
(2 pls)
1
5
4
3
2
H
GOLD METALLISED
MULTI-PURPOSE SILICON
DMOS RF FET
300W 28V 175MHz
PUSHPULL
FEATURES
SIMPLIFIED AMPLIFIER DESIGN
SUITABLE FOR BROAD BAND APPLICATIONS
LOW C
rss
SIMPLE BIAS CIRCUITS
LOW NOISE
HIGH GAIN 13 dB MINIMUM
DR
PIN 1
SOURCE (COMMON)
PIN 2
DRAIN 1
PIN 3
DRAIN 2
PIN 4
GATE 2
PIN 5
GATE 1
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25C unless otherwise stated)
APPLICATIONS
VHF/UHF COMMUNICATIONS
from 1 MHz to 200 MHz
METAL GATE RF SILICON FET
TetraFET
D1028UK
01/01
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
70
6
1
1
7
4.8
0.1
13
60
20:1
360
180
15
V
GS
= 0
I
D
= 100mA
V
DS
= 28V
V
GS
= 0
V
GS
= 20V
V
DS
= 0
I
D
= 10mA
V
DS
= V
GS
V
DS
= 10V
I
D
= 6A
I
D
= 10mA
V
DS
= V
GS
P
O
= 300W
V
DS
= 28V
I
DQ
= 2A
f = 175MHz
V
DS
= 28V
V
GS
= 5V f = 1MHz
V
DS
= 28V
V
GS
= 0
f = 1MHz
V
DS
= 28V
V
GS
= 0
f = 1MHz
V
mA
m
A
V
mhos
V
dB
%
--
pF
pF
pF
ELECTRICAL CHARACTERISTICS
(T
case
= 25C unless otherwise stated)
DrainSource Breakdown
Voltage
Zero Gate Voltage
Drain Current
Gate Leakage Current
Gate Threshold Voltage*
Forward Transconductance*
Gate Threshold Voltage
Matching Between Sides
Common Source Power Gain
Drain Efficiency
Load Mismatch Tolerance
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
HAZARDOUS MATERIAL WARNING
The ceramic portion of the device between leads and metal flange is beryllium oxide. Beryllium oxide dust is highly
toxic and care must be taken during handling and mounting to avoid damage to this area.
THESE DEVICES MUST NEVER BE THROWN AWAY WITH GENERAL INDUSTRIAL OR DOMESTIC WASTE.
R
THjcase
Thermal Resistance Junction Case
Max. 0.4C / W
THERMAL DATA
* Pulse Test:
Pulse Duration = 300
m
s , Duty Cycle
2%
TOTAL DEVICE
PER SIDE
PER SIDE
BV
DSS
I
DSS
I
GSS
V
GS(th)
g
fs
V
GS(th)match
G
PS
h
VSWR
C
iss
C
oss
C
rss
D1028UK
01/01
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
0
2
4
6
8
10
12
14
16
18
20
P in W
0
50
100
150
200
250
300
350
400
P out
W
20
30
40
50
60
70
80
90
100
Drain Efficiency
%
Pout
Drain Efficiency
0
2
4
6
8
10
12
14
16
18
20
P in W
0
50
100
150
200
250
300
350
400
P out
W
12
14
16
18
20
12
Gain
dB
Pout
Gain
Figure 1 Power Output and Efficiency
vs. Power Input.
Figure 2 Power Output & Gain
vs. Power Input.
f = 175MHz
I
dq
= 2A
V
ds
= 28V
f = 175MHz
I
dq
= 2A
V
ds
= 28V
2nd harmonic = -28dBc
3rd harmonic = -40dBc
output at 350W
0
2
4
6
8
10
12
14
16
18
20
P in W
0
50
100
150
200
250
300
350
400
P out
W
20
30
40
50
60
70
80
90
100
Drain Efficiency
%
Pout
Drain Efficiency
Figure 3 IMD vs. Output Power.
0
0.5
1
1.5
2
2.5
I dq A
-50
-40
-30
-20
IMD
dBc
15.5
16.5
17.5
18.5
15.5
16.5
17.5
18.5
Gain
dB
IMD3
IMD5
Gain
Figure 4 IMD & Gain vs. I
dq
f
1
= 175.0 MHz
f
2
= 175.1 MHz
V
DS
= 28V
f
1
= 175.0MHz
f
2
= 175.1MHz
P
out
= 130W PEP
V
ds
= 28V
!Freq
S11
S21
S12
S22
!MHz
mag
ang
mag
ang
mag
ang
mag
ang
20
0.828
-161.3
19.78
103.2
0.013
16.4
0.644
-156.3
30
0.836
-165.9
13.83
91.0
0.013
5.8
0.662
-160.3
40
0.846
-168.2
10.27
82.9
0.012
-0.3
0.687
-161.2
50
0.854
-169.2
8.126
75.9
0.012
-5.2
0.708
-162.2
60
0.867
-170.2
6.259
68.5
0.011
-9.0
0.729
-162.6
70
0.873
-171.2
5.331
64.3
0.01
-11.1
0.754
-163.3
80
0.886
-171.4
4.554
59.5
0.009
-12.8
0.78
-163.5
90
0.896
-172.4
3.883
54.9
0.009
-13.9
0.802
-163.9
100
0.904
-173.0
3.362
50.6
0.008
-14.3
0.813
-164.8
110
0.91
-173.2
3.013
48.6
0.007
-13
0.832
-165.4
120
0.92
-173.6
2.558
44.3
0.006
-10.7
0.851
-166.4
130
0.927
-174.1
2.259
41.2
0.006
-7.6
0.861
-166.6
140
0.931
-174.5
2.012
38.1
0.005
-3.4
0.871
-167.3
150
0.934
-175.3
1.85
35.9
0.005
1.7
0.884
-168.0
160
0.941
-175.2
1.652
32.9
0.004
8.6
0.892
-168.8
170
0.942
-175.9
1.475
30.5
0.004
17.5
0.901
-169.5
180
0.951
-175.8
1.306
28.6
0.004
27.6
0.909
-169.5
190
0.95
-176.4
1.215
28.2
0.004
36.0
0.913
-170.2
200
0.958
-177.2
1.094
27.4
0.004
46.6
0.923
-170.7
210
0.958
-177.2
1.014
25.5
0.005
56.5
0.926
-171.3
220
0.96
-178.2
0.938
24.4
0.005
60.9
0.934
-172.1
230
0.963
-178.0
0.897
22.7
0.005
64.8
0.936
-172.0
240
0.965
-178.7
0.806
20.3
0.006
67.6
0.939
-172.7
250
0.968
-178.7
0.738
18.1
0.006
68.9
0.945
-173.1
260
0.967
-179.0
0.692
17.4
0.007
71.7
0.948
-173.8
270
0.969
-179.8
0.662
17.0
0.007
74.8
0.952
-173.8
280
0.97
-179.4
0.618
16.5
0.007
78.9
0.955
-174.1
290
0.971
-179.3
0.581
16.7
0.008
88.3
0.959
-174.3
300
0.972
179.8
0.557
16.0
0.011
87.4
0.958
-174.7
310
0.974
179.8
0.539
14.2
0.011
83.3
0.963
-174.8
320
0.974
179.3
0.505
11.8
0.012
80.1
0.963
-175.3
330
0.978
179.1
0.472
9.7
0.012
78.9
0.967
-176.3
340
0.979
178.8
0.445
7.5
0.012
78.6
0.967
-176.5
350
0.979
178.8
0.419
6.1
0.013
78.4
0.971
-176.6
360
0.978
178.2
0.379
5.3
0.013
78.7
0.968
-177.0
370
0.978
178.5
0.353
4.9
0.013
79.6
0.973
-177.4
380
0.98
177.9
0.343
4.6
0.014
78.9
0.976
-177.2
390
0.983
178.1
0.321
4.4
0.014
77.9
0.972
-178.0
400
0.984
177.6
0.3
7.7
0.014
82.1
0.975
-177.8
410
0.985
177.2
0.304
7.9
0.015
83.8
0.977
-178.1
420
0.981
177.1
0.299
4.7
0.015
82.5
0.978
-178.3
430
0.977
176.8
0.284
2.2
0.015
82.1
0.977
-178.7
440
0.981
176.4
0.264
0.3
0.016
84.2
0.982
-178.9
450
0.981
176.2
0.245
-0.9
0.016
86.8
0.98
-179.6
460
0.985
176.2
0.237
-0.8
0.017
93.2
0.98
-179.5
470
0.985
176.1
0.226
-0.9
0.02
91.8
0.984
-179.5
480
0.986
175.2
0.209
-0.7
0.022
85.2
0.98
-179.9
490
0.982
175.4
0.205
0.2
0.022
82.4
0.984
179.9
500
0.982
175.4
0.194
-1.3
0.021
80.8
0.983
-180.0
D1028UK
01/01
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
!
V
DS
= 28V, I
DQ
= 1A per side
#
MH
Z
S MA R 50
Typical S Parameters
D1028UK
01/01
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
T2
T3
D1028UK
D1028UK
T4
T6
T5
T1
1u
1u
2-18 pF
47pF
680pF
2-18 pF
12
1n
L2
L1
10k
1n
100k
820K
680pF
Gate-Bias
100
n
1n
90p
F
100n
1000u
28V
D1028UK 175MHz TEST FIXTURE
T1,2,3
7cm Storm Products EXE18 19/30 S1TW coaxial cable on Siemens
A1 x 1 2-hole core.
T4,5
14cm Storm Products EXE18 19/30 S1TW coaxial cable.
T6
11cm Storm Products EXE18 19/30 S1TW coaxial cable
L1
6 turns 1.2mm dia wire, 5mm internal diameter
L2
1.5 turns 0.9mm dia wire on Siemens A1 x 1 2 hole core
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