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MECHANICAL DATA
A
B
12
4
M
3
G
C
D
E
F
HK
PIN 1
PIN 3
SOURCE
SOURCE
IJ
DM
PIN 2 DRAIN
PIN 4 GATE
DIM mm
A 24.76
B 18.42
C 45°
D 6.35
E 3.17 Dia
F 5.71
G 12.7 Dia
H 6.60
I 0.13
J 4.32
K 3.17
M 26.16
Tol.
0.13
0.13
0.13
0.13
0.13
0.13
REF
0.02
0.13
0.13
0.25
Inches
0.975
0.725
45°
0.25
0.125 Dia
0.225
0.500 Dia
0.260
0.005
0.170
0.125
1.03
Tol.
0.005
0.005
0.005
0.005
0.005
0.005
REF
0.001
0.005
0.005
0.010
TetraFET
D1203UK
METAL GATE RF SILICON FET
GOLD METALLISED
MULTI-PURPOSE SILICON
DMOS RF FET
30W – 12.5V – 500MHz
SINGLE ENDED
FEATURES
• SIMPLIFIED AMPLIFIER DESIGN
• SUITABLE FOR BROAD BAND APPLICATIONS
• LOW Crss
• USEFUL PO AT 1GHz
• LOW NOISE
• HIGH GAIN – 10 dB MINIMUM
APPLICATIONS
HF/VHF/UHF COMMUNICATIONS
from 1 MHz to 1 GHz
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
PD Power Dissipation
117W
BVDSS
Drain – Source Breakdown Voltage
40V
BVGSS
Gate – Source Breakdown Voltage
±20V
ID(sat)
Drain Current
15A
Tstg Storage Temperature
–65 to 150°C
Tj Maximum Operating Junction Temperature
200°C
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Prelim. 10/99

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D1203UK
ELECTRICAL CHARACTERISTICS (Tcase = 25°C unless otherwise stated)
Parameter
Test Conditions
Min.
Drain–Source
BVDSS Breakdown Voltage
VGS = 0
ID = 100mA
40
IDSS
Zero Gate Voltage
Drain Current
VDS = 12.5V
VGS = 0
IGSS Gate Leakage Current
VGS(th) Gate Threshold Voltage*
gfs Forward Transconductance*
GPS
h
Common Source Power Gain
Drain Efficiency
VSWR Load Mismatch Tolerance
VGS = 20V
ID = 10mA
VDS = 10V
PO = 30W
VDS = 12.5V
f = 500MHz
VDS = 0
VDS = VGS
ID = 3A
IDQ = 0.6A
0.5
2.4
10
50
20:1
Ciss
Coss
Crss
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
VDS = 0
VGS = –5V f = 1MHz
VDS = 12.5V VGS = 0 f = 1MHz
VDS = 12.5V VGS = 0 f = 1MHz
Typ.
Max. Unit
V
1 mA
3 mA
7V
S
dB
%
180 pF
120 pF
12 pF
* Pulse Test: Pulse Duration = 300 ms , Duty Cycle £ 2%
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.
THERMAL DATA
RTHj–case
Thermal Resistance Junction – Case
Max. 1.5°C / W
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Prelim. 10/99