TetraFET
D2218UK
METAL GATE RF SILICON FET
MECHANICAL DATA
C
2
A
3
B
D
( 2 p ls )
GOLD METALLISED
MULTI-PURPOSE SILICON
DMOS RF FET
20W – 12.5V – 1GHz
SINGLE ENDED
FEATURES
E
1
G
H
F
• SIMPLIFIED AMPLIFIER DESIGN
• SUITABLE FOR BROAD BAND APPLICATIONS
DRAIN
DP
PIN 1
PIN 3
SOURCE
GATE
PIN 2
• LOW C
rss
• SIMPLE BIAS CIRCUITS
DIM
A
B
C
D
E
F
G
H
mm
16.51
6.35
45°
1.52
6.35
0.13
3.56
0.64
Tol.
0.25
0.13
5°
0.13
0.13
0.03
0.51
0.13
Inches
0.650
0.250
45°
0.060
0.250
0.005
0.140
0.024
Tol.
0.010
0.005
5°
0.005
0.005
0.001
0.020
0.005
• LOW NOISE
• HIGH GAIN – 10 dB MINIMUM
APPLICATIONS
•
VHF/UHF COMMUNICATIONS
from DC to 1 GHz
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
P
D
BV
DSS
BV
GSS
I
D(sat)
T
stg
T
j
Power Dissipation
Drain – Source Breakdown Voltage
Gate – Source Breakdown Voltage
Drain Current
Storage Temperature
Maximum Operating Junction Temperature
70W
40V
±20V
16A
–65 to 150°C
200°C
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
E-mail:
sales@semelab.co.uk
9/99
D2218UK
ELECTRICAL CHARACTERISTICS
(T
case
= 25°C unless otherwise stated)
Parameter
Test Conditions
Min.
BV
DSS
I
DSS
I
GSS
g
fs
G
PS
Drain–Source
Breakdown Voltage
Zero Gate Voltage
Drain Current
Gate Leakage Current
Forward Transconductance*
Common Source Power Gain
Drain Efficiency
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
V
GS
= 0
V
DS
= 12.5V
V
GS
= 20V
I
D
= 10mA
V
DS
= 10V
P
O
= 20W
V
DS
= 12.5V
f = 1GHz
V
DS
= 0
V
GS
= –5V f = 1MHz
f = 1MHz
f = 1MHz
V
DS
= 12.5V V
GS
= 0
V
DS
= 12.5V V
GS
= 0
I
DQ
= 1.6A
I
D
= 10mA
V
GS
= 0
V
DS
= 0
V
DS
= V
GS
I
D
= 0.8A
0.5
1.44
10
40
20:1
40
Typ.
Max. Unit
V
8
8
7
mA
m
A
V
S
dB
%
—
V
GS(th)
Gate Threshold Voltage*
h
VSWR Load Mismatch Tolerance
C
iss
C
oss
C
rss
96
80
8
pF
pF
pF
* Pulse Test:
Pulse Duration = 300
m
s , 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
R
THj–case
Thermal Resistance Junction – Case
Max. 2.5°C / W
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
E-mail:
sales@semelab.co.uk
9/99
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