VHF MOBILE APPLICATIONS
RF & MICROWAVE TRANSISTORS
.500 6LFL (M111)
epoxy sealed
.
175 MHz
.
12.5 VOLTS
.
COMMON EMITTER
.
P
OUT
=
100 W MIN. WITH 6.0 dB GAIN
DESCRIPTION
The SD1477 is a 12.5 V Class C epitaxial silicon
NPN planar transistor designed primarily for VHF
FM communications. This device utilizes diffused
emitter resistors to withstand extremely high VSWR
under rated operating conditions, and is internally
input matched to optimize power gain and effi-
ciency over the 136 - 175 MHz band.
PIN CONNECTION
BRANDING
SD1477
ORDER CODE
SD1477
ABSOLUTE MAXIMUM RATINGS (T
case
=
25
°
C)
Symbol
Parameter
Value
Uni t
V
CBO
Collector-Base Voltage
36
V
V
CEO
Collector-Emitter Voltage
18
V
V
CES
Collector-Emitter Voltage
36
V
V
EBO
Emitter-Base Voltage
4.0
V
I
C
Device Current
20
A
P
DISS
Power Dissipation
270
W
T
J
Junction Temperature
+200
°
C
T
STG
Storage Temperature
-
65 to +150
°
C
R
TH(j-c)
Junction-Case Thermal Resistance
0.65
°
C/W
SD1477
1. Collector
3. Emitter
2. Base
4. Emitter
THERMAL DATA
November 1992
1/6
ELECTRICAL SPECIFICATIONS (T
case
=
25
°
C)
Symbol
Test Conditi ons
Value
Uni t
Min.
Typ.
Max.
P
OUT
f
=
175 MHz
P
IN
=
25 W
V
CC
=
12.5 V
100
--
--
W
G
P
f
=
175 MHz
P
IN
=
25 W
V
CC
=
12.5 V
6.0
--
--
dB
C
OB
f
=
1 MHz
V
CB
=
12.5 V
--
350
--
pF
STATIC
Symbol
Test Conditions
Value
Unit
Min.
Typ.
Max.
BV
CBO
I
C
=
50mA
I
E
=
0mA
36
--
--
V
BV
CES
I
C
=
100mA
V
BE
=
0V
36
--
--
V
BV
CEO
I
C
=
100mA
I
B
=
0mA
18
--
--
V
BV
EBO
I
E
=
10mA
I
C
=
0mA
4.0
--
--
V
I
CES
V
CE
=
15V
I
E
=
0mA
--
--
15
mA
h
FE
V
CE
=
5V
I
C
=
5A
10
--
--
--
DYNAMIC
TYPICAL PERFORMANCE
POWER OUTPUT vs FREQUENCY
POWER OUTPUT vs POWER INPUT
SD1477
2/6
C1, C2
: Arco 462 5 - 80pF
C3, C4
: Unelco 100pF, 350V
C5, C6
: Unelco 120pF, 350V
C7, C8
: Arco 463 9 - 180pF
C9, C12
: Unelco 1000pF, 350V
C10
: Erie .15
µ
F, 200V Red Cap
C11
: 25
µ
F, 25V Electrolytic
C13
: 10
µ
F, 25V Electrolytic
L1
: 1 Turn, #12, 1/4" I.D.
L2, L3
: 1/2" 50
Stripline (.180" Wide)
L4
: 1/8" Thick Copper Strap 1/4" Wide
RFC1
: 1 1/2 Turns on Ferroxcube VK200/19-B
RFC2
: 4 Turn #16 Enamel, 3/8" I.D., 3/8" Long
RFC3
: 4 Turns #16 Enamel on T50-2 Torroid
Board
Material:
3M-K6098, 1/16" Thick
TEST CIRCUIT
SD1477
4/6
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