VHF APPLICATIONS
RF & MICROWAVE TRANSISTORS
.500 6LFL (M111)
epoxy sealed
.
136 - 175 MHz
.
28 VOLTS
.
EFFICIENCY 55%
.
COMMON EMITTER
.
GOLD METALLIZATION
.
INTERNAL INPUT MATCHING
.
P
OUT
=
125 W MIN. WITH 9.2 dB GAIN
DESCRIPTION
The SD1480 is a common emitter 28 V Class C
epitaxial silicon NPN planar transistor designed
primarily for VHF communications applications.
This internally matched device incorporates dif-
fused emitter ballasting resistors nad provides high
gain and stable operation across the entire 136
- 175 MHz VHF communications band.
PIN CONNECTION
BRANDING
SD1480
ORDER CODE
SD1480
ABSOLUTE MAXIMUM RATINGS (T
case
=
25
C)
Symbol
Parameter
Value
Uni t
V
CBO
Collector-Base Voltage
65
V
V
CEO
Collector-Emitter Voltage
36
V
V
CES
Collector-Emitter Voltage
65
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
SD1480
1. Collector
3. Emitter
2. Base
4. Emitter
THERMAL DATA
June 20, 1994
1/6
ELECTRICAL SPECIFICATIONS (T
case
=
25
C)
Symbol
Test Conditi ons
Value
Uni t
Mi n.
Typ.
Max.
P
OUT
f
=
150 MHz
P
IN
=
15 W
V
CE
=
28 V
125
--
--
W
P
G
f
=
150 MHz
P
OUT
=
125 W
V
CE
=
28 V
9.2
--
--
dB
c
f
=
150 MHz
P
OUT
=
125 W
V
CE
=
28 V
55
--
--
%
C
OB
f
=
1 MHz
V
CB
=
28 V
--
--
250
pF
Load
Mismatch
f
=
150 MHz
P
IN
=
15 W
V
CE
=
28 V
20:1
--
--
VSWR
STATIC
Symbol
Test Conditions
Value
Unit
Min.
Typ.
Max.
BV
CBO
I
C
=
100 mA
I
E
=
0 mA
65
--
--
V
BV
CES
I
C
=
100 mA
V
BE
=
0 V
65
--
--
V
BV
CEO
I
C
=
100 mA
I
B
=
0 mA
35
--
--
V
BV
EBO
I
E
=
10 mA
I
C
=
0 mA
4.0
--
--
V
I
CES
V
CE
=
30 V
I
E
=
0 mA
--
--
15
mA
h
FE
V
CE
=
5 V
I
C
=
5 A
20
--
200
--
DYNAMIC
TYPICAL PERFORMANCE
OUTPUT CAPACITANCE vs COLLECTOR BASE
VOLTAGE
INPUT CAPACITANCE vs EMITTER BASE VOLTAGE
SD1480
2/6
TYPICAL PERFORMANCE (cont'd)
POWER OUTPUT vs POWER INPUT
INPUT VSWR vs FREQUENCY
POWER OUTPUT vs COLLECTOR EMITTER
VOLTAGE
POWER GAIN & COLLECTOR EFFICIENCY vs
FREQUENCY
SD1480
3/6
C1
: .080pF Arco 462
C2
: 25mF Underwood
C3
: 2.020pF Arco 402
C4, C5
: 15pF Underwood
C6
: 240pF ATC Chip Capacitor
C7
: 270pF ATC Chip Capacitor
C8
: 150pF Underwood
C9
: 180pF Underwood
C10
: 100pF Underwood
C11
: 8.20pF Johanson JMC5501
C12
: 33pF Underwood
C13, C15 : .15
F Disc Capacitor
C14
: 100pF Underwood
C16
: 10
F Electrolytic
L1
: See Detail A
L2
: Ferroxcube VK200 19/4B
L3
: 1 Turn #16 AWG 250 I.D. Close Wound
L4
:
5 Turns #16 AWG 250 I.D. Close Wound
Z1
: Microstrip, .330" W x 1.600" L
Z2
: Microstrip, .200" W x .400" L
Z3
: Microstrip, .200" W x .600" L
Z4
: Microstrip, .200" W x 1.600" L
PCB:
3M 1oz. Doulbe Sided 1/16" Teflon-Glass, Er
=
2.5
TEST CIRCUIT
SD1480
5/6
PDF 
ZIP