鈥?/div>
NPN Silicon Microwave Power Transistor
Common Base Configuration
Broadband Class C Operation
High Efficiency Interdigitated Geometry
Diffused Emitter Ballasting Resistors
Gold Metalization System
Internal Input and Output Impedance Matching
Hermetic Metal/Ceramic Package
Outline Drawing
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Description
M/A-COM鈥檚 PH1214-25M is a silicon bipolar NPN power
transistor designed for use in L-band, 1.2 - 1.4 GHz pulsed
radars such as air traffic control and long-range weather radars.
Designed for common-base, class C, broadband pulsed power
applications, the PH1214-25M can produce 25 watts of output
power with medium pulse length (150 碌S) at 10 percent duty
cycle. The transistor is housed in a 2-lead, rectangular metal-
ceramic flange package, with internal input and output
impedance matching networks. In addition to L-band pulsed
radars, this high performance transistor can also be used in
pulsed digital communication systems.
Notes: (unless otherwise specified)
1. Tolerances are: inches 鹵 .005鈥?(millimeters 鹵 0.13mm)
Broadband Test Fixture Impedance
F (GHz)
Z
IF
(鈩?
2.1 - j4.5
2.1 - j3.9
2.2 - j3.4
Z
OF
(鈩?
3.7 + j0.9
3.6 + j0.4
3.0 + j0.2
TEST FIXTURE
OUTPUT
CIRCUIT
Absolute Maximum Rating at 25擄C
Parameter
Collector-Emitter Voltage
Emitter-Base Voltage
Collector Current (Peak)
Total Power Dissipation
@ +25擄C
Storage Temperature
Junction Temperature
Symbol
V
CES
V
EBO
I
C
P
TOT
T
stg
T
j
Rating
60
3.0
2.8
58
-65 to +200
200
Units
V
V
A
W
擄C
擄C
1.20
1.30
1.40
TEST FIXTURE
INPUT
CIRCUIT
50
鈩?/div>
ZIF
ZOF
50
鈩?/div>
Electrical Specifications at 25擄C
Symbol
BV
CES
I
CES
R
TH(JC)
P
IN
G
P
畏
R
L
VSWR-T
VSWR-S
Parameter
Collector-Emitter Breakdown
Collector-Emitter Breakdown
Thermal Resistance
Input Power
Power Gain
Collector Efficiency
Input Return Loss
Load Mismatch Tolerance
Load Mismatch Stability
Test Conditions
I
C
= 25 mA
V
CE
= 40 V
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
V
CC
= 28 V, P
o
= 25 W, f = 1.2, 1.3, 1.4 GHz
Min
60
-
-
-
9.5
50
6
-
-
Max
-
2.5
2.6
2.8
-
-
-
3:1
1.5:1
Units
V
mA
擄C/W
W
dB
%
dB
-
-
V2.00
M/A-COM Division of AMP Incorporated
3
North America: Tel. (800) 366-2266, Fax (800) 618-8883
3
Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
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