K
DI-RESISTOR PRODUC
TS
60 South Jefferson Road, Whippany, NJ 07981
Tel: 973-887-8100 •Fax: 973-884-0445
www.aeroflex-kdi.com •sales@aeroflex-kdi.com
KEY: Inches [Millimeters] .XX ±.03 .XXX ±.010 [.X ±0.8 .XX ±0.25]
The Aeroflex/KDI PPA Series of attenuators utilize a Beryllium
Oxide chip and thin film technology to provide devices which
can dissipate up to 100 watts of R.F. power. The PPA series
must be thermally bonded to a heat sink, using the mounting
holes provided, in order to operate within the temperature
rating indicated. The flange temperatures must not exceed
100°C under rated power conditions.
ORDERING INFORMATION
The Power Attenuators listed are available in 1 dB increments
from 1 thru 20 dB. Specify by selecting any of the series listed
and add the attenuation value desired to the basic series
designation. (See note 3)
SERIES PPA
ATTENUATORS
High Power – DC-4GHz
GENERAL SPECIFICATIONS
Impedance 50 Ohms
Operating Temp. –55°C to +150°C
Attenuation Stability 0.0001 dB/dB/°C
Substrate Beryllium Oxide Ceramic
Resistive Element Proprietary Thin Film
Flange Copper, Nickel Plated per QQ-N-290
Tabs Beryllium Copper, Gold Plated per MIL-G-45204
Cover Alumina Ceramic
.062 [1.58]
.040 [1.02] x
.005±.001 THK
[0.13±0.03]
.300 [7.62]
.160 [4.06] MAX.
.105 [2.67]
.100 [2.54] .100 [2.54]
.200 [5.08]
.125 [3.18] MIN.
TYP
PPA10 OUTLINE
.116 [2.95] DIA.
.062 [1.58]
.060 [1.52] x
.003±.001 THK
[0.08±0.03]
.515 [13.08]
.150 [3.81] MAX.
.105 [2.67]
.250 [6.35]
.125 [3.18] .125 [3.18]
.250 [6.35] MIN.
TYP
PPA20 OUTLINE
.250 [6.35]
MIN
.116 [2.95] DIA.
.003±.001 [0.08±0.03
]
.110 [2.79]
.125 [3.18] .725 [18.42]
.975 [24.77]
.175 [4.45]
.060 [1.52] TYP
.375 [9.52]
.375 [9.53]
.250 [6.35]
MIN TYP
PPA50 OUTLINE
.171 [4.34]
.200 [5.08]
MAX
.125 [3.18]
THRU 2 PLS
.003±.001 [0.08±0.03
]
.210 [5.33]
MAX
.125 [3.18]
.250 [6.35]
MIN TYP
.500 [12.70]
.060 [1.52] TYP
1.250 [31.75]
.875 [22.23]
.188 [4.76]
.405 [10.29]
.250 [6.35]
.500 [12.70]
PPA100 OUTLINE
.171 [4.34]
.160 [4.06]
THRU PLS
PHYSICAL DIMENSIONS
Attenuation(1) Input Attenuation Accuracy (1)
1 dB Increments Frequency(1) Power (dB) VSWR
Model (dB) Range (Watts) dB DC-1 GHz 1-2.5 GHz 2.5-4 GHz (Typical)2
PPA 10 1-20 DC-4 GHz 10 1-10 ±0.5 ±0.5 ±1.0 1.3:1
11-20 ±1.0 ±2.0 ±3.0
PPA 20 1-20 DC-4 GHz 20 1-5 ±0.5 ±0.5 ±0.5
6-9 ±0.5 ±0.5 ±1.0 1.15:1 – DC-1.0 GHz
10-15 ±0.75 ±1.0 ±1.5 1.35:1 – 1.0-2.5 GHz
16-20 ±1.0 ±2.0 ±3.0 1.50:1 – 2.5-4.0 GHz
PPA 50 1-20 DC-1 GHz 50 ±0.3 DC-500 MHz 1.25:1 – DC-500 MHz
±0.5 500 MHz-1 GHz 1.50:1 – 500 MHz–1 GHz
PPA 100 1-20 DC-500 MHz 100 ±0.5 1.25:1 – DC-200 MHz
1.50:1 – 200-500 MHz
PERFORMANCE SPECIFICATIONS
E
XAMPLE: PPA 20-10 Desired
dB
Value
Basic
S
eries PPA Power
NOTES
1. Custom products
are available
at higher
frequencies
with optimized
VSWR and
attenuation
accuracy over
narrow frequency
bandwidths.
2. VSWR as measured
in a 0.125” ground
plane stripline circuit.
3. Standard values
1, 2, 3, 4, 5, 6, 10, 20 dB.
Non-std values available
as special order.
REV 7/06
RoHS
