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)
PPA 10 1-20 DC -4 GHz 10 1-10
2
±0.5 ±0.5 ±1.0 1.3:1
11 - 2 0 ±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
PPA 20-10
Desired dB
Value
Basic
Series 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 04/11
300 Dino Drive, Ann Arbor, MI 48103
Tel: 888-244-6638 or 734-426-5553 •Fax: 734-426-5557
www.aeroflex.com/inmet •inmetsales@aeroflex.com
KEY: Inches [Millimeters] .XX ±.03 .XXX ±.010 [.X ±0.8 .XX ±0.25]
