HIGH POWER
ATTENUATORS
SERIES PPA
DC-4 GHz
GENERAL INFORMATION
The KDI/Triangle 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.
GENERAL SPECIFICATIONS
Impedance:
50 Ohms
Operating Temperature: –55°C to +150°C
Attenuation Stability:
Substrate:
0.0001 dB/dB/°C
ORDERING INFORMATION
Beryllium Oxide Ceramic
Proprietary Thin Film
Resistive Element:
Flange:
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.
Copper, Nickel Plated per QQ-N-290
Beryllium Copper, Gold Plated per MIL-G-45204
Alumina Ceramic
Tabs:
EXAMPLE:
Basic
PPA 20-10
Cover:
Desired dB
Value
Series PPA
Power
PERFORMANCE SPECIFICATIONS
Attenuation(1)
Input
Power
(Watts)
Attenuation (1) Accuracy
(dB)
1-2.5 GHz
1 dB Increments Frequency(1)
VSWR
Model
(dB)
Range
dB
DC-1 GHz
0.5
2.5-4 GHz
(Maximum)2
1-10
11-20
1-5
6-9
10-15
16-20
0.5
2.0
0.5
0.5
1.0
2.0
1.0
3.0
0.5
1.0
1.5
3.0
PPA 10
1-20
DC-4 GHz
10
1.3:1
1.0
0.5
0.5
0.75
1.0
1.15:1 – DC-1.0 GHz
1.35:1 – 1.0-2.5 GHz
1.50:1 – 2.5-4.0 GHz
1.25:1 – DC-500 MHz
1.50:1 – 500 MHz–1 GHz
1.25:1 – DC-200 MHz
1.50:1 – 200-500 MHz
PPA 20
1-20
DC-4 GHz
20
0.3 DC-500 MHz
0.5 500 MHz-1 GHz
PPA 50
1-20
1-20
DC-1 GHz
50
PPA 100
DC-500 MHz
100
0.5
Notes:
PPA 10 outline
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.
.300
[7,6]
.105[2,67]
.040[1,02] x .005[,0,13]
±.001[0,03] THK.
.200.MIN.
[5,1]
.116[2,95] DIA
3. Standard values 1, 2, 3, 4, 5, 6, 10, 20 dB.
Non-std values available as special order.
.200[5,1]
.100[2,5]
.125[3,18]
TYP MIN.
.200[5,1]
.100[2,5]
PPA 20 outline
.062[1,57]
.160[4,06]
MAX
.515
.108[2,74]
[13,08]
PPA 50 outline
±.001[0,08]
.060[1,52]
.003[0,25]
.975
[24,77]
PPA 100 outline
.250[6,4]
.375
1.250
[31,75]
.
MIN.
.116[2,95] DIA
[9,53]
.171[4,34]
.171[4,34]
MAX.
.330
[8,38]
.500
[12,7]
.003±.001
[0,08±0,03]
.250[6,4]
.060[1,52]
TYP.
.003±.001
[0,08±0,03]
.405
[10,29]
.060[1,52]
TYP.
.125[3,18]
TYP.
.250[6,4] MIN.
.125[3,18]
.160[4,06]
DIA.
.375[9,53]
.062[1,57]
.150[3,8]
.125[3,18]
.187[4,75]
MAX
.250[6,4] MIN.
.500[12,7]
.250[6,4] MIN.
.110[2,79]
.725
.250[6,4] MIN.
[18,42]
.200[5,1] MAX
.125[3,18]
.210[5,33]
.875
[22,23]
KEY: Inches[Millimeters] .XX ±.ꢀ0 .XXX ±.ꢀꢁꢀ [.X ±ꢀ.± .XX ±ꢀ.ꢂꢃ]
60 South Jefferson Road, Whippany, NJ 07981 s Tel: 973-887-8100 s Fax: 973-884-0445
E-Mail: sales@mcekdi-resistor.com s See us on the web @ www.mcekdi-resistor.com
8/02
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