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Resistive Film Technologies

Inmet Powerfilm Chip & Flange Mount Attenuators

Powerfilm Chip Attenuators

Powerfilm chip attenuators from API Inmet come in two varieties: "Temperature Stable" (standard) and "Temperature Variable" attenuators. The standard attenuators reduce the RF power uniformly at all temperatures while the temperature-variable chips are designed to reduce their attenuation at elevated temperatures to provide optimal response needed in signal- leveling applications. Chip attenuators are used in amplifier circuits, receivers, up/down converters, phase-matched arrays, and switching applications. Depending on desired specifications, chips are fabricated on BeO, Aluminum Nitride, or Alumina ceramics with either thin or thick resistors. The attenuators are available with 1-30 dB values for frequencies up to 18 GHz and power levels up to 20 Watts average. Chips are available in wide selection of sizes from 0608 (.060"x.075") to 5050 (.50"x.500") and with various terminal finish options. Other designs, values and options may be available upon request.

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Available Chip Attenuators

Model
View PDF
Power
(Watts)
Frequency
(GHz)
Ceramic
Substrate
Resistor
Film
Wraps Finish
Option
Width
(Inches)
Length
(Inches)
Height
(Inches)
PCAAF 0.75 8.0 Alumina Thin F N, T, H, G 0.060 0.075 0.010
PCAAL 0.75 18.0 Alumina Thin Tabbed G, T, H 0.060 0.075 0.040
PCAAW 0.75 18.0 Alumina Thin W N, T, H, G 0.060 0.075 0.010
PCAA 0.75 18.0 Alumina Thin N, T, H, G 0.060 0.075 0.010
PCAF 1.5 4.0 Alumina Thin F N, T, H, G 0.125 0.150 0.010
PCA 1.5 12.4 Alumina Thin N, T, H, G 0.125 0.150 0.010
PCAW 1.5 12.4 Alumina Thin W N, T, H, G 0.125 0.150 0.010
PCAL 1.5 12.4 Alumina Thin Tabbed G, T, H 0.125 0.150 0.040
KPA10 10 4.0 BeO Thin G N, T, H 0.100 0.200 0.040
KPA20 20 4.0 BeO Thin G N, T, H 0.250 0.250 0.040
2KNA100 100 2.3 AlN Thin & Thick G, Tabbed N, T, H 0.350 0.225 0.040
3KNA100 100 3.0 AlN Thin G, Tabbed N, T, H 0.375 0.250 0.040
2KNA150 150 1.9 AlN Thin & Thick G, Tabbed N, T, H 0.375 0.250 0.040
1KNA250 250 1.0 AlN Thin & Thick G, Tabbed N, T, H 0.375 0.375 0.040
2KNA250 250 2.3 AlN Thin & Thick G, Tabbed N, T, H 0.500 0.500 0.040

Finish Options: N - Silver over Nickel, T - Tin-lead Solder, H - Lead-free Solder, G - Gold



Inmet Powerfilm Chip & Flange Mount Attenuators

Temperature Variable Attenuators

Powerfilm temperature-variable chip attenuators are designed to reduce their attenuation at elevated temperatures to provide optimal response needed in signal-leveling applications. TCA chips are fabricated on Alumina ceramics with proprietary thick resistors. The attenuators are available with 1-10 dB values for frequencies up to 12 GHz and power levels up to 2 Watts. Temperature-variable attenuators are fabricated using the 1215 case size (.120" x .150") and with various wraps and terminal finish options. Other designs, values and options may be available upon request.

Model Power
(Watts)
Frequency
(GHz)
VSWR Temperature Coefficient
of Attenuation
Ceramic
Substrate
Resisitor
Film
Wraps Finish
Option
Width
(Inches)
Length
(Inches)
Height
(Inches)
TCAF-N05 1.5 12.0 1.50 -0.005 Alumina Thick F N, T, H 0.125 0.150 0.010
TCA-N05 1.5 12.0 1.50 -0.005 Alumina Thick N, T, H 0.125 0.150 0.010
TCAW-N05 1.5 12.0 1.50 -0.005 Alumina Thick W N, T, H 0.125 0.150 0.010
TCAF-N09 1.5 12.0 1.50 -0.009 Alumina Thick F N, T, H 0.125 0.150 0.010
TCA-N09 1.5 12.0 1.50 -0.009 Alumina Thick N, T, H 0.125 0.150 0.010
TCAW-N09 1.5 12.0 1.50 -0.009 Alumina Thick W N, T, H 0.125 0.150 0.010

Finish Options: N - Silver over Nickel, T - Tin-lead Solder, H - Lead-free Solder, G - Gold

Wrap Options

F Wrap

G Wrap

Tabbed

F Wrap G Wrap Tabbed

W Wrap

No Wrap

W Wrap No Wrap