Inmet is a solution minded, performance driven, and customer focused global supplier of passive RF and Microwave components.

Resistive Film Technologies

Inmet Powerfilm Chip & Flange Mount Attenuators

Powerfilm Components

Inmet designs and manufactures resistive surface mount devices that include both thin-film and thick-film technology available in chip, leaded, or flange-mount packages. These surface-mount devices include legacy designs from the former KDI business unit. The new Powerfilm brand surface-mount resistive components from API Inmet are enhanced to include even more reliability, options, frequency, and power than ever before.

Employing a proprietary proven and economical thick/thin film processing approach, these resistive devices are optimized for your high-power signal conditioning, leveling, gain optimization and matching network challenges.

  • Frequency Performance up to 27 GHz
  • Power Ranges up to 800 Watts
  • Standard Attenuation Ranges up to 30 dB
  • Standard Ohm Values from 5 to 300 Ohms
  • Wide selection of flange and cases footprint sizes varying from .020"x.040" to 1.900"x1.000"
  • Chip wrap configurations optimized for power, frequency or surface-mount applications
  • Gold, Silver, tin-lead and lead-free tinned finishes are available for most parts

API Inmet manufacturing, test, and inspection processes are designed for manufacturability and maintained at the highest levels of quality. Powerfilm attenuators, terminations and resistors screened at high-reliability and space-level requirements are available as surface-mount chips and flange assemblies. Powerfilm products easily designed-in, are readily available, and are priced competitively. Click on the model names for detailed specifications.

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Available Powerfilm Components

Product Image Description

Chip Attenuators

Inmet Powerfilm Chip & Flange Mount Attenuators

Used in amplifier circuits, receivers, up/down converters, phase-matched arrays, and switching applications

Frequencies up to 18 GHz and power levels up to 250 Watts

Sizes from 0608 (.060" x .075") to 5050 (.500" x .500")


Temperature Variable
Chip Attenuators

Inmet Powerfilm Chip & Flange Mount Attenuators

Designed to compensate for temperature-induced system gain variation

Operation up to 12 GHz operation and power level up to 2 Watts

Available in different wrap configurations and terminal finishes

Linear all-passive design construction


Chip Resistors

Inmet Powerfilm Chip Resistor

Used in hybrid attenuators and Wilkinson power dividers

Frequencies up to 18 GHz, power levels up to 250 Watts

Available in "X", "W" and "S" wrap configurations

Values from 5 to 300 Ohm in a wide selection of sizes and finishes


Chip Terminations

Inmet Powerfilm Chip Terminations

RF power dissipation in terminations and isolators, combiners, dividers and splitters

Frequencies up to 18 GHz, power levels up to 300 Watts

Available on BeO, Aluminum Nitride, or Alumina ceramics with either thin or thick resistors

"G" wrap style for maximum power and "Z" wrap style for surface-mount applications

Sizes 0204 (.020" x .040") to 3838 (.375" x .375") and with various solder, silver, or gold finish options


Flange Attenuators

Inmet Powerfilm Flange Mount Attenuators

Used in Distributed Antenna Systems (DAS), high-power amplifiers, and isolators

Standard attenuation values of 1, 2, 3, 4, 5, 6, 10, 20 and 30 dB

Frequencies up to 4 GHz, power levels up to 250 Watts

Flange footprint sizes from 0.3" x 0.2" to 1.25" x 0.5"


Flange Resistors

Inmet Powerfilm Flange Resistors

Used in power generators, attenuators or stripline and microstrip hybrids

Resistance values from 5 to 300 Ohms and tolerances from 1 to 5%

Frequencies up to 4 GHz, power levels up to 800 Watts

Flange footprint sizes from 0.3" x 0.2" to 1.9" x 1.0"


Flange Terminations

Inmet Powerfilm Flange Mount Terminations

Applications in isolators, circulators, combiners, dividers and splitters

Low Passive Intermodulation (PIM) models are available

Frequencies up to 7 GHz, power levels up to 800 Watts

Flange footprint sizes from 0.3" x 0.2" to 1.9" x 1.0"


Pill Terminations
and Attenuators

Inmet Powerfilm Pill Terminations and Attenuators

Used for dissipation of power in stripline couplers and isolators

Stripline drop-in circuits with ground compression springs and RF input/output tabs

Frequencies up to 27 GHz, power levels up to 10 Watts


Design Support

Inmet Powerfilm Pill Terminations and Attenuators

S-Parameter Data and Circuit Models

Design Kits

Application Notes