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Instec’s EMI Filter Approved for Space Program


Feed-through filter meets Department of Defense mil spec MIL-PRF-28861

For Downloadable Datasheet PDF, News Release PDF and JPG Photo Options: refer to "Downloads Available" below.

7 December 2015 - Instec, LLC, a designer and manufacturer of electromagnetic interference filters & radio frequency interference filters, and an affiliate of Gowanda Holdings, announces it has successfully manufactured and upscreened an EMI feed-through filter to meet the United States Department of Defense specification MIL-PRF-28861. The bolt style, resin sealed, C-circuit filter from the company’s 640 Series will now be used for a US government space program where it will help suppress electromagnetic interference, which would otherwise interfere with the performance of electronic circuitry.

The specific part number is Instec 640-102CN. Performance includes Capacitance of 1000 pF minimum, DC Voltage Rating of 100 V and Current Rating of 5 A DC. Typical Insertion Loss is 8 dB at 10 MHz, 25 dB at 100 MHz and 40 dB at both 1 GHz and 10 GHz. The Operating Temperature Range is -55°C to +125°C. This part is thread type 8-32 and consists of a silver-plated brass case and silver-plated copper nail head lead. A technical datasheet for this part is provided below.

The mil-spec qualification of this part required rigorous testing of electrical, thermal and mechanical properties. Testing was performed at Gowanda’s in-house environmental lab. This lab is Defense Logistics Agency Land and Maritime approved (in support of internal product qualifications).

Instec welcomes inquiries regarding the upscreening of additional filters for applications in defense, military and space communities. The company also supports custom designs with extensive experience, proprietary manufacturing equipment, prototyping capabilities and testing facilities.

For more information contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it , +1-716-532-2234 or go to


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Production Established in Arcade, NY

May 5, 2012 - Instec Filters, a Gowanda Company, has recently opened its new factory in Arcade, NY. Instec has installed state-of-the-art manufacturing equipment in our MLCC and filter assembly lines. Instec has over 200K MLCC discoidal capacitors in stock in a wide variety of values and voltage ratings allowing us to quote most of our filters for 2-3 week delivery.

Instec Filters now offers its Solder-In 610 Series feedthrough filters with steel or Kovar cases. Some applications are more sensitive to thermal excursions and Kovar is recommended. Contact the factory for details and pricing.

Instec Filters recently announced the addition of "press-fit" feedthrough filters to their 610 Series. Data sheets are being developed and will be on line shortly. Contact factory for specs, availability, and pricing.

Instec Filters includes a burn-in screening free-of-charge for all Hermetic filters in the 710 and 730 Series. In addition, up-screening to MIL-PRF requirements or SCD requirements is available for an additional charge. Contact the factory for details or to place an order.


INSTEC Filters is an affiliate of Gowanda Components Group.
All the affiliates of GCG can be viewed here.

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