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Products
- Products
  Spectrum Control EMI Filter Connectors offer US manufacturing and the shortest lead times in the industry
  
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- EMI Protection
  Dual-line EMI filters combine the benefits of two filters in one package saving space and weight
  
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- Components
  We design and manufacture the most advanced line of RF/microwave filters in the industry
  
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- Subsystems
  Use our Butler matrix in a wireless test environment to ensure the signal is optimally conditioned for highest throughput. The new 16×16 channel version can support MIMO (WiFi 7) or multiple lower order devices concurrently.
  
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- Custom Solutions
  From engineering to layout & design to approval process to manufacturing to quality assurance, we can meet and exceed all your thin film requirements.
  
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  - Enabling Technologies
  - Custom Products
- Secure Systems
  Don't ignore the cyber security blind spot. Find out more about our TEMPEST products for both desktop and mobile applications.
  
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Aerospace + Defense
- Aerospace + Defense
  High-power surface acoustic wave (SAW) filters handle power inputs up to +35 dBm with tighter bandwidths and expanded package options.
  
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- Air
- Land
- Sea
- Space
Commercial
- Commercial
  Aerospace highlight... How does 5G Affect Airline Altimeters?
  
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- Wireless Test
- High Temperature
- Healthcare
- Avionics
- Space
About
- About
  CEO VIEW
  
  Rich Sorelle talks about building a new kind of RF company.
  
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- CEO View
- Our Company
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EIS

APITech offers a complete line of coaxial Electromagnetic Interference (EMI) electromagnetic spectrum management solutions, from components to complex assemblies.

Undoubtedly, best known for our Spectrum Control™ line of coaxial EMI components, the company also offers a wide range of ceramic capacitors, filtered connectors, and magnetics for use in a variety of defense, aerospace, industrial, energy, commercial, and medical applications. APITech also offers comprehensive EMC testing services at an on-site lab to help assist customers in meeting and passing global EMC test standards. Other featured product brands include: Filtran Group, Keytronics, and Texas Spectrum Electronics.

Spectrum Control Inc.

Founded in 1968, the Spectrum Control Inc. brand is best known for its leading line of Electromagnetic Interference (EMI) filters.

Keytronics

First launched in 1971, the Keytronics Inc. brand of products spans custom magnetic devices, transformers, and custom electronic equipment designed and manufactured in accordance with the requirements of MIL-T-27.

Filtran Group

Since 1969, major producers of communications equipment, peripherals, instrumentation, and process control equipment have trusted Filtran® brand electronic components.

Texas Spectrum Electronics

APITech acquired Texas Spectrum Electronics (TSE) in 2014. The TSE product line includes a wide range of custom application-specific EMI and EMP filtering and surge suppression products.

Ceramic Manufacturing Capabilities

Learn more about the ceramics products being manufactured in State College, PA USA.

Markets We Serve