A Leading Manufacturer of EMI Filters & RFI Filters

Custom Suppression is a leading manufacturer of custom EMI & RFI Filters and assemblies. CSI's strength lies in our ability to design and build EMI & RFI Filters that truly meet and/or exceed your needs, from electrical performances, dimensional requirements, on-time delivery, all at competitive prices. Our products include Solder-in Filters, Resin Sealed Filters & Capacitors, Hermetically Sealed Filters & Capacitors, Custom Filtered Connectors, Custom Filtered D Connectors, Custom Multi-section EMI/RFI Filter Assemblies, as well as Power Line Filters and Commercial Assemblies.

Assembly/Electronmechanical Capability

Since 1986, Custom Suppression has acquired, modified and perfected proven processes and equipment including:
  • Vapor Phase Soldering - processes and techniques up to 300c.
  • Solder Pots - for tin and solder dip of leads, pins and other forms or terminations.
  • Hand Soldering - by certified and experienced assembly solderers.
  • Wire Stripping - for products requiring pig-tail leads and lead forming.
  • Inductor - winding capabilities for toroids and bobbin wound coils.
  • Sub-assembly - in-house designed and made tooling and fixtures.
  • Epoxy Encapsulation - including storing, mixing, blending and curing.

Tests, Measurement, and Inpection Capacity

  • Burn-In and Screening Facilities - Multiple ovens rated up to 150c with capabilities to energized specimens under test with AC and/or DC voltage and currents. 
  • Capacitance Measurements - Equipment with capabilities to measure capacitance and dissipation at 120 Hz, 1000 Hz and 1 MHz.
    Dielectric Withstanding Tests - Equipment capable of subjecting product under test with AC and DC voltages in excess of 1000 volts. 
  • Inductance Measurements - Equipment to measure inductance and Q-factor at various frequencies and currents.
  • Insertion Loss Measurements - Spectrum analyzers, tracking generators, buffers and attenuators for measurements from 10 kHz to over 2 GHZ.
  • Insulation Resistance Measurements - Equipment capable of megaohm measurements with DC voltages up to 1000 volts.
    Life Test Chambers - Multiple ovens rated up to 150c with capabilities to energized specimens under test with AC and/or DC voltages and currents over extended periods of time. 
  • Thermal Shock Tests - Chambers rated to cycle between 150c and -65c.   Capabilities to energized specimens undertest with AC and/or DC voltages and currents over extended periods of time.
  • Mechanical Inspection - Various calipers, micrometers, height gauges, threaded gauges, blocks, weights, dowels and other tools necessary to measure physical dimensions.