Product Type: Metal Oxide

Leaded Resistors


KOA Speer offers a wide variety of leaded resistors consisting of different materials. Each type offers a unique advantage. The semi-precision metal film MF resistor meets the requirements of MIL-R-22684. The MO has a flameproof silicone coating equivalent to UL94V0. The carbon film CFP of the CF series has a flameproof coating. The ceramic HPC resistor offers anti-pulse characteristics and are non-inductive. The BGR, BWR, BSR, a ceramic case resistor flame-retardant insulated case, are high power resistors that are excellent with anti-pulse and inrush current with cores of wire-wound and oxide tecnology


  • Suitable for automatic machine insertion
  • Product with lead-free terminations meet EU RoHS and China RoHS requirements
  • AEC-Q200 Qualified


  • High voltage circuits for x-ray generators and electron microscopes
  • Power supply
  • Flyback transformer

KOA Speer

Whether you’re designing the car of tomorrow or connecting the Internet of Things, you need cutting-edge product solutions to bring your design to fruition.  At KOA Speer, we’re the ideal partner to help you do just that.  Our constantly expanding line of passive components will give you the solution to make your concept a reality!

More Than Just Resistors – yes we’re the world leader in thick film resistors, but our product line is broad and growing every day, including:

  • Shunt/Current Sense Resistors
  • Wide Terminal Resistors
  • High Voltage Resistors
  • Thin Film Chip Resistors
  • Surge Resistors

New Passive Component Solutions – our engineering group will work with your design team to develop the passive component solution you need.  Many of the hundreds of new products we’ve introduced in recent years are the result of such collaboration.


Radial Leaded MOV’s in a wide range of sizes and voltages.  Provides transient surge protection for AC voltages up to 1000V.  Peak current handling up to 6500 amps and energy handling up to 625J.  UL1449 certified file no. E476752.


Molded surface mount MOV’s in sizes 3225 and 4032, AC voltages from 60 thru 300V.  Peak current handling up to 1200 amps and energy handling up to 30J.  Surface mount option to low and medium voltage 5mm and 7mm radial leaded disk varistors.

IRC / TT Electronics

We design and manufacture resistors and precision resistor networks. We are recognized as being an innovative leader in the design, development and manufacture of resistors since the very beginning of the electronics industry. We are trusted by designers to provide custom solutions for critical applications from space flight controllers to medical defibrillators.

Other TT Electronics brands include: BI Technologies, Optek ,and Roxspur


RCD is a US based ISO 9001/2008 manufacturer specializing in a breadth of capabilities across passive components.  40+ years of precision and power experience positions them as a leader in markets across the spectrum (instrumentation, audio, medical, military, aerospace & transportation to name just a few).  Their global agility meets the demands of service, quality, delivery and price in a changing landscape.  The RCD SWIFTTM Program is designed to be the “get out of jail” almost free card.  Don’t forget to ask us about it!

NIC Components

NIC Components Corp., a leader in passive component technologies, has been manufacturing and designing passive components for over thirty five years. From a core business of Aluminum Electrolytic Capacitors, NIC has expanded its product offering to Capacitors, Resistors and Inductors with a growing line of specialty devices including Circuit Protection, Lighting and RF Components. NIC maintains engineering, sales and warehousing globally to oversee our production facilities and work closely with the factory sites for quality assurance and best in class customer support.

Stackpole Electronics

Founded in 1928, Stackpole Electronics is a leading global manufacturer of resistive components including Thick and Thin Film Surface Mount resistors, Axial Leaded and Wirewound resistors, Current Sense resistors, Varistors, Inductors and various Power Resistors.