Ohmite Electronic Components

Ohmite Manufacturing Company has been a leading provider of resistors for high current, high voltage and high energy applications for over 80 years. Products includes wirewound, wire element, thick film, and ceramic composition resistors, in addition to variable voltage controls.

Ohmite Electronic components Power resistors

The products include Power resistors, Surface mount resistors, Rheostats etc..They also have chokes, shunts and heatsinks too. Variable Resistors or Potentiometers, Solid State power controls and SMD resistors are also avialable.

Ohmite Electronic Components

History

Ohmite Manufacturing Company started operations in a small shop on the west side of Chicago in 1925. Founded by David T. Siegel, the company’s focus was to manufacture carbon and wire wound ‘lug’ resistors for Chicago’s growing radio manufacturing industry. As the electronics industry grew and continued to develop

Ohmite Mfg. Co.
27501 Bella Vista Parkway, Warrenville IL, 60555, USA.

TTI – Passive and Electromechanical Components

Electronic Components Distributor, provides premier passives and electromechanical parts including hard to find parts. TTI, Inc., a Berkshire Hathaway company, is a specialty distributor of passive, interconnect, electromechanical and discrete components.

TTI – Passive and Electromechanical Components

“TTI, Inc. is the world’s leading authorized distributor specialist offering passive, connector, electromechanical and discrete components.”

Sensor Technology Resource Center

Product line includes: resistors, capacitors, connectors, discretes, potentiometers, trimmers, magnetic and circuit protection components.

Sensor Technology Resource Center

The sensors TTI distributes meet the needs for optical, temperature, humidity, motion, position and a host of other variables. Across a wide range of sizes, shapes and power requirements,

TTI, Inc.
2441 Northeast Parkway, Fort Worth, TX 76106-1816, USA.

Ohmcraft – Thick Film Resistors

These are surface mount resistors, the Resistive Element is Thick Film on Alumina Substrate. We can get Voltage Ratings upto 600 Volts and 50 Gigohms Values. Low noise high stability resistors.

Specialized in the design and manufacturing.of thick film, high voltage, high precision resistor . High voltage resistors and high value resistors.

Ohmcraft – Thick Film Resistors

SM Chip Resistors go to values in giga-ohms. The Technology – Micropenned serpentine patterned resistors, engineered for ultra precision.

SM Series High-Value Resistors - Ohmcraft

SM Series High-Value Resistors – Ohmcraft

“Our patented Micropen precision printing technology provides ultra precision, thick-film high ohmic value, surface mount resistors. Ohmcraft’s Micropenned serpentine patterned resistors produce superior electrical characteristics:”

Ohmcraft ia a division of Micropen Technologies Corporation
93 Paper Mill St., Honeoye Falls, NY 14472

Riedon – High Precision Resistors

Riedon has been providing original equipment manufacturers with high-precision, wirewound resistors and committed customer service since 1960.

Wirewound, Thick & Thin Film, and also Foil resistive products used in industries such as Industrial Automation, Aerospace, Military and Instrumentation.

Riedon – High Precision Resistors

Custom RTD elements, Power resistors as heating elements. Compensation Resistors, Metal and Thick Film networks and arrays.

These Precision Shunt Resistors are designed for systems which have a fast changing electrical load. It has a Heatsink and is encapsulated in epoxy. The substrate is Alumina for Good Heat Transfer but with Electrical Insulation. It is a Resistor formed by a NiCr Foil. (Like Nichrome).

Precision Resistors – UNS 4-T220 – Riedon

Precision Resistors - UNS 4-T220 - Foil NiCr - Riedon

Specifications

  • Resistance from 0.2 Ohm to 80 Ohms
  • Power Rating to 15 Watts
  • Resistance Tolerances to ±0.01%
  • TCR to ±1ppm/K
  • Load Stability to 0.01%

Resistors are probably the most common and well known of all electrical components. Applying a resistor to a circuit normally requires (1) calculating the nominal values needed in the circuit application (resistance, power rating, etc.) then (2) developing acceptable tolerances for the resistor that ensure it will function properly in all extremes of the application.

Read up the “Temperature dependence and TC” – The absolute ohmic value of a resistor is temperature-dependent. Also the “Definition of terms in the specifications of Resistors.”

Riedon Inc
300 Cypress Avenue Alhambra, CA 91801, USA

SRT Resistor Technology and Passives

Development and production of high-grade resistors and special products, including the production equipment.

SRT Resistor Technology and Passives

High Value Resistors in Thick film technology is a Specialization. Products include precision and power resistors, special Ceramic Chip Capacitors, Temperature Sensors and other High Grade Passive Electronic Components.

Tera Giga Ohm HV Resistors – SRT Resistor Technology

Some Specs –

  • Resistance range 500 R – 100 T
  • Tolerances 1%, 2%, 5%, 10%
  • Temperature coefficient ± 20ppm/K – 150ppm/K
  • Temperature range -55°C – +225°C
  • Insulation Resistance 10000M min.

SRT Resistor Technology GmbH
Ostlandstrasse 31, 90556 Cadolzburg, Germany.

Caddock High Performance Film Resistors

Caddock Electronics, Inc. manufactures precision resistors and resistor networks. Caddock uses unique resistance film technologies and process technologies to create solutions for performance demanding applications. They have High Resistance types in the Giga Ohm range and also Precision Types used in Analog Sections of Instrumentation.

Caddock High Performance Film Resistors

The product line consists of over 250 models, including high voltage resistors, current sense resistors, chip resistors, high frequency resistors, rf resistors, load resistors, pulse resistors, and non-inductive power resistors. Custom resistors and resistor network solutions are also available.

High Resistance Resistors from Caddock
Shown above are the High Resistance Resistors from Caddock – 1 Mega Ohms to 10 Giga Ohms

Products Include –

  • Non-Inductive Resistors, Power and Precision
  • Current Sense Resistors
  • Heat Sink Mountable Resistors (TO-220 and TO-126 Power Packages)
  • High Voltage Resistors
  • Low Temperature Coefficient Resistors (Low TC)
  • Ultra Precision Resistors
  • Surface Mount Power Resistors
  • Transient Tolerant Precision Resistors