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Braking Resistors from Isotek are High Powered

Posted on Friday, April 14th, 2017

Isotek Metal Clad Braking Resistors - High Power 

Braking Resistors from Isotek are High Powered

Braking resistors from Isotek are offered in a wide range of HIGH POWER / Dynamic Braking Metal Clad Configurations. These resistors come in aluminum Extruded Aluminum Housings and available with standard and Non-Inductive windings. The ULH and ULV series are UL and TUV recognized.

With resistance ranging from 0.1 Ohms to 2 Mega Ohms, Isotek's braking resistors are designed for applications with 25 W to 1200 W power requirements. Most applications in which these resistors are used require high wattages where space is at a premium. As a result, they are compact in nature and their enclosure chassis are encased in good quality heat sinks. These braking resistors are great in applications such as material handling and fabrication, elevators, hoists, cranes, escalators and mass transit.

With a tubular Aluminum Housing, standard and non-inductive windings, the FRH, and RH series offer resistance ranging 0.1Ohms to 2.2 mOhms. If you are looking for Flat Stamped Housing resistors, Isotek offers IRS, IRN, and IRF series offering resistance range 1 to 5.78 KOhms.

Dynamic Braking 400 W to 3000 W

The IRP series of resistor assemblies are designed to handle power of up to 3,000 watts in free air. These packages are comprised of multiple resistors assembled into a rugged protective case. The base is made using zinc plated steel. The ventilated cover is made with powder-coated steel and is baked for durability.

Dynamic Braking 80 W to 400 W

The RA series of resistor assemblies are designed for use in power inverters and motor drives. These assemblies are based on our standard metal clad resistor technology. The resistors are enclosed in a powder coated steel case, which conforms to international safety specifications.

Dynamic Braking 60 W to 500 W (UL® Recognized)

The ULV (V=vertical) & ULH (H=horizontal) models are UL® recognized metal-clad, high power resistors designed for industrial drives and other applications. The rugged extruded aluminum housing provides electrical isolation and simple two-screw mounting. These models are available with flying leads or tab terminals and can be ordered with inductive or non-inductive windings. Packages 200W and larger are also available with internally mounted, UL listed, thermal protection circuits.

Dynamic Braking 50 W to 500 W (UL® Recognized)

The ULN and ULF models are wire-wound, high-power, metal-clad low inductance resistors designed for industrial and other applications where space is at a premium and performance is a must. The extruded aluminum housing provides rugged and strong protection while the flat design allows for excellent heat dissipation. These models are supplied with flying leads. The most common applications for these models are motor drives, dynamic braking, snubber circuits and power sources for industrial equipment. Both models are recognized UL508 components.

Since 1989, Isotek has been building a solid reputation for quality resistors. Backed by more than 25 years of sales experience and an expanded line, Isotek is now able to offer a wider range of solutions with cost-effective precision products. 

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RedRock™ Sensors and Switches

Posted on Thursday, October 6th, 2016

These tiny sensors offer high magnetic sensitivity with high hysteresis, EMF resistance, and a small package size, all while consuming very little power.

The high-performance RedRock™ RR110, RR120, and RR130 meet the strict power constraints of battery-operated portable devices and electronics, suiting the needs of emerging medical device applications including ingestibles and implantables. Using proven TMR (Tunneling Magnetoresistance) technology, the small package size addresses the needs of current medical applications (such as portable insulin pumps, capsule endoscopes, medical wearables, etc.) as well as consumer smart wearables, high precision fluid level sensing, security and anti-tampering, “wake up” mode switching on a microprocessor, and more.

RR110 Analog Sensor                     RedRock TMR Evaluation Board Demonstration (by Coto Technology)
- Highly sensitive
- Stable temperature performance
- Resistance changes linearly with magnetic distance
- Resistant to mechanical stress

RR120 Digital Sensor
- High sensitivity
- Low power consumption
- High frequency
- Logic output for design flexibility

RR130 Digital Switch
- High sensitivity
- Low power consumption
- High frequency
- Open drain MOSFET for design flexibility

Liquid Level Sensing Using Reed Switch Technology

Posted on Monday, April 25th, 2016

When measuring discrete levels of liquids, such as automobile brake fluid, reed switch technology is simple, inexpensive, and reliable. A magnet mounted on a float closes an adjacent magnetic reed switch as the magnet approaches. Typically, the reed switch is mounted in a plastic or non-magnetic metal tube, and a ring magnet mounted on a float rides up and down the tube on the liquid surface.  This is just one of the many examples of using reed switches for liquid level sensing. 

Please see the product information and applciation notes below for more information.

Liquid Level Sensing Product Information

Liquid Level Sensing Application Notes

For part numbers and data sheets:

CT05 Reed Switches

CT10 Reed Switches

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CotoMOS® 1.5 KV High Voltage Solid State Relay

Posted on Wednesday, January 27th, 2016
NEW High Voltage Solid State Relay Handles 1500V
Coto Technology has released the new CotoMOS® 140 Series solid state relay for high-voltage switching applications. The CotoMOS® 140 series has a load voltage of 1500V and a Load Current of 45mA Max. AC/DC, configurable to 70mA in DC Mode.
NEW High Voltage Solid State Relay Handles 1500V
Coto Technology has released the new CotoMOS® 140 Series solid state relay for high-voltage switching applications. The CotoMOS® 140 series has a load voltage of 1500V and a Load Current of 45mA Max. AC/DC, configurable to 70mA in DC Mode.

NEW HIGH VOLTAGE Solid State Relay Handles 1500V

Coto Technology has released the new CotoMOS® 140 Series solid state relay for high-voltage switching applications. The CotoMOS® 140 Series has a load voltage of 1500V and a Load Current of 45 mA Max. AC/DC, configurable to 70 mA in DC Mode.This is a direct replacement for the Panasonic AQV258 with a significantly higher current carrying capability (45mA vs. 20mA) and a lower On Resistance of 110Ω vs. 345Ω with a high standard I/O Breakdown Voltage to meet EU standards.

                                              

CS140 Data Sheet                          CT140 Data Sheet

Application Note - Small Signal Relays in Photovoltaic Invertors

All CotoMOS®
 Relays

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BFM Series Relay From the Comus Group of Companies

Posted on Monday, June 29th, 2015

Comus International is proud to introduce the BFM series to our growing reed relay Menu. The new BFM series is a high reliability instrumentation grade relay for use in Instrumentation, automatic test equipment probe cards and load boards.

The new BFM series takes practical advantage of Comus’ vertical manufacturing capabilities. Our COTO Technology BV reed switch is used exclusively in every reed relay we make which allows for the lowest industry lead times, superior quality, stable contact resistance, and the very best in reed relay performance. 



The BFM series are industry standard footprint 1Form A and 1Form C potted relays with external metal shells to reduce magnetic interaction. The BFM relays also offer optional Electrostatic and Coaxial (50Ωimpedance) shields and are ideal for use in high frequency applications.

BFM Series Relays

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