Willow’s range of Resistors keeps on growing….

Written by | Latest News

Willow Technologies Limited (www.willow.co.uk) are renowned specialists in resistive materials. We have one of the largest ranges of Resistors available globally.

We have expertise in in High Precision, Power, High Voltage, Surface Mount (SMD), Current Sense, RF, HV Dividers & Custom Resistors in a multitude of technologies, including thick & thin film, planar and wirewound.

We offer a vast array of products providing solutions for a wide range of applications. Our products are widely used in Automotive, Aerospace, Consumer, Military, Industrial, Medical, Security and the Telecoms industries.

We carry a vast array of stock and offer some of the shortest lead-times in the industry; typically, 4-6 weeks for production & 1-2 weeks on our premium delivery. Click here to learn more.

Surface Mount Chip SMD Resistors

 

Our surface mount Chip (SMD) resistors are available in thick film, thin film & wirewound technologies to suit every application.

  • Resistance Values from 0.25mΩ up to 10TΩ
  • Tolerances to +/-0.01%
  • Temperature Coefficient to TCR 2ppm/°C
  • Power Ratings from 0.031W to 35W
  • Voltages up to 6kV
  • High Temperature Versions up to 300°C
  • Low VCR (Voltage Coefficient of Resistance)
  • Suitable for reflow & bondable applications
  • AEC-Q200 Automotive Qualified
  • Non-Magnetic
  • Non-Inductive

High Voltage (HV) Resistors

Willow’s High Voltage (HV) Resistors are available in an array of different package types & styles. They range in size from the tiny 0201 SMD package to resistive components which can handle over 800kV.

  • Resistance Values up to 10TΩ
  • Tolerance to +/-0.05%
  • Temperature Coefficient to TCR 5ppm/°C
  • Power Ratings to 2000 Watts
  • Voltages up to 800kV
  • VCR (Voltage coefficient of resistance) <0.02ppm/V
  • Non-Inductive
  • Suitable for use in air & oil

High Ohmic / High Value Resistors

 

Available from Willow in an array of different package types, styles & technologies, including planar, precision, high voltage, power, cylindrical, SMD, heat sink & tubular.

  • Resistance Values up to 10TΩ
  • Tolerance to +/-0.05%
  • Temperature Coefficient to TCR 10ppm/°C
  • Power Ratings to 400 Watts
  • Voltages up to 500kV
  • Non-Inductive

Low Ohmic Shunt Resistors

Willow’s low ohmic shunt resistors are manufactured from manganin & CuNiMn foil. These extremely low ohm precision resistors are used to accurately measure AC or DC electrical currents.

  • Resistance Values from 0.00004 ohms
  • Tolerance to +/-0.005%
  • Temperature Coefficient to TCR 1ppm/°C
  • Current ranges from 1A to 10,000A
  • 50mV, 100mV & custom outputs available
  • Calibration Certificates Available

 

Power Resistors

Power resistors from Willow are manufactured using a range of resistor technologies, including planar, foil, wirewound, thin & thick film power technology.

  • Resistance Values up to 1TΩ
  • Tolerance to +/-0.01%
  • Temperature Coefficient to TCR 1ppm/°C
  • Power Ratings from 0W to 12kW
  • Voltages up to 400kV
  • Non-Inductive

Precision Resistors

Willow’s precision resistors are available as SMD, through-hole, leaded & cassis mount. Ideal for a multitude of applications & designs.

  • Resistance Values from 0.25mΩ up to 1TΩ
  • Tolerances to +/-0.005%
  • Temperature Coefficient to TCR 1ppm/°C
  • Power Ratings from 0 to 50W
  • Voltages up to 90kV
  • High Temperature Versions up to 350°C
  • Low VCR (Voltage Coefficient of Resistance)
  • Non-Inductive

Voltage Dividers

Willow Technologies range of voltage dividers are available in planar & thick film technologies in SMD, through-hole, leaded & cassis mount package styles.

  • Resistance Values up to 1TΩ
  • Ratio 1:100 to 1:20,000
  • Ratio Tolerances to +/-0.05%
  • Temperature Coefficient to TCR 5ppm/°C
  • Power Ratings from 0 to 50W
  • Voltages up to 55kV
  • Low VCR (Voltage Coefficient of Resistance)
  • Lacquered Coatings for Climatic Protection
  • High Stability
  • Non-Inductive

RF Resistors

 

Willows high power RF Resistors are a compact, high power, rugged, high frequency solution for the most demanding applications.

  • High Power RF Resistors for all DC applications up to 4GHz
  • Resistance Values Available in 50, 100, 150, 200, 250, 300, 400, 600, 800ohm
  • Tolerances +/-1%
  • Temperature Coefficient to TCR 50ppm/°C
  • Power Ratings to 250W
  • Flange & SMD Packages

Pulse Resistors

 

In applications, such as lighting circuits or power suppliers where transient or pulse capability is a critical issue Willow Technologies has the solution.

  • Resistance Values up to 100MΩ
  • Tolerances to +/-0.01%
  • Temperature Coefficient to TCR 20ppm/°C
  • Power Ratings to 270W
  • Impulse Voltages up to 150kV (1.2/50uSec)
  • Low VCR (Voltage Coefficient of Resistance)
  • High Energy to 30,000 Joules
  • Non-Inductive

 

Custom Resistors

Let Willow work as part of your design team to tailor make resistors to work in your designs, customising resistive components to help you achieve your design goals.

  • Resistance Values up to 10TΩ
  • Tolerances to +/-0.005%
  • Temperature Coefficient to TCR 1ppm/°C
  • Power Ratings to 12kW
  • Voltages up to 800kV
  • High Temperature Versions up to 350°C
  • Impulse Voltages up to 150kV (1.2/50uSec)
  • Low VCR (Voltage Coefficient of Resistance)
  • Currents up to 10,000A
  • High Energy to 30,000 Joules
  • Non-Inductive
  • Non-Magnetic
  • Custom Packages & Styles
  • Calibration Certificates Available

 

Last modified: 26th July 2017

Leave a Reply

Your email address will not be published. Required fields are marked *