Isabellenhütte BKW Series

  • Isabellenhütte

Product Features

  • Current sensing resistor
  • 4-terminal surface-mount design
  • Resistance range from 0.0003Ω to 0.0005Ω
  • Tolerance ±5.0%
  • TCR of <±20 ppm/°C
  • Power rating of 3W
  • Temperature range from -55°C to +140°C

Applications

The BKW 4-terminal current sensing precision shunt resistor series from Isabellenhütte has been designed for use in energy meters and other battery management and current sensing applications. These resistors are qualified for 20A, 40A, 60A and 80A energy meters. The BKW series is available with resistance values from 0.0003Ω to 0.0005Ω as well as excellent long-term stability, meaning energy meters do not require any recalibration. Other benefits include very high reproducibility of R-value and TCR.

  • 4-terminal current sensing resistor
  • Resistance values of 0.0003Ω, 0.0004Ω and 0.0005Ω
  • Tolerance of ±5.0%
  • TCR of <±20 ppm/°C (+20°C to +60°C)
  • Temperature range from -55°C to +140°C
  • Constant current up to 100A (0.0003Ω)
  • Inductance of <3nH
  • Massive copper terminals
  • Mounting: screwed on terminals of kWh-meter
  • Qualified for 20A, 40A, 60A and 80A energy meters

 

Typical applications for the BKW current sensing precision shunt resistor series include:

  • Ideal for single and three-phase energy meters
  • Battery current sensing

Isabellenhütte BKW Series Specification Table

AttributesValue
Resistance value0.3mΩ / 0.4mΩ / 0.5mΩ
Tolerance±5%
TCR ±20 ppm/°C (20-60 °C)
Temperature range-55°C to +140°C
Power rating3W
Internal heat resistance<10°C/W (Rthi)
Inductance<3nH
Stability (deviation after 2000hrs)<0.5% (Tᴋ = 110°C with heatsink)
Tᴋ = Terminal Temperature

Isabellenhütte is one of the world’s leading suppliers of high-quality precision and power resistors. They produce these low-resistance resistors for a variety of applications such as the ones above. Isabellenhütte & Rhopoint Components are your ideal partners when it comes to achieving the best possible measurement results in the smallest spaces. Please visit www.isabellenhuette.de for more information.

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Specifications

Dimensions 11 x 19 x 29mm
Series / Model

Current Rating

Material Type

Maximum Resistance

Minimum Resistance

Package / Size

Power Rating

Product Type

Resistance Value

, ,

Temperature Coefficient

Temperature Range (°C)

Tolerance

Isabellenhütte BKW Series Ordering Info

Below is the model number configuration for the BKW series from Isabellenhütte.

Ordering example: BKW-M-R0003-5.0
BKWXXXXXXX.X

Series / Model (BKW)

BKW
BKW

Material Type (X)

M
MANGANIN®

Resistance Value (XXXXX)

Resistance value, in ohms, is expressed by a series of 5 characters, 4 of which represent significant digits. R (ohms) designates the location of the decimal point.

Tolerance (X.X)

5.0
±5%

Isabellenhütte BKW Series – Available Resistance Values and Tolerances


Resistance Value Part Number Value 5% Tolerance
0.0003Ω R0003
0.0004Ω R0004
0.0005Ω R0005

Isabellenhütte Video Library

We are very pleased to provide you with a range of videos, please see below for the latest content available:

VIDEOS
Introduction to Isabellenhütte Heusler GmbH & Co. KG

Introduction video to Isabellenhütte, their business and product applications examples

Isabellenhütte precision and power resistors application overview

This video highlights customer applications and application options of Isabellenhütte’s precision and power resistors

VIDEOS
Introduction to Isabellenhütte Heusler GmbH & Co. KG

Introduction video to Isabellenhütte, their business and product applications examples

Isabellenhütte precision and power resistors application overview

This video highlights customer applications and application options of Isabellenhütte’s precision and power resistors

Isabellenhütte BKW Series Resources

Product Datasheet

Supporting Product Information

Supporting Manufacturer Information

  • Isabellenhütte

Isabellenhütte BKW Series

Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.