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.
| Attributes | Value |
|---|---|
| Resistance value | 0.3mΩ / 0.4mΩ / 0.5mΩ |
| Tolerance | ±5% |
| TCR | ±20 ppm/°C (20-60 °C) |
| Temperature range | -55°C to +140°C |
| Power rating | 3W |
| 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.
| Dimensions | 11 x 19 x 29mm |
|---|---|
| Series / Model | |
| Current Rating | |
| Material Type | |
| Maximum Resistance | 500µΩ |
| Minimum Resistance | 300µΩ |
| Mounting / Size | |
| Power Rating | |
| Product Type | |
| Resistance Value | |
| Temperature Coefficient | |
| Temperature Range | -55 to +140°C |
| Tolerance |
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.
| Resistance Value | Part Number Value | 5% Tolerance |
|---|---|---|
| 0.0003Ω | R0003 | |
| 0.0004Ω | R0004 | |
| 0.0005Ω | R0005 |
Due to the technical complexity nature of these components, complete specifications, performance data, dimensional information and configuration options are provided within the product datasheet.
| SKU | Material Type | Resistance Value | Tolerance |
|---|---|---|---|
| Isa BKW-M-R0005-5.0 | 500µΩ | ||
| Isa BKW-M-R0003-5.0 | 300µΩ | ||
| Isa BKW-M-R0004-5.0 | 400µΩ |
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