Power Low Ohmic Resistors
(BWL)Lowest Ohmic Value Resistor (BWL) Minimise Power Consumption Preview
In response to demand for more energy efficient products, Token Electronics has expanded its current sensing resistors offering with the launch of the BWL series, its lowest ohmic value resistor, to minimise power consumption.
The BWL series has been designed for current sensing in power electronic systems and the resistors are available in 0.5W to 10W power ratings, with a wide ohmic range starting from as low as 0.005Ω.
Products in the economical, low-inductance BWL series are axial leads with high temperature mold compound, making them well-suited to the industry trend and are ideal for all types of current sensing applications including switching and linear power supplies, instruments and power amplifiers
In addition, the BWL series utilizes metal strip technology, essential for those involved in constructing devices and circuits for the detection of currents.
Token's BWL standard series is lead-free and RoHS compliant and can be a replacement for Vishay, IRC, KAO, Panasonic current sense devices with more competitive price and short lead time.
Contact us with your specific needs.
Material :
- Encapsulation: High temperature mold compound.
- BWL metal strip technology utilizes manganin.
- Element: Self-supporting nickel-chrome alloy.
- Terminals: Tinned copper.
Features :
- Low inductance.
- Excellent load life stability.
- Low temperature coefficient.
- Cooler operation for high power to size ratio.
- Proprietary processing technique produces extremely low resistance values.
Applications :
- Switching and linear power supplies.
- Notebook power management.
- Power amplifiers.
- Instruments.
Low Ohmic (BWL) Technical Specifcations & Dimensions
|
|||||||||
| Type | Rated Watts at 25°C (W) |
Resistance Range (Ω) | Tolerance | Dimensions (Unit: mm) | |||||
| Min | Max | A±0.25 | ΦB±0.25 | Φd | F | ||||
| BWL-0.5 | 0.5 | 0.01 | 1 | ±1% ±2% ±5% |
7.0 | 3.0 | 0.8 | 27.0 | |
| BWL-1 | 1.0 | 0.005 | 2 | 11.0 | 3.0 | 0.8 | 31.0 | ||
| BWL-3 | 3.0 | 0.005 | 2 | 15.0 | 5.2 | 0.8 | 34.0 | ||
| BWL-4 | 4.0 | 0.005 | 5 | 18.0 | 6.5 | 0.8 | 38.0 | ||
| BWL-5 | 5.0 | 0.005 | 1 | 24.0 | 8.4 | 1.0 | 44.0 | ||
| BWL-10 | 10.0 | 0.01 | 1 | 46.5 | 10.0 | 1.0 | 66.0 | ||
Low Ohmic (BWL) Electrical Performance
| Test Items | Test Conditions | Specifications |
| Operating Temp. Range | -55°C ~ 175°C | |
| Insulation Resistance | 500V | >1GΩ |
| Dielectric Withstanding Voltage | 500V AC 1 Min. | ΔR ≤ ±0.1%R |
| Load Life | 70°C on~off cycle 1000 Hrs. | ΔR ≤ ±1%R |
| Moisture-Proof Load Life | 40°C 95% RH on~off cycle 21 Hrs. | ΔR ≤ ±0.2%R |
| Resistance to soldering heat | 350°C, 3.5s | ΔR ≤ ±0.1%R |
| Solderability | 235±5°C, 5s(solder bath method) | IEC68-2-20(1968) |
Low Resistive Resistors (BWL) Order Codes
| BWL | - | 1W | R01 | F | P | ||||||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | |||||||||||||||||||||||
|
|
|
|
|
|||||||||||||||||||||||