TOKEN
BWL Low Resistive Power Resistors
Low Resistance
Power Resistors
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
- Terminals: Tinned copper.
- Element: Self-supporting nickel-chrome alloy.
- BWL metal strip technology utilizes manganin.
- Encapsulation: High temperature mold compound.
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.
Version 2010
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TOKEN
-55
BWL Low Resistive Power Resistors
Technical Specifcations & Dimensions
Power Derating Curve
Rated Power %
100
80
58.5
40
20
0
85
A
B
30±3
F (check point)
Ambient Temp. °C
d
-80 -60 -40 -20
0
20
40
60 80 100 120 140 160 175 200
Type
BWL-0.5
BWL-1
BWL-3
BWL-4
BWL-5
BWL-10
Rated Watts
at 25°C
(W)
0.5
1.0
3.0
4.0
5.0
10.0
Resistance Range
(Ω)
Min
Max
0.01
1
0.005
2
0.005
2
0.005
5
0.005
1
0.01
1
Tolerance
Dimensions (mm)
A±0.25
7.0
11.0
15.0
18.0
24.0
46.5
ΦB±0.25
3.0
3.0
5.2
6.5
8.4
10.0
Φd
0.8
0.8
0.8
0.8
1.0
1.0
F
27.0
31.0
34.0
38.0
44.0
66.0
±1%
±2%
±5%
Electrical Performance
Test Items
Operating Temp. Range
Insulation Resistance
Dielectric Withstanding Voltage
Load Life
Moisture-Proof Load Life
Resistance to soldering heat
Solderability
How to Order
Test Conditions
500V
500V AC 1 Min.
70°C on~off cycle 1000 Hrs.
40°C 95% RH on~off cycle 21 Hrs.
350°C, 3.5s
235±5°C, 5s(solder bath method)
Specifications
-55°C ~ 175°C
>1GΩ
ΔR ≤ ±0.1%R
ΔR ≤ ±1%R
ΔR ≤ ±0.2%R
ΔR ≤ ±0.1%R
IEC68-2-20(1968)
BWL
Part Number
Power Rating (W)
Resistance
Code
R01
R1
1R
1W
R01
F
Code
F
G
J
P
Resistance Tolerance
±1%
±2%
±5%
Resistance Tolerance
Resistance
0.01Ω
0.1Ω
1Ω
Packaging: P (Bulk)
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