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INTRODUCTION
GENERAL SPECIFICATIONS
|
Model |
Power [W] |
Resistance [m目] |
Tolerance [%] |
TCR [ppm] |
Operating Temperature |
|
BWS03 |
5 |
0.5,1,2,3,4 |
▽1(F) |
Max. ▽100 |
-55C to 170C |
|
BWS05 |
7 |
0.2,0.5,1,2,3 |
Max. ▽120 |
CHARACTERISTICS
|
Thermal Shock |
[▽0.1%] -65C, 25C, 125C, 25C 25 cycles |
|
Short Time Overload |
[▽0.2%] Rated Power X 5 for 5 secs. |
|
Resistance to Soldering Heat |
[▽0.2%] 350C 30 sec or 250C 10 min. |
|
Moisture Resistance |
[▽0.2%] 90~98%RH,+25C,+65C,-10C 10 cycles |
|
High Temperature Exposure |
[▽0.2%] 140C for 250 hours |
|
Vibration High Frequency |
[▽0.2%] 15g 10 to 2000Hz 36 cycles |
|
Inductance |
[ <3nH ] |
|
Load Life |
[▽1.0%] 90 min ※ON§ 30 min ※OFF§ for 2000 hours |
DIMENSIONS AND MATERIALS


|
Model |
Value |
Material |
Thickness (t) |
|
BWS03-M |
0.5m目 |
Manganin |
0.88mm+/-0.05 |
|
BWS03-M |
1m目 |
Manganin |
0.43mm+/-0.05 |
|
BWS03-N |
2m目 |
NiCr Alloy |
0.64mm+/-0.05 |
|
BWS03-N |
3m戒 |
NiCr Alloy |
0.43mm+/-0.05 |
|
BWS03-N |
4m戒 |
NiCr Alloy |
0.32mm+/-0.05 |
|
BWS05-M |
0.2m目 |
Manganin |
1.5mm▽0.05 |
|
BWS05-M |
0.5m目 |
Manganin |
0/56mm+/-0.05 |
|
BWS05-N |
1m目 |
NiCr Alloy |
0.90mm+/-0.05 |
|
BWS05-N |
2m目 |
NiCr Alloy |
0.45mm+/-0.05 |
|
BWS05-N |
3m目 |
NiCr Alloy |
0.30mm+/-0.05 |
RATED POWER DEPENDENCE OF RESISTANCE VALUE
|
Model |
Resistance |
Thickness |
TCR |
Power |
|
BWS03M |
0.5 |
0.88 |
▽75ppm/C |
5 |
|
BWS03M |
1 |
0.43 |
▽60ppm/C |
4 |
|
BWS03N |
2 |
0.64 |
▽100ppm/C |
4 |
|
BWS03N |
3 |
0.43 |
▽100ppm/C |
3 |
|
BWS03N |
4 |
0.32 |
▽100ppm/C |
2.5 |
﹛
|
Model |
Resistance |
Thickness |
TCR |
Power |
|
BWS05M |
0.2 |
1.5 |
▽100ppm/C |
7 |
|
BWS05M |
0.5 |
0.56 |
▽100ppm/C |
6 |
|
BWS05N |
1 |
0.9 |
▽120ppm/C |
6 |
|
BWS05N |
2 |
0.45 |
▽120ppm/C |
4 |
|
BWS05N |
3 |
0.3 |
▽120ppm/C |
3.5 |
DERATING CURVES


PULSE ENERGY/PULSE POWER FOR CONTINUOUS OPERATION

This max. curve is only
valid for the resistance value 0.5m. The min. curve is only valid for
the resistance value of 4m. For other resistance values the area in
between the max. and
the min. curve is valid.

This max.
curve is only valid for the resistance value 0.2m. The min. curve is
only valid for
the resistance value 2m.
For other resistance values
the area in between the max. and
the min. curve is valid.
THEORETICAL PCB LAYOUT

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