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SPECIFICATIONS ARE SUBJECT TO CHANGE
Current Sensing Chip Resistors NCSW Series
ENVIRONMENTAL CHARACTERISTICS
Item Specication Test Method Reference Standard
±1% tol. ±2% & ±5% tol.
Temperature Coefcient
of Resistance Within specied value -55°C ~ +125°C IEC60115-1 4.8
JIS-C5201 4.8
Load Life <±1% +0.001W<±3% +0.001W+70°C, 1,000 hours at rated power
1.5 hours ON, 0.5 hours OFF
IEC60115-1 4.25.1
JIS-C5201 4.25.1
0402<±3% +0.005W
Short Time Overload <±1% +0.005W<±3% +0.005W2.5 x rated voltage for 5 seconds IEC60115-1 4.13
JIS-C5201 4.13
0402<±2% +0.005W
Moisture Resistance
(at rated voltage)
<±1% +0.001W<±3% +0.001W+40°C, 90~95% RH, 1000 hours
1.5 hours on, 0.5 hours off
IEC60115-1 4.24
JIS-C5201 4.24
0402<±3% +0.005W
Temperature Cycling <±1% +0.005W-55°C (30 minutes) & +155°C (30 minutes)
5 cycles
IEC60115-1 4.19
JIS-C5201 4.19
Resistance to Soldering
Heat <±1% +0.005W+270°C ± 5°C for 10 sec. ±1 sec. IEC60115-1 4.18
JIS-C5201 4.18
Solderability At least 95% coverage of electrode surface +245°C ± 5°C, 2 sec. ± 0.5sec.
Sn 96.5 / Ag 3.0 / Cu 0.5
IEC60115-1 4.17
JIS-C5201 4.17
High Temperature
Exposure <±1% +0.005W<±2% +0.005W+155°C for 96 hours IEC60115-1 4.23.2
JIS-C5201 4.23.2
Substrate Bending <±1% +0.005W0402 ~ 1206 3mm deection
2010 & 2512 2mm deection
IEC60115-1 4.33
JIS-C5201 4.33
Case Size A B C
0402 0.50 ~ 0.60 0.40 ~ 0.55 0.40 ~ 0.60
0603 0.70 ~ 0.90 0.55 ~ 0.75 0.80 ~ 1.00
0805 1.00 ~ 1.40 0.90 ~ 1.40 0.90 ~ 1.40
1206 2.00 ~ 2.40 1.00 ~ 1.50 1.20 ~ 1.80
2010 3.30 ~ 3.70 1.00 ~ 1.60 2.30 ~ 3.50
2512 3.60 ~ 4.00 1.80 ~ 2.50 2.30 ~ 3.50
RECOMMENDED LAND PATTERN DIM. (mm)
B A
C
B
Sensing
Trace
RECOMMENDED REFLOW
SOLDERING TEMPERATURE PROFILE
200
300
250
50
150
100
0
150°C ~ 180°C
120 Sec.
10 sec.
Peak Temperature 260°C
230°C, 40 sec. max.
Power Derating Curve: For operation above 70°C, power rating must be
derated according to the following chart: