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參數(shù)資料
| 型號： | PMA |
| 廠商： | Rhopoint Components Ltd. |
| 英文描述： | Precision Resistor |
| 中文描述： | 精密電阻 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大小： | 93K |
| 代理商： | PMA |
R H O P O IN T C O M P O N E N T S L T D
Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX, ENGLAND
Tel: +44/01883 717988, Fax: +44/01883 712938, Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com
Spec Sheet R501-1/2 01/99
Temperature dependence of the electrical resistance
of ISA-PLAN resistors
power derating curve
Remarks:
- Standard resistance values according to E12 with the additional values of 2 and 5
- Minimum quantity of other values on request
This resistor has been developed especially for current
sense applications in SMD-power modules.
The
PMA
has been designed for flip-chip mounting on the
pc-board. All standard soldering processes like reflow-,
infrared-, vapor phase-, dip- and wave-soldering can be
used.
The heat which is generated by the measuring current is
conducted very efficiently to the pc-board via the heat
conductive substrate and the solder joints.
pad size (bottom view)
Precision Resistor Type PMA
-40
-20
20
40
60
80
100
120
T [
o
C]
-0.4
-0.2
0.2
R/R
20
[%]
Technical data
resistance range
2mOhm - 500mOhm
tolerances
1%, 5%
temperature coefficient tcr ( R > 20mOhm )
< ±30ppm/K ( 20°C to 60°C )
applicable temperature range
-55°C to +125°C
load capacity
3W
thermal resistance to ambiente
Rth < 10K/W
dielectric withstanding voltage
100VAC
inductance
< 10nH
stability
deviation <0.5% after 2,000h
0
20
40
60
80
100
120
140
terminal temperature T
K
/ [
o
C]
0.25
0.5
0.75
1
P / P
Nom
stability: 1%
stability: 0.5%
reduced
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