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WH25-16RJI PDF预览

WH25-16RJI

更新时间： 2024-11-09 23:42:15
品牌 Logo 应用领域
其他 - ETC /
页数 文件大小 规格书
3页 148K
描述
WIDERSTAND LEISTUNG CHASSI 16R 500V 25W

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WH25-16RJI 数据手册

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Chassis Mounting  
Wirewould Resistors  
WH SERIES  
● High quality ceramic substrate  
● All welded construction  
● Anodised extruded aluminium case  
● High power dissipation for size  
● Suitable for severe environments  
● Designed for excellent thermal conductivity  
to heatsink  
Electrical Data  
WH5  
EH10  
WH25  
WH50  
NOTES  
Power rating at 25°C  
watts  
10  
15  
25  
50*  
Mounted on  
standard heatsink  
Resistance range  
TCR (-55° to 200°C)  
Resistance tolerance  
Low value limits  
ohms 0.01 to 10k 0.01 to 20k 0.01 to 44k 0.015 to 120k  
ppm/°C  
%
<10Ω : ±75  
≥ to <100 : ±50  
≥100Ω : ±25  
1, 2, 5, 10  
ohms  
1 at 1%  
0.5 at 2%  
0.05 at 5%  
0.01 at 10%  
WH50 0.015 at 10%  
APPROVED CECC 40203 - 006  
AA  
BA  
CA  
DA  
Power rating at 25°C  
watts  
10  
15  
25  
40  
Mounted on  
standard heatsink  
Resistance range  
TCR (-55° to 200°C)  
Resistance tolerance  
Low value limits  
ohms 0.05 to 3.4k 0.05 to 15k 0.05 to 33k 0.05 to 82k  
ppm/°C  
%
≥5Ω ≤ 10Ω ± 100  
1, 2, 5  
1 at 1% 0.5 at 2%  
>10Ω ± 50  
0.05 at 5%  
500  
ohms  
Limiting element voltage volts  
Standard values  
150  
250  
1250  
3.5  
E24 preferred range  
Other values  
to special order  
Mounted on  
Thermal impedance  
°C/watt  
16.0  
10.0 6.0  
standard heatsink  
Operating temperature range °C  
-55 to 200  
*For load at maximum rating mount on heatsink 30.5 cm x 30.5 cm x 1.5 mm  
CONSTRUCTION  
MARKING  
Cap and lead assemblies are fitted to a high purity ceramic  
substrate. The resistive element is wound onto the  
substrate and welded to the caps. The wound rod is then  
moulded and fitted into an aluminium housing to give  
optimum stability and reliability.  
The resistors are legend marked with type reference,  
resistance value and tolerance. Values are marked in  
accordance with IEC 62.  
SOLVENT RESISTANCE  
Resistor and marking withstand all accepted industrial  
cleaning fluids.  
TERMINATIONS  
Material  
Strength  
Solder dipped, copper clad steel wire.  
The terminations meet the requirements of  
IEC 68.2.21  
Solderability  
The terminations meet the requirements of  
IEC 115-1, Clause 4.17.3.2  
General Note  
Welwyn Components reserves the right to make changes in product specification without notice or liability.  
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.  
© Welwyn Components Limited  
Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk  
Issue A 07/99  
123

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