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W21-500RJI PDF预览

W21-500RJI

更新时间： 2024-09-15 23:41:27
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2页 108K
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WIDERSTAND DRAHT EMAILL 500R 100V 2.5W

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W21-500RJI 数据手册

 浏览型号W21-500RJI的Datasheet PDF文件第2页 
Vitreous Enamelled  
Wirewound Resistors  
W20 SERIES  
● All welded construction  
● High purity ceramic substrate  
● Impervious lead free vitreous enamel coating  
● High power dissipation for size  
● High stability and reliability  
● Suitable for harsh environments  
● Overload characteristics ideal  
for protection circuits  
Electrical Data  
Commercial  
W21  
3.0  
1 to 10k  
0.5 to 10k  
0.1 to 10k  
W215  
5.0  
1 to 15k  
W22  
7.0  
1 to 22k  
0.5 to 22k  
0.1 to 22k  
W23  
10.0  
1 to 60k  
W24  
14.0  
1 to 100k  
1 to 100k  
0.2 to 100k  
Power rating at 25°C  
Resistance range at  
watts  
ohms  
ohms  
ohms  
pp/°C  
1% tolerance  
2% tolerance  
5% tolerance  
0.5 to 15k  
0.1 to 15k  
Typically: <+75  
1 to 60k  
0.15 to 60k  
Maximum: +200  
TCR (-55° to 200°C)  
Approved BS CECC 40-201-002  
Power rating at 25°C  
Power rating at 70°C  
Style  
watts  
watts  
ohms  
ohms  
ohms  
ppm/°C  
JB  
2.9  
2.5  
HB  
5.0  
4.3  
KB  
7.0  
6.0  
LB  
10.0  
9.0  
MB  
14.0  
12.0  
Resistance range at  
1% tolerance  
1 to 10k  
0.5 to 10k  
0.1 to 10k  
1 to 15k  
0.5 to 15k  
0.1 to 15k  
1 to 20k  
0.5 to 20k  
0.1 to 20k  
1 to 56k  
1 to 56k  
0.15 to 56k  
≥10 ohms: ±200  
1 to 100k  
1 to 100k  
0.2 to 100k  
2% tolerance  
5% tolerance  
TCR (-55° to 200°C)  
≥5 ohms < 10 ohms: ±400  
Applicable to commercial and approved ranges  
Limiting element voltage  
Standard values  
Thermal impedance  
volts  
100  
160  
200  
500  
750  
22  
E24 preferred. Other values to special order  
88  
°C/watt  
°C  
58  
44  
29  
Ambient temperature range  
-55 to 200  
Physical Data  
Dimensions (mm) & weight (g)  
Type  
W21  
W215  
W22  
W23  
W24  
L max  
12.7  
22.0  
22.0  
38.0  
53.5  
D max  
5.6  
7.0  
8.0  
8.0  
f min  
22.75  
23.1  
23.1  
-
d nom  
Wt.nom  
0.8  
0.8  
0.8  
0.8  
0.8  
1
2
2
3.5  
5
d dia  
D
L
f
8.0  
-
CONSTRUCTION  
400  
300  
200  
100  
A high purity ceramic substrate is assembled with interference fit end caps to which  
are welded the termination wires. The resistive element is wound on the substrate  
and welded to the caps; the vitreous enamel protective coating is then applied.  
W215  
W21  
W23  
W24  
W22  
TERMINATIONS  
Material  
Copper clad steel wire, nickel plated and solder-coated.  
The terminations meet the requirements of IEC 68.2.21.  
The terminations meet the requirements of IEC 115-1,–  
Clause 4.17.3.2.  
W23’s and W24’s are not supplied on tape.  
Minimum lead length is 30 mm.  
Strength  
Solderability  
Length  
MARKING  
The resistors are legend marked with type reference, resistance value and tolerance.  
Values are marked in accordance with IEC 62.  
0
0
5
10  
15  
20  
Dissipation – Watts  
SOLVENT RESISTANCE  
The body protection and marking are resistant to all normal industrial cleaning  
solvents suitable for printed circuits.  
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  
12

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