WK_15 Datasheet, PDF (1/5 Pages) Vishay Siliconix – High Power Metal Oxide Leaded Resistors

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WK/WR
Vishay Draloric
High Power Metal Oxide Leaded Resistors
FEATURES
• Rugged metal oxide film
• High power dissipation in small size (1 W/0207
size to 4 W/0922 size)
• WK2 is AEC-Q200 qualified
• High temperature coating (up to 200 °C), non-flammable
• Lead (Pb)-free solder contacts
• Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
WK2
SIZE
0207
RATED DISSIPATION
P₇₀
W
1.0
LIMITING ELEMENT
VOLTAGE U_max.
V
500
TEMPERATURE
COEFFICIENT
± ppm/K
50
TOLERANCE
±%
1
RESISTANCE
RANGE

4.7 to 1M
E-SERIES
E24, E96
WK2
0207
1.0
500
100
2
4.7 to 1M
E24, E48
WK2
0207
1.0
WK2
0207
1.0
500
100
5
4.7 to 1M
E24
500
200
5
0.22 to 1M
E24
WR4
0414
2.0
500
200
2
1 to 1M
E24, E48
WR4
0414
2.0
WR5
0617
3.0
500
200
5
0.33 to 1M
E24
750
200
2
1 to 100K
E24, E48
WR5
0617
3.0
750
200
5
0.22 to 560K
E24
WK8
0922
4.0
WK8
0922
4.0
750
200
2
1 to 68K
E24, E48
750
200
5
0.22 to 100K
E24
Notes
• Coating: Green
• Marking: WK2 and WR4 have color code band marking. TCR band will be given to only WK2, 100 ppm, 5 %. WR5 and WK8 are printed
marked.
TECHNICAL SPECIFICATIONS
PARAMETER
Rated Dissipation, P₇₀
Limiting Element Voltage, U_max.(1)
Insulation Voltage, U_ins (1 min)
Thermal Resistance, R_th
Insulation Resistance
Category Temperature Range ⁽²⁾
Failure Rate
Weight
UNIT
W
V
V
K/W

°C
10^-8/h
g
WK2
1.0
500
> 500
 140
0.2
WR4
2.0
500
> 500
 100
> 109
-55 to +200
<1
0.7
WR5
3.0
750
> 500
 70
1.5
WK8
4.0
750
> 500
 60
3.5
Notes
(1) _{Rated voltage P x R}
(2) _{For values < 10R the upper limiting temperature is 155 °C. The power rating is correspondingly lower and can be calculated by Rth.}
Revision: 29-Oct-14
1
Document Number: 20128
For technical questions, contact: [e-mail]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000