Approval Sheet
Item
Series No.
General Specification
WF08 Q/R_S WF06 Q/R_S
WF12 Q/R_S
WF04 T/U_S
Size Code
1206
0805
0603
0402
( 3216 )
( 2012 )
( 1608 )
(1005)
Resistance Tolerance
Resistance Range
TCR (ppm/C)
1.0%, 0.5%, 0.25%, 0.1%
1 ~ 30
1 ~ 20
1 ~ 20
1 ~ 20
25 ppm/C : 4.7~20
50 ppm/C : 1 ~ 20
25 ppm/C : 4.7~20
50 ppm/C : 1 ~ 20
50 ppm/C/ 25 ppm/C
Max. Dissipation at
Tamb=70C
1/4W
200V
400V
1/8W
150V
300V
1/10W
75V
1/16W
25V
Max. Operating
Voltage
Max. Overload
Voltage
150V
50V
Operating
Temperature
- 55~ +155C
QUICK REFERENCE DATA
Note :
1.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
2.
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV
Rated Power Resistance
Value
or Max. RCWV listed above, whichever is lower.
3.
1 ~ 20 for 0603/0402 : TCR 25 ppm/ is upon requested.
DIMENSIONS :(unit:mm)
WF12Q/R_S
WF08Q/R_S
WF06Q/R_S
WF04T/U_S
Type
3.05 0.15
1.55 0.15
0.40 0.20
0.40 0.20
0.55 0.15
2.00 0.10
1.25 0.10
0.25 0.20
0.40 0.20
0.50 0.15
1.55 0.10
0.80 0.10
0.25 0.15
0.30 0.15
0.45 0.15
1.00 0.10
0.50 0.05
0.30 0.15
0.30 0.15
0.35 0.05
L
W
A
B
t
Protective coat
t
End termination
Resistive layer
B
A
Ceramic Substrate
1001
T
W
L
Page 3 of 11
ASC_WFxxS V01
Aug - 2018