Approval sheet
QUICK REFERENCE DATA
Item
Series No.
General Specification
WF12H
WF08H
0805 (2125)
WF06H
WF04H
Size code
1206 (3216)
0603 (1608)
0402 (1005)
Resistance Range
Resistance Tolerance
10 ~ 1M ( E96+E24 series)
0.5%, 0.1%
TCR (ppm/C) 10 R 1M
Max. dissipation at Tamb=70C
Max. Operation Voltage (DC or RMS)
Max. overload voltage (DC or RMS)
Climatic category
100 ppm/C
1/4 W
200V
400V
1/8 W
150V
300V
1/10 W
50V
1/16W
50V
100V
100V
55/155/56
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 RatedPowerResistanceValue or Max. RCWV listed above, whichever is lower.
Non E96 series resistance upon requested.
3.
DIMENSIONS(unit : mm)
Part No
WF12H
3.10 0.1
1.60 0.1
0.50 0.2
0.45 0.2
0.65 0.15
WF08H
WF06H
WF04H
L
W
Tt
Tb
T
2.0 0.10
1.60 0.10
1.000.05
0.500.05
0.200.10
0.250.10
0.350.05
1.25 0.10 0.80 0.10
0.40 0.20 0.30 0.10
0.40 0.20 0.30 0.20
0.5 0.15
0.45 0.15
MARKING
3-digits marking for 0603 size
WFxxH has same marking rule as WRxx ±1%.
4-digits marking for 1206, 0805 size
Each resistor is marked with a four digits code on the protective coating to designate the nominal resistance
value. For values below 976 the R is used as a digit. For values of 100 or greater, the first 3 digits are
significant, the fourth digit indicates the number of multiple to follow.
Example
RESISTANCE
10
12
100
6800
47000
10R0
12R0
1000
6801
4702
4-digits marking
No marking code for 0402 size
Page 3 of 6
ASC_WFxxH_V03
May – 2023