Walsin Technology Corporation
Page 3 of 8 WFxxHD ±0.5% Version 09 Nov.-2006
QUICK REFERENCE DATA
Item General Specification
Series No. WF12H WF08H WF06H WF04H
Size code 1206 (3216) 0805 (2125) 0603 (1608) 0402 (1005)
Resistance Range 10Ω ~ 1MΩ ( E96+E24 series) Tolerance ±0.5%
TCR (ppm/°C) 10Ω≤ R ≤ 1MΩ ≤ ± 100 ppm/°C ≤ ± 200 ppm/°C
Max. dissipation at Tamb=70°C 1/4 W 1/8 W 1/10 W 1/16W
Max. Operation Voltage (DC or RMS) 200V 150V 50V 50V
Max. overload voltage (DC or RMS) 400V 300V 100V 100V
Climatic category (IEC 60068) 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
ValueResistancePower RatedRCWV ×= or Max. RCWV listed above, whichever is lower.
3. Non E96 series resistance upon requested.
DIMENSIONS
Part No WF12H WF08H WF06H WF04H
L 3.10 ± 0.1 2.0 ± 0.10 1.60 ± 0.10 1.00±0.05
W 1.60 ± 0.1 1.25 ± 0.10 0.80 ± 0.10 0.50±0.05
Tt 0.50 ± 0.2 0.40 ± 0.20 0.30 ± 0.10 0.20±0.10
Tb 0.45 ± 0.2 0.40 ± 0.20 0.30 ± 0.20 0.25±0.10
t 0.65 ± 0.15 0.5 ± 0.15 0.45 ± 0.15 0.35±0.05
MARKING
WFxxH ±0.5% 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 97Ω6 the R is used as a digit. For values of 100Ω or greater, the first 3 digits are
significant, the fourth digit indicates the number of multiple to follow.
Example
RESISTANCE 10Ω 12Ω 100Ω 6800Ω 47000Ω
4-digits marking 10R0 12R0 1000 6801 4702
3-digits marking for 0603 size
No marking code for 0402 size