Resistors
WIRE WOUND RESISTORS - SILICONE COATED
The WWS series wire wound resistors are manufactured using high quality resistance wires wound on ceramic substrates. The resistors are coated using layers of Flame Proof Epoxy with axial lead wire. In WWS series, resistors up to 5W, the resistance value is color coded with 3 bands plus a tolerance band. An additional black band indicates that the resistor is wire wound. For resistors 6W and above, the value is printed on the resistor.

MPN

SPECIFICATION

Type No. Wattage

DIMENSIONS IN MM

Range in OHMS [Ω] Tolerance Dielectric withstanding Voltage
D L H d

WWS 1 WWS 2 M

1W / 2W 3.20 ± 1.0 9 ±1.0 26 ±2.0 0.55 ± 0.05 0.01 470 5% 350 V

WWS 2 WWS 3 M

2W / 3W 4.25 ± 1.0 11 ± 1.0 26 ±2.0 0.65 ± 0.05 0.01 680 5% 500 V

WWS 3 WWS 4 M

3W / 4W 5.00 ± 1.0 15.00 ± 1.0 26 ±2.0 0.75 ± 0.05 0.01 1K 5% 500 V

WWS 5 WWS 6 M

5W / 6W 6.00± 2.0 18.00 ± 2.0 30 ±2.0 0.75 + 0.05 0.01 3K3 5% 500 V

WWS 6 WWS 7 M WWS 8 MM

6W / 7W / 8W 8.00 ±2.0 25 ± 2.0 38 ±3.0 0.80 ± 0.05 0.1 10K 5% 500 V

WWS 9 WWS 10 M

9W / 10W 8.00± 2.0 30 + 2.0 38 ±3.0 0.80 ± 0.05 0.1 10K 5% 1000 V

‘M’ under ‘Type No.’ denotes miniature size

Tests Condition Spec
Resistance Temp. Coeff. -55°C ~ 200°C ±200ppm/°C
Short Time Overload 5 times of rated wattag e for 5 sec for upto 3w

10 times of rated wattage for 5 sec. above 3w

±2%
Rated Load Rated voltage for 30 min. ± 0.5%
Insulation Resistance 500 V megger 1,000MΩ
Load Life 70°C on-off cycle 1,000hrs. ±3%
E 24 Series
10 11 12 13 15 16 18 20 22 24 27 30
33 36 39 43 47 51 56 62 68 75 82 91
Colour lst figure 2nd figure Multiplier Tolerance
Black 0 0 1
Brown 1 1 10 ± 1%
Red 2 2 100 ± 2%
Orange 3 3 1,000
Yellow 4 4 10,000
Green 5 5 100,000 ± 0.5%
Blue 6 6 1,000,000 ± 0.25%
Violet 7 7 10,000,000 ± 0.1%
Gray 8 8
White 9 9
Gold 0.1 ± 5%
Silver 0.01 ± 10%