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METAL GLAZE RESISTORS
METAL GLAZE RESISTORS
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WIRE WOUND RESISTORS - HIGH SURGE IMMUNITY
WIRE WOUND RESISTORS - HIGH SURGE IMMUNITY

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.

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Description

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

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ELECTRICAL PERFORMANCE
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 3w10 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%
STANDARD RESISTANCE VALUES
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%

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