Resistors
WIRE WOUND CERAMIC ENCASED RESISTORS
Boat, Axial Mounting
TThe WWB series resistors are wire wound resistors encased in ceramic boat with leads set for axial mounting. WWB series offer a wide range of resistors in the range 100mΩ to 10KΩ, with power ratings 1W to 10W.
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SPECIFICATION |
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| Type | Wattage | DIMENSIONS IN MM |
Range in OHMS [Ω] | Tolerance | |||||
| W | H | L | d | ||||||
WWB 1 |
1 | 5.5 | 5.5 | 13 | 0.60 ± 0.02 | 0.1 | 470 | 5% | |
WWB 2 |
2 | 7.5 | 7.5 | 18 | 0.65 ± 0.02 | 0.1 | 680 | 5% | |
WWB 3 |
3 | 7.5 | 7.5 | 18 | 0.75 ± 0.05 | 0.1 | 1K | 5% | |
WWB 4 |
4 | 8.5 | 8.5 | 20 | 0.75 ± 0.05 | 0.1 | 1K | 5% | |
WWB 5 |
5 | 10 | 10 | 22 | 0.75 ± 0.05 | 0.1 | 3K3 | 5% | |
WWB 7 |
7 | 13 | 13 | 31 | 0.80 ± 0.05 | 0.1 | 10K | 5% | |
WWB 10 |
10 | 13 | 13 | 36 | 0.80 ± 0.05 | 0.1 | 10K | 5% | |
All Size in mm
ELECTRICAL PERFORMANCE
| Tests | Condition | Spec |
|---|---|---|
| Resistance Temp. Coeff. | -55°C ~ 200°C | ±300ppm/°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% |