Fibre Core Conformal Coated Wirewound Resistor - SPP Series
The SPP Series of wirewound resistors features UL1412 recognition, making them suitable for applications requiring fusing capabilities. These resistors are available with coated or uncoated units, high temperature coefficients upon request, and lower resistance ranges. They are weldable and solderable, offering versatility in assembly. The SPP series is ideal for applications where reliable fusing and stable electrical performance are critical.
Product Attributes
- Brand: BI Technologies IRC Welwyn
- Certifications: UL1412 recognised (UL number E234469), RoHS3 compliant (for Pb-free parts)
- Material: Fibre Core, Conformal Coated Wirewound
- Marking: Five colour bands (value, multiplier, tolerance, flameproof fusible blue band)
- Origin: TT Electronics
Technical Specifications
| IRC Type | Resistance - Std. Range | Tolerance - Std. | Power Rating | Load Life Stability | Max. Continuous Working Voltage | Min. Insulation Resistance | Min. Dielectric Withstanding Volts (RMS) | Current Noise | Ambient Temperature Range | Temperature Coefcient |
| SPP-1 | 0.1 to 1200 | 5% (E24), 10% (E12) | 1W @ 85C | 1 watt @ 85C 10% | PR | 10,000 Meg / 100 Meg | 600V | Negligible | -65 to 160C | 600ppm/C (0.10 - 0.91) 300ppm/C (1 - 1200) |
| SPP-2 | 1 to 470 | 5% (E24), 10% (E12) | 2W @ 85C | 2 watt @ 85C 10% | PR | 10,000 Meg / 100 Meg | 600V | Negligible | -65 to 160C | 600ppm/C (0.10 - 0.91) 300ppm/C (1 - 2400) |
| SPP-3 | 1 to 470 | 5% (E24), 10% (E12) | 3W @ 85C | 3 watt @ 85C 10% | 75V | 10,000 Meg / 100 Meg | 600V | Negligible | -65 to 160C | 600ppm/C (0.10 - 0.91) 300ppm/C (1 - 2400) |
2411181758_TT-Electronics-SPP1UL47R0JLF_C20564405.pdf
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