Product Overview
The Fibre Core Conformal Coated Wirewound Resistor SPP Series offers reliable performance with UL1412 recognition, making it suitable for applications requiring fusing capabilities. These resistors are weldable and solderable, with options for coated or uncoated units and high Temperature Coefficients (TCs) upon request. Lower resistance ranges are also available.
Product Attributes
- Brand: TT Electronics / BI Technologies IRC Welwyn
- Certifications: UL1412 recognised (UL number E234469), EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) for Pb-free parts.
- Construction: Fibre Core, Conformal Coated, Wirewound
- Marking: Five color bands (value, multiplier, tolerance, flameproof fusible blue band)
- Origin: Not specified
- Material: Not specified
- Color: Not specified
Technical Specifications
| IRC Type | Resistance - Std. UL Recognised 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 Coefficient |
| 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-SPP2UL15R0JLF_C20562622.pdf
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