Fibre Core Conformal Coated Wirewound Resistor - SPP Series
The SPP Series resistors are UL1412 recognised, featuring a fibre core and conformal coating. They are weldable and solderable, offering high temperature coefficients upon request and lower ranges available. These resistors are suitable for applications requiring flameproof fusible characteristics, indicated by a blue band in their marking.
Product Attributes
- Brand: TT Electronics (BI Technologies, IRC, Welwyn)
- Certifications: UL1412 recognised (UL number E234469)
- Compliance: EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) for Pb-free parts
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) |
Dimensions
| IRC Type | A (max.) | B (max.) | C | Lead Diameter |
|---|---|---|---|---|
| SPP-1 | 0.400(10.2) | 0.148(3.8) | 0.032(0.8) | 0.032(0.8) |
| SPP-2 | 0.570(14.5) | 0.170(4.3) | 0.032(0.8) | 0.032(0.8) |
| SPP-3 | 0.570(14.5) | 0.170(4.3) | 0.032(0.8) | 0.032(0.8) |
Environmental Data
| Characteristic | Maximum Limits | Test Method |
|---|---|---|
| Thermal Shock | 5% | EIA Specication RS-344 |
| Low Temperature Operation | 5% | EIA Specication RS-344 |
| Short Time Overload | 5% | EIA Specication RS-344 |
| Commercial Short Time Overload | 5% | EIA Specication RS-344 |
| Resistance to Solder Immersion | 3% | EIA Specication RS-344 |
| Solderability | 95% minimum coverage | EIA Specication RS-344 |
| Moisture Resistance | 5% | EIA Specication RS-344 |
| Life Test | 5% | EIA Specication RS-344 |
2403271644_TT-Electronics-SPP1UL2200JLF_C19331222.pdf
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