SPH1500JLF IRCTT | Alldatasheet

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IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc• 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com SPH/SPF Series

  • SPF is fusible
  • ±5%, ±10% tolerance
  • 0.1 ohm to 2400 ohms
  • Weldable and solderable leads
  • 2 watt rated with 1 watt dimensions
  • Drop-in replacement for BWH/BWF
  • Lead free, RoHS compliant construction available
  • TCR’s as low as ±150 ppm/°C standard (custom TC’s available) General Purpose Failsafe Molded Wirewound Resistor Electrical Data IRC Type SPH SPF EIA RS-344 Style CRU2 CRU2 MIL-R-11 Style RC32/RC42 RC32/RC42 Resistance - Std. 0.1Ω to 2400Ω 0.1Ω to 1000Ω Tolerance - Std. ±5%, ±10% ±5%, ±10% Power Rating 2 watt @ 70°C 1 watt @ 115°C Derating to 0 @ 160°C 2 watt @ 70°C 1 watt @ 115°C Derating to 0 @ 160°C Max. Continuous Working Voltage √PR √PR Min. Insulation Resistance 10,000 Meg

100 Meg

10,000 Meg Min. Dielectric ATM Withstanding Volts (RMS) Reduced Pressure 1000V 625V 1000V 625V Hotspot Temperature Rise 145°C @ 2 watts 145°C @ 2 watts Typical Load Life 5% 5% Current Noise Negligible Negligible Dry Wet 1. Resistive Element All resistor types have resistance alloy winding on a braided fiberglass substrate. Intermediate silicone coatings are used to enhance processibility and to provide protection to the resistive element. 2. Termination The SPH and SPF resistors are terminated using an alloy coated copper flashed steel lead welded to a cap of the same material. This termination assembly is mechanically crimped, utilizing an improved crimp design, to the resistive element. 3. Encapsulation The SPH and the SPF are encapsulated uti lizing a compression molded phenolic plastic material. The SPF has a flame resistance coating applied over the resistive element to provide flammability protection when destructive overloads may occur. 4. Marking All products are marked utilizing heat and solvent resistant color code bands consistent with EIA/MIL requirements. The first band is double width to designate wirewound construction. A fifth band, blue in color, is used for flameproof identification. (See notes below) SPH/SPF Series Issue December 2008 Sheet 1 of 3

  • 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com Dimensions (Inches and (mm)) IRC Type A B C D SPH 0.562 ± 0.010 (14.3 ± 0.25) 0.225 ± 0.008 (5.72 ± 0.20) 0.032 ± 0.002 (0.813 ± 0.05) 1.50 ± 0.126 (38.1 ± 3.2) SPF 0.562 ± 0.010 (14.3 ± 0.25) 0.225 ± 0.008 (5.72 ± 0.20) 0.032 ± 0.002 (0.813 ± 0.05) 1.50 ± 0.126 (38.1 ± 3.2) Physical Data C D A B General Purpose Failsafe Molded Wirewound Resistor Environmental Data Test SPH SPF Temperature Coefficient (ppm)* 0.1Ω - 0.16Ω ± 1000 0.18Ω - 0.68Ω ± 800 0.75Ω - 2400Ω ± 400 0.10Ω ± 1700 0.11Ω - 0.16Ω ± 1000 0.18Ω - 0.68Ω ± 800 0.75Ω - 1000Ω ± 400 Dielectric Withstanding Voltage (RMS) 1000V 1000V Momentary Overload 5% 5% Low Temperature Operation 5% 5% Temperature Cycle 5% 5% Humidity 5% 5% Load Life 5% 5% Terminal Strength 5% 5% Resistance to Solder Heat 5% 5% Solderability No Failures No Failures SPH/SPF Series Issue December 2008 Sheet 2 of 3
  • 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com Sample Part No. IRC Type Resistance Range Tolerance J = 5%, K = 10% Lead Free Construction Ordering Data SPH 1500 J LF SPH Power Derating Curve 2.0 2.5 1.5 1.0 0.5 Ambient Temperature (°C) Power (watts) 0 5 0 100 150 20070 160 General Purpose Failsafe Molded Wirewound Resistor SPF Power Derating Curve SPF Typical Fusing SPH and SPF Temperature Rise Chart 2.0 2.5 1.5 1.0 0.5 Ambient Temperature (°C) Power (watts) 0 5 0 100 150 20070 Time (seconds) Power (watts) 0 20 40 60 8 0 100 0.1 ohm 1 ohm 10 ohm 100 ohm 1000 ohm 125 150 100 Power Input (watts) Temperature Rise (°C) 0 0.5 1.0 1.5 2 .0 SPH/SPF Series Issue December 2008 Sheet 3 of 3