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| NMM0207SI Vishay Draloric Metal Film, Cylindrical, Fusible Resistors FEATURES * Fusible resistor for constant current designed for overload protection * High positive temperature coefficient * Flame retardant coating * Defined switch-off behaviour STANDARD ELECTRICAL SPECIFICATIONS MODEL POWER RATING P70C1) W 0.35 0.35 TEMPERATURE COEFFICIENT ppm/K + 4500/ 500 + 4500/ 500 TOLERANCE % 5, 10, 20 10, 20 * Coating: beige * Marking: additional 5th band black; for further information see appropriate catalog or web page RESISTANCE RANGE E-SERIES 1R0 - 47R R10 - R91 12 - 24 12 NMM0207SI NMM0207SI 1) Power rating depends on the maximum temperature at the solder point, the component placement density and the substrate material. TECHNICAL SPECIFICATIONS PARAMETER Rated Dissipation at 70C Minimum Overload to Fuse Time to Fuse (max) Max. applicable Voltage after Fusing Thermal Resistance Category Temperature Range Failure Rate Weight / 1000pcs UNIT W W s V K/W C 10 -9 NMM0207SI 0.35 1.5 30 85 220 - 55 / + 125 /h < 30 71 g PACKAGIMG: See SMM0207 ORDERING INFORMATION NMM0207SI MODEL + 4500 / 500 TC ppm / K 36R RESISTANCE VALUE 5% TOLERANCE % BP PACKAGING BP-Blistertape 1500 pcs www.vishay.com 24 For Technical Questions contact : ff1aresistors@vishay.com Document Number 20001 Revision 24-Jun-02 NMM0207SI Metal Film, Cylindrical, Fusible Resistors DIMENSIONS MODEL Dmax Vishay Draloric DIMENSIONS [in millimeters] d* L A max A min NMM0207SI 2.2 D -0.4 5.8 - 0.3 1.2 0.6 * d measured in the middle of the resistor SOLDER PAD DIMENSIONS [in millimeters] MODEL REFLOW SOLDERING a NMM0207SI 1.8 b 2.5 l 2.9 WAVE SOLDERING a 2.4 b 2.5 l 2.8 50 40 30 20 10 7 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 Power in W Power rating P in % Fusing Time in s 120 100 80 60 40 20 0 -55 -25 0 25 50 70 75 100 125 Fusing Performance Derating Ambient Temp. in C PERFORMANCE TEST Endurance Test at 70C IEC 60115-1 4.25.1 Endurance at UCT IEC 60115-1 4.25.3 Overload Test IEC 60115-1 4.13 Thermal Shock IEC 60115-1 4.19 IEC 60068-2-14 Damp Heat Steady State IEC 60115-1 4.24 IEC 60068-2-3 Resistance to Soldering Heat IEC 60115-1 4.18 IEC 60068-2-20 CONDITIONS OF TEST 1000 hours at 70C, 1.5 hours "ON", 0.5 hours "OFF" REQUIREMENTS 2% 2% 2% 2% 2% 1% 1000 hours at 125C without load Short time overload for 2 seconds Rapid change between upper and lower category temperature 56 days at 40C and 93% relative humidity 10 seconds at 260C solder bath temperature SOLDERING INFORMATION * For reflow soldering only * Board has to be thoroughly cleaned after soldering. All flux materials must be completely removed. Document Number 20001 Revision 24-Jun-02 For Technical Questions contact : ff1aresistors@vishay.com www.vishay.com 25 This datasheet has been download from: www..com Datasheets for electronics components. |
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