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| CMF-55-39, CMF-60-64 Vishay Dale Metal Film Resistors, Special Purpose, Fusible, Flameproof FEATURES * Special filming and coating processes * Fusible - Circuit protection in case of other component failure * Flameproof - Meets EIA RS-325, will not flame when overloaded * Tape and Reel packaging is standard STANDARD ELECTRICAL SPECIFICATIONS MODEL CMF-55-39 CMF-60-64 POWER RATING P70C W 0.25 0.50 RESISTANCE* RANGE STANDARD TOLERANCE % 1 1 TEMPERATURE COEFFICIENT ppm/C 100 100 4R - 10K 4R - 23K *Contact factory for extended values TECHNICAL SPECIFICATIONS PARAMETER Rated Dissipation at 70C Maximum Flame Test Voltage Dielectric Strength Insulation Resistance Operating Temperature Range Weight (max) UNIT W VRMS VAC C g CMF-55-39 0.25 350 450 1010 - 65 / + 165 0.20 CMF-60-64 0.50 500 750 1010 - 65 / + 165 0.50 ORDERING INFORMATION CMF-55-39 MODEL CMF-55-39 = 0.25 watt size CMF-60-64 = 0.5 watt size 1000 VALUE First three digits are significant figures. Last digit specifies the number of zeros to follow. (100 ohm illustrated.) Example: 10R0 = 10 5R10 = 5.1 F TOLERANCE F = 1% www.vishay.com 54 For Technical Questions, contact ff2aresistors@vishay.com Document Number: 31031 Revision 01-Aug-02 CMF-55-39, CMF-60-64 Metal Film Resistors, Special Purpose, Fusible, Flameproof DIMENSIONS in inches [millimeters] Vishay Dale 1.500 0.125* [38.10 3.18] A C Max. * 1.08 0.125 [27.43 3.18] IF TAPE AND REEL D B MODEL CMF-55-39 A 0.240 0.020 [6.10 0.51] 0.370 0.035 [9.40 0.89] B 0.090 0.008 [2.29 0.21] 0.145 0.010 [3.68 0.25] C (Max.) 0.278 [7.06] 0.425 [10.80] D 0.025 0.002 [0.64 0.05] 0.032 0.002 [0.81 0.05] CMF-60-64 MARKING -- DALE -- Model (C55-39 or C60-64) -- Value -- Tolerance, Temperature coefficient -- Date code Fusing time graphs represent an average for the resistance value range. Low resistance parts require higher power to fuse than high resistance parts. It is recommended that values less than 200 ohm be evaluated for specific applications. FUSING TIME (Seconds) 24 22 20 18 16 14 12 10 8 6 4 CMF-55-39 2 0 5 10 15 20 25 30 35 CMF-60-64 APPLIED POWER (Watts) FUSIBLE, FLAMEPROOF (Typical Fusing Times) Document Number: 31031 Revision 01-Aug-02 For Technical Questions, contact ff2aresistors@vishay.com www.vishay.com 55 |
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