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Resistor 50W 5% 4,7K
Varenummer:101-581
Varekode:RCH50K004,7
Vægt:9.2g
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Inkl. moms:
Kr. 76,88
v/10Kr. 65,35
v/25Kr. 53,81
v/100Kr. 49,98
v/1000Kr. 46,13
RCH50K004,7 Resistor 50W 5% 4,7KRCH50K004,7 RCH50_RCH50K004,7 DimensionsRCH50K004,7 Derating
Produkt: Modstand
Modstand: 4,7kΩ
Tolerance: ±5%
Effekt, max.: 50W
Features
• 50W at 25°C heatsink mounted (optional)
• Compact size
• Easy mounting
• High insulation: 106MW
Technical Specifications
Resistance Value:
Row E12, Reduced
Tolerance:
±5%
Power Rating
Without Heatsink:
5,5W
With Heatsink1):
50W
Operating Voltage, Max.:
1285V
Dielectric Strength:
3500V
Temperature Coefficient
<1W:
±250ppm/°C
>1W:
±150ppm/°C
Thermal Resistance:
0,8K/W
Temperature Range:
-55...+125°C
Climatic Category:
55/125/56
Derating:
See Curve
1) For calculation of heatsink please see values below Note
Calculation of heatsink
P = DT / [RTH(j-c) + RTH(c-a)]

P = Expressed in W
DT = Difference between maximum working temperature (125°C) and room temperature
RTH(j-c) = Thermal resistance of the component
RTH(c-a) = Thermal resistance of the heatsink and quality of fastening device

Example:
Ambient Temperature 30°C, Power Rating: 70W
1) P = DT / [RTH(j-c) + RTH (c-a)]
2) DT = 125°C - 30°C = 95 K
3) [RTH(j-c) + RTH (c-a)] = DT / P = 95K / 70W = 1,36K/W4) RTH (c-a) = 1,36K/W - 1K/W = 0,36K/W
Manufacturer
Vishay/Sfernice
http://www.vishay.com
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