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  2. Komponenter
  3. Modstande
  4. Induktionssvage
  5. RTO50FK004,7

Resistor TO220 50W 5% 4,7K

Varenummer:84-271
Varekode:RTO50FK004,7
Vægt:3.2g
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Inkl. moms:
Kr. 74,54
v/10Kr. 62,11
v/25Kr. 49,69
v/100Kr. 37,26
RTO50FK004,7RTO50FK004,7RTO50FK004,7 DimensionsRTO50FK004,7 DeratingRTO50FK004,7 DeratingRTO50FK004,7 RTO50F_RTO50FK004,7 Dimensions
Features
• 50W at 25°C heatsink mounted (optional)
• Low inductance
• Compact size
• Easy to mount due to TO220-package
Technical Specifications
Resistance Value:
 Row E12
Tolerance:
 ±5%
Power Rating
Without Heatsink (25°C):
 2,25W
With Heatsink1) (25°C):
 50W
Operating Voltage, Max.:
 300V
Dielectric Strength:
 2000Vrms
Temperature Coefficient
�0,046W:
 ±300ppm/°C
�0,1W:
 ±250ppm/°C
�0,5W:
 ±150ppm/°C
Thermal Resistance:
 2,6K/W
Temperature Range:
 -55...+155°C
Climatic Category:
 55/155/156
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 (155°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: 13W
1) P = DT / [RTH(j-c) + RTH (c-a)]
2) DT = 155°C - 30°C = 125 K
3) [RTH(j-c) + RTH (c-a)] = DT / P = 125K / 13W = 9,6K/W4) RTH (c-a) = 9,6K/W - 2,6K/W = 7K/W
Manufacturer
Vishay/Sfernice
http://www.vishay.com
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