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  2. Komponenter
  3. Modstande
  4. Induktionssvage
  5. RTO20FE047

Resistor TO220 20W 5% 47R

Varenummer:84-244
Varekode:RTO20FE047
Vægt:3.3g
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Internet-pris
Inkl. moms
Kr. 72,50
v/10Kr. 68,75
v/25Kr. 62,50
v/100Kr. 50,00

RTO20FE047 Resistor TO220 20W 5% 47RRTO20FE047 Resistor TO220 20W 5% 47RRTO20FE047 Resistor TO220 20W 5% 47R DimensionsRTO20FE047 Resistor TO220 20W 5% 47R DeratingRTO20FE047 Resistor TO220 20W 5% 47R DimensionsRTO20FE047 Resistor TO220 20W 5% 47R Derating
Modstand: 47Ω
Tolerance: ±5%
Effekt, max.: 20W
Komponenthus: TO220
Gruppe: C1481
VISHAY Thick Film Resistors
Series: RTO20F
Power: 20W
Tolerance: 5%
Housing: TO220
Features
• 20W at 25°C and heatsink mounted (optional)
• Low inductance
• Compact size
• Easy to mount due to TO220-package
Technical Specifications
Tolerance:
 ±5%
Power Rating
Without Heatsink (25°C):
 2W
With Heatsink1) (25°C):
 20W
Operating Voltage, Max.:
 250W
Dielectric Strength:
 2000Vrms
Temperature Coefficient
£0,1W:
 ±250ppm/°C
£0,5W:
 ±150ppm/°C
Thermal Resistance:
 6,5°C/W
Temperature Range:
 -55...+155°C
Climatic Category:
 55/155/56
Derating:
 See Curve
1) For calculation of heatsink please see values below Note.
Note
• You will find suitable heatsinks at product group G9511.
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 25°C, Power Rating: 10W
1) P = DT / [RTH(j-c) + RTH (c-a)]
2) DT = 155°C - 25°C = 130K
3) [RTH(j-c) + RTH (c-a)] = DT / P = 130K / 10W = 13K/W4) RTH (c-a) = 13K/W - 6,5K/W = 6,5K/W
Terms of Delivery
Minimum order quantity: 1 PKU = 2 pieces
Form of delivery: Original PKU, 50 pieces in a tube
Manufacturer
Vishay/Sfernice
http://www.vishay.com
Produktfiler
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