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  2. Komponenter
  3. Modstande
  4. Effekt 50W
  5. RCH50E470

Resistor 50W 5% 470R

Varenummer:101-578
Varekode:RCH50E470
Vægt:9.2g
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Internet-pris
Inkl. moms
Kr. 89,38
v/10Kr. 77,84
v/25Kr. 66,31
v/100Kr. 62,47

RCH50E470 Resistor 50W 5% 470RRCH50E470 Resistor 50W 5% 470R DimensionsRCH50E470 Resistor 50W 5% 470R DeratingRCH50E470 Resistor 50W 5% 470R DeratingRCH50E470 Resistor 50W 5% 470R Dimensions
Produkt: Modstand
Modstand: 470Ω
Tolerance: ±5%
Effekt, max.: 50W
Gruppe: C1494
VISHAY Power Thick Film Resistors
Series: RCH50
Power: 50W
Tolerance: 5%
Features
• 50W at 25°C heatsink mounted (optional)
• Compact size
• Easy mounting
• High insulation: 106MW
Technical Specifications
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:
 0,8°C/W
Temperature Range:
 -55...+125°C
Climatic Category:
 55/125/56
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 (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
Terms of Delivery
Minimum order quantity: 1 PKU = 2 pieces
Manufacturer
Vishay/Sfernice
http://www.vishay.com
Produktfiler
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