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Resistor TO220 30W 1% 4,7R
Varenummer:101-535
Varekode:LTO30FE004,7-1
Vægt:1.1g
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Inkl. moms:
Kr. 53,68
v/10Kr. 42,94
v/25Kr. 38,65
v/100Kr. 32,20
v/1000Kr. 27,91
LTO30FE004,7-1LTO30FE004,7-1 DimensionsLTO30FE004,7-1 Derating
Produkt: Modstand
Modstand: 4,7Ω
Tolerance: ±1%
Effekt, max.: 30W
Komponenthus: TO220
Features
• 30W at 25°C and heatsink mounted (optional)
• Low inductance
• Compact size
• Easy to mount due to TO220-package
• direct ceramic mounting design (no metal tab)
Technical Specifications
Resistance Value:
Row E12
Tolerance:
±1%
Power Rating
Without Heatsink (25°C):
2,25W
With Heatsink1) (25°C):
30W
Operating Voltage, Max.:
250V
Dielectric Strength:
1500Vrms
Temperature Coefficient
³0,1W:
±250ppm/°C
³0,5W:
±150ppm/°C
Thermal Resistance:
4,2K/W
Temperature Range:
-55...+150°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: 10W
1) P = DT / [RTH(j-c) + RTH (c-a)]
2) DT = 155°C - 30°C = 125K
3) [RTH(j-c) + RTH (c-a)] = DT / P = 125K / 10W = 12,5K/W4) RTH (c-a) = 12,5K/W - 4,2K/W = 8,3K/W
Manufacturer
Vishay/Sfernice
http://www.vishay.com
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