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  2. Komponenter
  3. Modstande
  4. Effekt 30W
  5. LTO30FE004,7-1

Resistor TO220 30W 1% 4,7R

Varenummer:101-535
Varekode:LTO30FE004,7-1
Vægt:1.1g
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Internet-pris
Inkl. moms
Kr. 66,17
v/10Kr. 55,44
v/25Kr. 51,14

LTO30FE004,7-1 Resistor TO220 30W 1% 4,7RLTO30FE004,7-1 Resistor TO220 30W 1% 4,7R DimensionsLTO30FE004,7-1 Resistor TO220 30W 1% 4,7R 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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