• 20W at 25°C and heatsink mounted (optional)
• Low inductance
• Compact size
• Easy to mount due to TO220-package
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Resistance Value:
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Row E12
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Tolerance:
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±5%
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Power Rating
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Without Heatsink (25°C):
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2W
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With Heatsink1) (25°C):
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20W
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Operating Voltage, Max.:
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250W
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Dielectric Strength:
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2000Vrms
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Temperature Coefficient
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£0,046W:
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±300ppm/°C
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£0,1W:
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±250ppm/°C
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£0,5W:
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±150ppm/°C
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Thermal Resistance:
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6,5K/W
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Temperature Range:
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-55...+155°C
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Climatic Category:
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55/155/156
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Derating:
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See Curve
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1) For calculation of heatsink please see values below Note.
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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
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