Varenummer: | 101-577 |
Varekode: | RCH50E220 |
Vægt: | 8.9g |
Produkt: | Modstand |
Modstand: | 220Ω |
Tolerance: | ±5% |
Effekt, max.: | 50W |
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 |