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STK401-080 Fiches technique(PDF) 8 Page - Sanyo Semicon Device |
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STK401-080 Fiches technique(HTML) 8 Page - Sanyo Semicon Device |
8 / 10 page The STK400-020 has six power transistors, so the thermal resistance per transistor θj-c is 2.1°C / W. With an assured ambient temperature Ta of 50°C, the required radiator thermal resistance θc-a would be as follows: From expression (1)' θc-a < (125–50)/23.5 < 3.19 From expression (2)' θc-a < (150–50)/23.5 – 2.1/6 < 5.84 To satisfy both, 3.19°C/W is the required radiator thermal resistance. Figure 2 illustrates Pd - PO when the VCC of STK400-020 is ±16 V and RL is functioning at 3 Ω. Pd = 26.5 W (1/10 PO max = during 1.5 W) From expression (1)' θc-a < (125–50) – 26.5 < 2.83 From expression (2)' θc-a < (150-50)/26.5 – 2.1/6 < 3.42 To satisfy both, 2.83°C / W is the required radiator thermal resistance. This design example is based on a fixed voltage supply, and will require verification within your specific set environment. No. 4830-8/10 STK400-020 |
Numéro de pièce similaire - STK401-080 |
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Description similaire - STK401-080 |
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