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STK401-090 Datasheet(PDF) 7 Page - Sanyo Semicon Device |
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STK401-090 Datasheet(HTML) 7 Page - Sanyo Semicon Device |
7 / 9 page The STK401-020 has four 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: From expression (1)' θc-a <(125–50)/15.7 <4.78 From expression (2)' θc-a <(150–50)/15.7–2.1/4 <5.84 To satisfy both, 4.78°C/W is the required radiator thermal resistance. Figure 2 illustrates Pd - PO when the VCC of STK401-020 is ±16V and RL is functioning at 3Ω. Pd = 17.6W (1/10 PO max = during 1.5W) From expression (1)' θc-a <(125–50)/17.6 <4.26 From expression (2)' θc-a <(150-50)/17.6–2.1/4 <5.16 To satisfy both, 4.26°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. 4341-7/9 STK401-020 |
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Descripción similar - STK401-090 |
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