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STK401-040 Scheda tecnica(PDF) 7 Page - Sanyo Semicon Device |
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STK401-040 Scheda tecnica(HTML) 7 Page - Sanyo Semicon Device |
7 / 9 page The STK401-050 has four power transistors, so the thermal resistance per transistor θj-c is 1.8°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)/27.7 <2.70 From expression (2)' θc-a <(150–50)/27.7–1.8/4 <3.16 To satisfy both, 2.70°C/W is the required radiator thermal resistance. Figure 2 illustrates Pd - PO when the VCC of STK401-050 is ±22V and RL is functioning at 3Ω. Pd = 33.5W (1/10 PO max = during 3W) From expression (1)' θc-a <(125–50)/33.5 <2.23 From expression (2)' θc-a <(150-50)/33.5–1.8/4 <2.53 To satisfy both, 2.23°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. 4343-7/9 STK401-050 |
Codice articolo simile - STK401-040 |
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Descrizione simile - STK401-040 |
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