| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | PT78HT253 | 5.25Vout 2Amp Wide-Input Positive Step-Down ISR | 125K |
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| 2 | PT78HT253H | 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR | 221K |
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| 3 | PT78HT253S | 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR | 221K |
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| 4 | PT78HT253V | 2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR | 221K |
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