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In my current circuit, I have the FS8205 MOSFET in combination with a DW01A for lithium battery protection, but the MOSFET is out of stock. I found another MOSFET labeled "FS8205A". Can I just switch them out?

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Description of FS8205 (current one)

  • 20V 6A 28mΩ@4.5V,4A 1W 1.2V@250uA 2 N-Channel SOT-23-6
  • Datasheet

Description of the new FS8205A

  • 20V 6A 19.5mΩ@4.5V,3A 1.5W 700mV@250uA 58pF@10V 2 N-Channel 466pF@10V 5.7nC@10V -55℃~+150℃@(Tj) SOT-23-6
  • Datasheet

I see that they have different resistance values but I don't know if that matters.

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Yes the A suffix is “equivalent or better” with a lower resistance and thus would operate cooler. All other critical parameters are insensitive to the function as an almost ideal diode switch.

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