55. Optocoupler Basics

Question.2

Two optocouplers have similar markings:

Digi-key Part No: APC-817A1-SL
Digi-key Part No: APC-817C1-SL

What do the suffix letters (A, B, C, etc.) usually indicate?

Need Help? Refer to the Quick Guide below

Package color
Manufacturing year
CTR (Current Transfer Ratio) range
Input voltage rating

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