Understanding Current Transfer Ratio(CTR) Of Optocouplers

CTR is an important parameter of optocouplers and is reflected in the suffix of their part numbers.

For example, GR is the CTR rank name of TLP291(GR-TP,SE(T.

The CTR represented by different rank names can vary.

It is important to note that the CTR is typically measured under specific operating conditions, such as specific input current and temperature.

Therefore, when selecting and using optocouplers, one should consider the CTR and other relevant parameters based on the application requirements to ensure that the optocoupler device can meet the system's needs.

Below is a comparison table of CTR rank for TOSHIBA and AVAGO as examples.

TOSHIBA：                                

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