Unless otherwise specified on the datasheet, please use a multilayer capacitor for the output capacitor.
If you use only an aluminum electrolytic capacitor or conductive polymer capacitor as the output capacitor, the power supply module may abnormally oscillate. That may then result in issues such as output voltage abnormalities and abnormal heat generation.
If you will use an aluminum electrolytic capacitor or a conductive polymer capacitor, please use a multilayer capacitor in parallel.
You can operate the OKL series with only an aluminum electrolytic capacitor or conductive polymer capacitor.