Contact us

Es wird ein neues Fenster geöffnet Es wird ein neues Fenster geöffnet

How are the current transfer ratio (CTR), trigger LED current, and threshold input current measured?

Refer to Toshiba Application Note “Glossary of Photocoupler and Photorelay Terms”, section 2. Measurement procedure for current transfer ratio, IC/IF(CTR) - Transistor output, section 3. Measurement procedure for threshold input current, IFHL(IFLH) - IC output, and section 4. Measurement procedure for trigger LED current, IFT.
(https://toshiba.semicon-storage.com/ap-en/design-support/document/application-note.html)
 

Example: Current transfer ratio (CTR) measurement circuit
(Excerpts from Application Note "Glossary of Photocoupler and Photorelay Terms",
section 2. Measurement procedure for current transfer ratio,IC/IF(CTR)- Transistor output)
 

Measurement procedure for current transfer ratio, IC/IF (CTR) - Transistor output

To Top
·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.