Part Number Search

Cross Reference Search

About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

Keyword Search

Parametric Search

Stock Check & Purchase

Select Product Categories

Select Application

Find everything you need for your next product design. Simply select an application and click through to the block diagram to discover our semiconductor solutions.

New Products / News

Innovation Centre

At the Toshiba Innovation Centre we constantly strive to inspire you with our technologies and solutions. Discover how to place us at the heart of your innovations.

Chapter V : Optical Semiconductors : How to Use a Photocoupler Check

Step 4. Check each constant.
Consider whether there is sufficient margin for operating temperature, speed, lifetime design, tolerance of resistor, etc.

How to Use a Photocoupler Check

Temperature range ⇒ VF, CTR, allowable current, etc.

Load resistance ⇒ switching speed, influence of dark current, etc.

Allowable current
Allowable current
CTR-Ta
CTR-Ta
Dark current
Dark current
Switching time -RL
Switching time -RL

Confirmation of lifetime of the set

The optical output of the input LED of photocoupler decreases with the passage of time.

It is necessary to confirm that the characteristics are satisfied, for which purpose this deterioration during the lifetime target of the set must be included.

The aging variation of the optical coupler can be calculated from input current (IF) and ambient temperature.

Confirmation of lifetime of the set

Chapter V : Optical Semiconductors

Related information

A new window will open