型號查詢

交叉搜尋

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.

關鍵字搜尋

參數搜尋

線上庫存查詢跟購買

Select Product Categories

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

開啟新視窗