PS2501-1, -4, PS2501L-1, -4

R08DS0202EJ0100 Rev.1.00

Page 11 of 12

Dec 25, 2020

2. Cautions regarding noise

Be aware that when voltage is applied suddenly between the photocoupler’s input and output or between

collector-emitters at startup, the output transistor may enter the on state, even if the voltage is within the

absolute maximum ratings.

3. Measurement conditions of current transfer ratios (CTR), which differ according to photocoupler

Check the setting values before use, since the forward current conditions at CTR measurement differ

according to product.

When using products other than at the specified forward current, the characteristics curves may differ

from the standard curves due to CTR value variations or the like. This tendency may sometimes be

obvious, especially below IF = 1 mA.

Therefore, check the characteristics under the actual operating conditions and thoroughly take variations

or the like into consideration before use.

USAGE CAUTIONS

1. Protect against static electricity when handling.

2. Avoid storage at a high temperature and high humidity.

3. Avoid cleaning with Freon based or halogen-based (chlorinated etc.) solvents.

4. Do not use fixing agents or coatings containing halogen-based substances.