32

CTR vs. IF Characteristics

As shown in Figure 8, the CTR of a single-transistor output optocoupler (such as the PS2501 and PS2505 optocouplers) is at

Forward Current IF (mA)

CONCLUSION

Demand for optocouplers featuring higher insulation and noise elimination is steadily increasing. At the same time, various

problems (change of characteristics by ambient temperature and time elapse) will occur in their circuit design. We hope this

manual will be helpful in solving such problems.

(PS2502, PS2506)

7000

6000

5000

4000

3000

2000

1000

0

0.05 0.1

0.5

1

5

10

50

Standard characteristics