... replace for PC817 ,P521 series JC817M ,JC817S ,JC817S1 CQC UL ,CSA approved High Density Mounting Type OPTOCOUPLER PC817 optical ... 4. Package type: dual-in-line package5. CQC approved6. UL approved7. CSA approved- Description 1. The JC817 series are optically ... in office machine, solid state relay, household use equipment, switching power supply2.It can replace H11C series, TLP541, LP741, TLP747 ...