High Reliability Photocoupler
z Features
1. Current transfer ratio
( CTR：Min. 60% at IF=2mA VCE=5V )
2. High isolation voltage between input and output
( Viso：5000Vrms )
3. Compact long creepage distance type package.
4. Pb free and RoHS compliant.
5. Agency Approvals
• UL UL1577 / CUL C22.2 No.1 & NTC No.5, File No. E169586
• VDE EN60747, File No.101347
• FIMKO EN60065, File No.FI23149
• FIMKO EN60950, File No.FI24584
• SEMKO EN60065, File No.1016484
• SEMKO EN60950, File No.1016433
z Application：
1. Registers, copies, automatic vending machines.
2. System appliances, measuring instruments.
3. Computer terminals, programmable controllers.
4. Communications, telephone, etc.
5. Electric home appliances, such as oil fan heaters, Microwave
Oven, Washer, Refrigerator, Air conditioner, etc.
6. Medical instruments, physical and chemical equipment.
7. Signal transmission between circuits of different potentials
and impedances.
8. Facsimile equipment, Audio, Video.
9. Switching power supply, Laser beam printer.

Classification table of current
transfer ratio is shown below.
Model No. CTR ( % )
K20103A 60 ~ 160
K20103B 130 ~ 260
K20103C 200 ~ 400
K20103D 300 ~ 600
K20103E 60 ~ 600