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 dual-in-line package.
4. Pb free and RoHS compliant.
5. Agency Approvals
• UL UL1577 / CUL C22.2 & NTC No.5, File No. E169586
• VDE EN60747, File 01347
• FIMKO EN60065, File No.FI23149
• FIMKO EN60950, File No.FI24584
• SEMKO EN60065, File 016484
• SEMKO EN60950, File 016433
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 ( % )
K20101A 60 ~ 160
K20101B 130 ~ 260
K20101C 200 ~ 400
K20101D 300 ~ 600
K20101E 60 ~ 600