KPC817C PC817 1010 replacement TLP781 SFH617A-3 optocoupler DIP4

KPC817C optoisolator

• Collector-emitter voltage (Vceo): 80V
• Emitter-collector voltage (Veco): 6V
• Collector current (Ic): 50 mA
• Diode conduction current (If): 50 mA
• Diode reverse voltage (Vr): 6V
• Total loss power (Ptot): 200 mW
• Input-output isolation (VISO): 5000 Vrms
• Operating temperature: -50°C to +110°C
• Storage temperature: -55°C to +125°C
• Maximum soldering temperature: 260°C
• DIP4 housing

Electro-optical characteristics:

• Diode reverse current (IR): up to 10 µA at 4V
• Diode junction capacitance (Ct): 30-250 pF
• Collector dark current (ICEO): max. 100 nA at VCE = 20V
• Collector-emitter saturation voltage (VCE(sat)): 0.1-0.2V at IF = 20mA, IC = 1mA
• Rise/fall time (tr/tf): typically 4 µs / 3 µs
• Maximum switching frequency (fC): 80 kHz
• Isolation resistance (RISO): ≥ 5×10¹⁰ Ω (at 500V DC, 40-60% RH)

Current Transfer Ratio (CTR):

Range for KPC817C: 200-400% at IF = 5mA, VCE = 5V, Ta = 25°C
CTR determines how much percentage of the input current (LED) is transferred to the output load (transistor).

• Typical applications:
• Feedback circuits in power supplies
• Switch-mode converters
• Measurement and control systems
• Industrial automation
• Signal isolation in controllers and microcontrollers
• Domestic appliances (heaters, copiers, vending machines)