PC357 Sharp 1 Channel Transistor Output Optocoupler SMD Package
The PC357 is a compact, high-reliability single-channel optocoupler featuring an infrared LED and a phototransistor output in an SMD package.
It provides galvanic isolation between input and output, making it ideal for signal transfer between circuits with different voltage levels or noisy environments.
Its small size, stable performance, and low driving current make it suitable for consumer electronics, industrial control, and microcontroller interfaces.
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Features:-
- 4-pin Mini-flat package
- Double transfer mold package (Ideal for Flow Soldering)
- High collector-emitter voltage (VCEO : 80V)
- Current transfer ratio (CTR) : MIN. 50% at IF=5mA, VCE=5V
- Several CTR ranks available
- High isolation voltage between input and output (Viso(rms) : 3.75kV) 7. RoHS directive compliant
Specification:-
| Symbol | Parameter | Rating | Units |
| IF | Forward current | 50 | mA |
| IFM | Input Peak forward current | 1 | A |
| VR | Reverse voltage | 6 | V |
| P | Power dissipation | 70 | mW |
| VCEO | Collector-emitter voltage | 80 | V |
| VECO | Emitter-collector voltage | 6 | V |
| IC | Collector current | 50 | mA |
| PC | Collector power dissipation | 150 | mW |
| Ptot | Total power dissipation | 170 | mW |
| Topr | Operating temperature | ?30 to +100 | °C |
| Tstg | Storage temperature | ?40 to +125 | °C |
| Viso (rms) | Isolation voltage | 3.75 | kV |
| Tsol | Soldering temperature | 260 | °C |
Applications
- Signal isolation between low-voltage and high-voltage circuits
- Microcontroller input protection
- Switching power supplies
- Relay and transistor driver circuits
- AC mains sensing and isolation
- Industrial control systems
- Consumer electronics
- Noise suppression in digital interfaces
*Product image for illustration purposes only, actual product may vary.






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