PC357N

Transistor, Photovoltaic Output Optoisolators Overview

The PC357N is a transistor output optocoupler from the Sharp Microelectronics PC357NJ0000F series. It integrates an infrared emitting diode (IRED) optically coupled to a phototransistor within a 4-pin Mini-flat package. The device provides an input-output isolation voltage of 3.75 kVrms. Key electrical parameters include a collector-emitter breakdown voltage of 80 V and a typical rise/fall time of 18 μs. The current transfer ratio (CTR) ranges from 50% to 600% at an input current of 5 mA, with a maximum forward voltage of 1.4 V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed switching capability with typical rise and fall times of 18 microseconds
• Robust insulation performance rated at 3.75 kVrms between input and output circuits
• Wide current transfer ratio range accommodating various gain requirements
• Compact surface-mount packaging suitable for space-constrained designs

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal transmission in industrial control systems
• Isolation interfaces in measurement and testing equipment
• Signal coupling in consumer electronic devices requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific CTR ranking suffix required for your application, as the PC357N series includes variants such as 1J, 2J, 3J, and 4J corresponding to different gain bands. Confirm that the Mini-flat package dimensions align with your PCB footprint constraints. Ensure compliance with RoHS directives and UL 1577 recognition standards if mandated by your system safety requirements.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is needed alongside moderate voltage handling capabilities. The 80 V collector-emitter voltage supports standard logic level interfacing. Consider the 18 μs switching speed for applications exceeding typical low-frequency optocoupler limits. Verify thermal management needs given the operating temperature range extends up to 100°C.

Transistor, Photovoltaic Output Optoisolators Part Context

The PC357N belongs to the PC357NJ0000F series of general-purpose photocouplers manufactured by Sharp Microelectronics. These devices are designed for surface mounting using the Mini-flat package format. The series is recognized under UL 1577 standards for double protection isolation, ensuring reliability in safety-critical signal transmission paths across various electronic industries.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes within the same family include PC357N1J000F, PC357N2J000F, and PC357N4J000F, which share identical pinouts and mechanical dimensions but differ in Current Transfer Ratio rankings. Cross-brand replacements require verification of isolation voltage, CTR, and package compatibility.