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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：NEPOC
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：300% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：5µs, 7µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：30mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：30 mA
- Vce Saturation (Max)：300mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP
- Grade：-
- Qualification：-
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Overview
The PS2705A-1-F3-A is a single-channel optically coupled isolator manufactured by Renesas Electronics Corporation. It integrates an AlGaAs light-emitting diode and an NPN silicon phototransistor within a shielded SOP-4 package to block ambient light. The device supports AC and DC input signals, providing high isolation voltage of 3750Vrms. Key electrical parameters include a maximum collector-emitter voltage of 40V, a typical current transfer ratio of 100%, and fast switching times with rise and fall times of 3µs and 5µs respectively. It operates within a temperature range of -55°C to 100°C.
Feature Summary
- AC/DC Input Response
- High Isolation Voltage
- Ambient Light Shielding
Applications
- Digital logic transmission and conversion
- Power supply control and switching circuits
- Electrical insulation between circuits and systems
- Impedance transformation in isolated interfaces
Procurement Notes
Verify the specific suffix F3-A against official Renesas documentation to confirm pinout compatibility and lead finish specifications. Confirm RoHS3 compliance status for your region. Check for Not For New Design (NRND) status if applicable to new projects. Ensure the SOP-4 package dimensions match your PCB footprint requirements before finalizing procurement.
Selection Notes
Select this component when high isolation voltage and AC input capability are required in a compact surface-mount package. The 100% typical CTR ensures reliable signal transfer at low drive currents. Consider the 40V output voltage limit and 80mA collector current capacity for load matching. The wide operating temperature range suits industrial environments requiring robust thermal performance.
Part Context
This part belongs to the PS2705 series of high-isolation voltage photocouplers from Renesas. The series is designed for applications demanding safety certification and noise immunity. The SOP-4 package allows for high-density mounting on printed circuit boards. The device represents a standard solution for galvanic isolation in modern electronic designs.
Replacement Considerations
Publicly confirmed substitutes include PS2705-1-F3-A and PS2705-1-F3-L-A. Verify pinout and electrical characteristics against the original datasheet before substitution. Other potential replacements may exist but require individual verification of isolation voltage and package type.
FAQ
Does the PS2705A-1-F3-A support AC input signals?
Yes, the device features an AC input response capability, allowing it to interface directly with AC sources without additional rectification components.
What is the isolation voltage rating of this component?
The component provides a high isolation voltage of 3750Vrms between the input LED and the output phototransistor.
How does the package design affect performance?
The SOP-4 package includes a shield effect that effectively cuts off ambient light, ensuring stable operation in environments with external light interference.
