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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：NEPOC
- Mfr：CEL
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：150% @ 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
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Overview
The PS2705A-1-F3-M-A is a single-channel optocoupler featuring an AC-input GaAs LED and an NPN phototransistor output. It provides high isolation voltage of 3750 Vrms with a maximum collector-emitter breakdown voltage of 70 V. The device supports a maximum forward current of 30 mA and offers a typical current transfer ratio of 150% at 5 mA input. Operating temperatures range from -55°C to +100°C, housed in a lead-free SOP-4 package.
Feature Summary
- AC input capability for direct connection to AC signals without external rectification
- High isolation voltage rating for safe signal transmission across potential barriers
- NPN phototransistor output designed for digital switching applications
Applications
- Industrial control systems requiring isolated signal interfaces
- Solid-state relay driver circuits
- Microcontroller interface isolation for AC sensing
Procurement Notes
Verify the specific suffix M-A against manufacturer documentation to confirm pinout and packaging details. Ensure compliance with RoHS directives as indicated by the lead-free designation. Cross-reference the Renesas or CEL datasheet for exact mechanical dimensions and thermal characteristics before finalizing procurement specifications.
Selection Notes
Select this component when AC input detection is required without additional rectifier components. The 70 V collector-emitter voltage rating suits low-voltage logic interfacing. Verify that the 30 mA maximum forward current aligns with the driving circuit capabilities. Confirm the SOP-4 package fits the available PCB footprint constraints.
Part Context
This part belongs to the PS2705A series of high-isolation voltage optocouplers originally developed by NEC and now manufactured by Renesas Electronics. The series is characterized by its ability to handle AC inputs directly, simplifying circuit design for isolation applications. The SOP-4 package provides a compact solution for surface-mount assembly.
Replacement Considerations
Direct substitutes include PS2705A-1-F3-L-A and PS2705A-1-F3-MA. Verify pin compatibility and electrical parameters such as CTR and isolation voltage before substitution.
