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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)
- 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)：4µs, 5µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.1V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：300mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SOIC (0.173", 4.40mm Width)
- Supplier Device Package：4-SOP
- Grade：-
- Qualification：-
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Overview
The PS2861B-1Y-F3-M-A is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It features an NPN phototransistor output and is housed in a compact SSOP-4 surface-mount package. The device provides high isolation with a rated insulation voltage of 3750 Vrms, suitable for noise-immune signal transmission. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 5 mA, and a forward voltage of 1.1 V. The unit supports a wide operating temperature range from -55°C to +110°C and has a power dissipation rating of 180 mW.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
- Features a fast switching response with specified rise and fall times for reliable digital signal transmission.
- Designed for robust operation across extended industrial ambient temperature ranges.
Applications
- Industrial control systems requiring galvanic isolation
- Power supply feedback loops
- Communication interface isolation
Procurement Notes
Verify the component status carefully before procurement as this specific part number may be classified as Not Recommended for New Designs (NRND) or Obsolete by the manufacturer. Confirm availability through authorized distributors and ensure that the SSOP-4 footprint matches the target PCB design. Cross-reference datasheet revisions to guarantee parameter consistency with existing system requirements.
Selection Notes
Select this component when a cost-effective, single-channel isolation solution is required for low-to-medium speed applications. Ensure the design accommodates the NPN open-collector output characteristics and the 3750 Vrms isolation barrier. Verify that the thermal management strategy supports the 180 mW power dissipation limit within the intended operating environment.
Part Context
This device belongs to the PS2861B series of high-isolation photocouplers from Renesas Electronics. The series is engineered for general-purpose isolation tasks where reliability and compact packaging are prioritized. The specific suffix indicates the tape-and-reel packaging format and pin configuration compatible with standard surface-mount assembly processes.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND/Obsolete status, direct replacements should be evaluated based on pin compatibility, isolation voltage ratings, and package dimensions rather than exact functional equivalence.
