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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
- Series：NEPOC
- Mfr：Renesas Electronics Corporation
- Package：Strip
- 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-SMD
- Grade：-
- Qualification：-
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Overview
The PS2705A-1-V-A is a single-channel AC input transistor output optocoupler manufactured by Renesas Electronics. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a maximum collector current of 50 mA. The device provides 3750 Vrms isolation voltage and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum forward current of 30 mA, a typical forward voltage of 1.4 V, and a maximum collector-emitter saturation voltage of 300 mV. Power dissipation is rated at 150 mW.
Feature Summary
- AC input capability allows direct connection to alternating current signals without additional rectification circuitry.
- High isolation voltage ensures robust electrical separation between input and output circuits for safety.
- Wide operating temperature range supports reliable performance in demanding industrial environments.
Applications
- Solid-state relay control circuits
- Industrial automation signal isolation
- Power supply feedback loops
Procurement Notes
Verify component authenticity through authorized distributors due to limited availability status. Confirm RoHS compliance and package integrity upon receipt. Check for obsolescence notices as the part may be restricted from new designs. Ensure storage conditions meet moisture sensitivity level requirements before assembly.
Selection Notes
Select this component when AC input detection is required alongside high-voltage isolation. Compare CTR specifications against load requirements. Verify that the 70 V collector-emitter voltage exceeds the peak output voltage in the application. Consider thermal management for power dissipation limits in enclosed spaces.
Part Context
This device belongs to the PS2705A series of optocouplers designed for general-purpose isolation applications. It integrates an infrared emitting diode with an NPN phototransistor in a compact surface-mount package. The series is engineered for reliability in industrial and consumer electronics where galvanic isolation is critical.
Replacement Considerations
PS2705A-1-V-F3-A is a documented alternative variant within the same family offering similar electrical characteristics with different packaging options.
