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EL357ND-G
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：300% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：3µs, 4µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP (2.54mm)
- Grade：-
- Qualification：-
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Overview
The EL357ND-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor detector within a compact four-pin SOP-4 surface-mount package. The device provides electrical isolation with a rated isolation voltage of 3750 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80V, a forward current of 50mA, and a power dissipation of 200mW. The unit operates across a temperature range of -55°C to +110°C.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using infrared light transmission.
- Features a compact four-pin surface-mount package designed for dense PCB layouts.
- Utilizes an NPN phototransistor output stage for digital signal switching applications.
Applications
- Industrial control systems requiring signal isolation
- Power supply feedback loops
- Communication equipment interface circuits
Procurement Notes
Verify the specific suffix designation against the manufacturer's official documentation to confirm pinout configuration and performance characteristics. Ensure the component meets required safety certifications for the target application environment. Cross-reference the datasheet revision date to validate parameter accuracy before integration into design specifications.
Selection Notes
Select this component when a single-channel isolation solution with a standard NPN output is required. Consider the 3750 Vrms isolation rating for safety compliance in mains-connected designs. Evaluate the thermal management requirements given the 200mW power dissipation limit and the specified operating temperature range for the intended enclosure conditions.
Part Context
This part belongs to the EL357N-G series of transistor output optocouplers from Everlight. The series is characterized by its small form factor and robust isolation capabilities, serving as a common component for general-purpose signal transfer in electronic circuits where galvanic isolation is necessary.
Replacement Considerations
Consult official substitution lists for verified equivalents. Generic replacements may differ in pinout or isolation ratings; verify compatibility with the original schematic requirements before implementation.
