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EL357NF-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)：150% @ 5mA
- Current Transfer Ratio (Max)：300% @ 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 EL357NF-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with an NPN phototransistor detector within a compact SOP-4 surface-mount package. The device provides electrical isolation with a rated insulation voltage of 3750 Vrms. Key electrical parameters include a collector-emitter saturation voltage of 200 mV, a maximum collector current of 50 mA, and a peak reverse voltage of 6 V. The unit supports a power dissipation of 200 mW and operates reliably across a temperature range of -55°C to +100°C.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
- Features a compact four-pin surface-mount design suitable for dense PCB layouts.
- Delivers stable signal transmission with defined rise and fall times for digital switching applications.
Applications
- Signal transmission between circuits operating at different potentials and impedances
- DC-DC converter control loops requiring galvanic isolation
- Industrial control systems needing reliable component-level isolation
Procurement Notes
Verify the specific suffix designation against the manufacturer's official datasheet to confirm exact performance characteristics, as variations exist within the EL357N series. Ensure the selected variant matches the required current transfer ratio and thermal specifications for the target application environment before finalizing procurement.
Selection Notes
Select this component when a standard NPN phototransistor output is required for general-purpose isolation. Consider the 3750 Vrms insulation rating for safety compliance in mains-connected or high-voltage interfaces. Evaluate the 50 mA collector current limit to ensure compatibility with downstream load requirements without exceeding absolute maximum ratings.
Part Context
This part belongs to the EL357N-G family of transistor output optocouplers designed for general-purpose isolation tasks. The series utilizes a standardized SOP-4 footprint, facilitating automated assembly and space-constrained designs. It serves as a fundamental building block for creating isolated feedback paths and signal barriers in electronic systems.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Generic replacements may differ in isolation voltage or speed; verify technical equivalence before substitution.
FAQ
What is the typical switching speed of the EL357NF-G?
The device exhibits a typical rise time of 3 microseconds and a fall time of 4 microseconds.
Does the EL357NF-G support lead-free manufacturing standards?
Yes, the component is compliant with RoHS standards and is lead-free.
