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EL357NA-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)：80% @ 5mA
- Current Transfer Ratio (Max)：160% @ 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 EL357NA-G is a single-channel optocoupler featuring an infrared LED coupled to an NPN phototransistor detector. It utilizes a 4-pin SOP surface-mount package with a 2.54mm pitch. Key electrical parameters include a maximum collector-emitter voltage of 80V, a continuous forward current of 50mA, and a peak reverse voltage of 6V. The device offers a high isolation voltage of 3750Vrms and operates within a temperature range of -55°C to +110°C. Power dissipation is rated at 200mW.
Feature Summary
- Provides electrical isolation between input and output circuits using infrared light transmission.
- Features a compact four-lead surface mount package suitable for high-density PCB layouts.
- Delivers high isolation voltage capability to protect low-voltage control circuits from high-voltage loads.
Applications
- Signal isolation in industrial control systems
- Power supply feedback loops
- Communication interface isolation
Procurement Notes
Verify the specific suffix 'A' against the manufacturer's latest datasheet to confirm binning or CTR specifications. Ensure the ordering code matches the required tape-and-reel or tube packaging format. Confirm RoHS compliance status for the specific production batch before finalizing procurement orders.
Selection Notes
Select this component when a standard NPN phototransistor output is required for DC signal isolation. Consider the 80V load voltage limit and 50mA collector current capacity for circuit design. Verify that the SOP-4 footprint aligns with the target PCB design constraints and thermal management requirements.
Part Context
This part belongs to the Everlight EL357N-G series of transistor-output optocouplers. The series is designed for general-purpose isolation applications requiring reliable performance in compact form factors. The 'A' suffix typically denotes specific Current Transfer Ratio (CTR) bins or manufacturing variations within the broader product family.
Replacement Considerations
Cross-reference with EL357N(C)(TA)-G or EL357N(B)(TA)-G for pin-compatible alternatives. Verify that substitute parts match the 3750Vrms isolation rating and SOP-4 package dimensions. Ensure the replacement maintains equivalent switching speed and CTR characteristics for the specific application.
