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EL357N-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)：50% @ 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 EL357N-G is a single-channel transistor output optocoupler from Everlight Electronics. It integrates an infrared emitting diode with a phototransistor detector in a compact 4-pin SOP-4 surface-mount package. Key electrical parameters include a maximum collector-emitter voltage of 80V, a continuous forward current of 50mA, and a high isolation voltage of 3750 Vrms between input and output circuits. The device exhibits a typical rise time of 3µs and fall time of 4µs, with a current transfer ratio ranging from 50% to 600% at a forward current of 5mA and collector-emitter voltage of 5V. Operating temperature spans -55°C to +110°C.
Feature Summary
- Provides electrical isolation between input and output circuits using optical coupling technology.
- Features a compact 4-pin SOP-4 surface-mount package designed for high-density PCB layouts.
- Delivers high current transfer ratio for efficient signal transmission across isolated boundaries.
- Complies with international safety standards including UL, VDE, CSA, and Nordic approvals.
Applications
- DC-DC converter feedback loops
- Signal transmission between circuits of different potentials
- Impedance matching between logic circuits
Procurement Notes
Verify the specific suffix (e.g., TA, VG) against the required packaging format such as tape and reel or cut tape. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by variant. Ensure the selected part number matches the exact isolation voltage and package dimensions required for the design.
Selection Notes
Select this component when high isolation voltage and compact size are critical. The wide CTR range allows flexibility in circuit gain requirements. Verify that the 80V output voltage rating meets the load requirements. Consider the operating temperature range if deployed in extreme environments.
Part Context
The EL357N-G belongs to the EL357N-G series of transistor output optocouplers. This series is engineered for general-purpose isolation applications requiring reliable performance in industrial and consumer electronics. The family emphasizes safety certifications and environmental compliance, supporting global deployment.
Replacement Considerations
EL357N(C)(TA)-G and EL357N(D)(TA)-G are related variants within the same series. Verify pinout compatibility and specific suffix requirements before substitution. Cross-referencing with other manufacturers requires checking isolation voltage and CTR specifications.
