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EL357N(TB)-G
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tape & Reel (TR)
- 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(TB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor within a compact 4-pin SOP surface-mount package with a 2mm profile. The device provides high electrical isolation between input and output circuits, rated at 3750 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80V, a peak forward current of 50mA, and a typical saturation voltage of 200mV. The unit operates reliably across a wide temperature range from -55°C to 110°C.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
- Features a compact 4-pin SOP surface-mount package designed for dense PCB layouts.
- Ensures stable signal transmission through a wide operating temperature range suitable for industrial environments.
Applications
- Industrial control systems requiring signal isolation
- Power supply equipment feedback loops
- Communication electronics interface isolation
Procurement Notes
Verify the specific suffix (TB) against the manufacturer's latest datasheet to confirm pinout configuration and packaging details. Ensure compliance with RoHS directives and check for halogen-free status if required by project specifications. Confirm availability status as distribution channels may vary.
Selection Notes
Select this component when a low-profile SMD optocoupler with high isolation voltage is needed. The 3750 Vrms rating supports safety standards for mains-connected applications. Consider the CTR range and switching speed requirements relative to the target circuit design.
Part Context
This part belongs to the EL357N-G series of phototransistor optocouplers. The series is characterized by its robust isolation capabilities and compact form factor, widely used in general-purpose isolation applications where space constraints and electrical safety are critical design factors.
Replacement Considerations
Cross-reference with other EL357N variants such as EL357N(C)(TA)-VG or EL357N(B)(TA)-G for potential substitutes. Verify that alternative parts match the SOP-4 package dimensions and electrical ratings before implementation.
