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EL354(A)
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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% @ 1mA
- Current Transfer Ratio (Max)：150% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 100°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 EL354(A) is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared LED and a phototransistor in a 4-pin SOP package to provide electrical isolation between input and output circuits. Key electrical parameters include a minimum current transfer ratio of 50% at 1mA forward current, with a maximum of 150%. The device supports an isolation voltage of 3750Vrms and can withstand a maximum output voltage of 80V. The typical forward voltage is 1.2V, with a maximum DC forward current rating of 50mA. The operating temperature range extends from -55°C to 100°C.
Feature Summary
- Provides high-voltage electrical isolation for signal transmission between separate circuits
- Integrates infrared LED and phototransistor for efficient electro-optical conversion
- Suitable for digital logic transmission and impedance transformation applications
Applications
- Digital logic signal transmission and level shifting
- Power supply control and switching circuits
- Electrical insulation isolation between system components
Procurement Notes
Verify the specific suffix (e.g., A, TB, V) against the official datasheet to ensure correct pinout and electrical characteristics. Confirm availability status as some variants may be obsolete or have limited stock. Check RoHS compliance requirements if applicable to your manufacturing process. Ensure the SOP-4 footprint matches your PCB design constraints.
Selection Notes
Select this component when high isolation voltage is required for low-speed digital signals. Consider the 50-150% CTR range for circuit gain calculations. Verify that the 80V output voltage rating meets the load requirements. Ensure the operating temperature range covers the environmental conditions of the final application.
Part Context
The EL354 series belongs to Everlight's line of phototransistor output optocouplers designed for general-purpose isolation. These devices are commonly used in industrial and consumer electronics where galvanic isolation is necessary to protect sensitive control circuits from high-voltage noise or faults.
Replacement Considerations
Check for direct substitutes such as the EL354N-G or other single-channel phototransistor optocouplers with similar CTR and isolation ratings. Ensure pin compatibility and package dimensions match before substitution.
