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EL817(S1)(C)(TU)
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：200% @ 5mA
- Current Transfer Ratio (Max)：400% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：35V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：60 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-SMD
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Overview
The EL817(S1)(C)(TU) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode coupled to an NPN phototransistor in a surface-mount SOP-4 package. Key electrical parameters include a collector-emitter voltage of 35V, a maximum forward current of 60mA, and a collector current of 50mA. The device provides high isolation with a rated voltage of 5000Vrms and operates within a temperature range of -55°C to +110°C.
Feature Summary
- Provides electrical isolation between input and output circuits via optical transmission
- Features a compact surface-mount SOP-4 package for automated assembly
- Offers high isolation voltage rating for safety barrier applications
Applications
- Industrial control systems for signal isolation
- Power supply feedback loops
- Communication equipment interface isolation
Procurement Notes
Verify the specific suffix configuration against the manufacturer's datasheet to ensure compatibility with required packaging and compliance standards. Confirm availability status as distribution channels may report limited stock or discontinuation notices for certain variants. Cross-reference pinout assignments with target PCB footprint specifications prior to integration.
Selection Notes
Select this component when a low-cost, general-purpose transistor output isolator is required for DC signal transmission. Ensure the application voltage does not exceed the 35V collector-emitter limit. Consider the CTR range and switching speed requirements relative to the system timing constraints before finalizing the design.
Part Context
This part belongs to the EL817 series of optocouplers, widely used for basic galvanic isolation. The S1 designation typically indicates a specific creepage distance or package variant compared to standard through-hole versions. It serves as a direct replacement for legacy DIP-4 optocouplers in modern surface-mount designs.
Replacement Considerations
Direct pin-compatible replacements include other manufacturers' EL817-series SMD variants such as PC817 or FOC-817SC, provided their electrical ratings match the design requirements.
