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EL817(S1)(D)(TU)-G
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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)：300% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- 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)：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)(D)(TU)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor detector within a compact surface-mount package. The device provides electrical isolation between input and output circuits with a rated isolation voltage of 5000 Vrms. Key electrical specifications include a collector-emitter breakdown voltage of 35V, a maximum forward current of 60mA, and a typical forward voltage of 1.2V. The unit supports a continuous collector current of 50mA and operates reliably across a temperature range of -55°C to +110°C.
Feature Summary
- Provides high-voltage electrical isolation via optical coupling between input and output circuits
- Integrates an infrared LED emitter with an NPN phototransistor for signal transmission
- Designed for surface-mount assembly in compact electronic layouts
Applications
- Digital logic signal transmission and level shifting
- Power supply control and switching circuits
- Electrical insulation between distinct circuit systems
- Impedance transformation in isolated interfaces
Procurement Notes
Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout configuration and packaging type. Ensure the component meets required safety certifications such as UL or VDE if applicable to the end application. Confirm that the surface-mount footprint matches the PCB design constraints before finalizing procurement orders.
Selection Notes
Select this component when a single-channel isolation barrier is required for low-to-medium speed digital signals. Consider the 5000 Vrms isolation rating for applications involving potential high-voltage differentials. Evaluate the operating temperature range to ensure compatibility with the environmental conditions of the target system. Verify that the surface-mount package dimensions fit within the available board space constraints.
Part Context
This part belongs to the EL817 series of transistor output optocouplers produced by Everlight Electronics. The series is widely recognized for providing reliable galvanic isolation in various industrial and consumer electronics applications. The specific model variant denotes a surface-mount configuration designed for automated assembly processes.
Replacement Considerations
Consult official substitution lists from Everlight Electronics for verified compatible alternatives. Cross-reference pinouts and electrical parameters with other single-channel SMD optocouplers from different manufacturers only if datasheets confirm identical functional characteristics.
