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EL817(S1)(A)(TA)
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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)：80% @ 5mA
- Current Transfer Ratio (Max)：160% @ 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)(A)(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with an NPN phototransistor in a compact SMD package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 35V, maximum forward current of 60mA, and collector current of 50mA. The typical current transfer ratio ranges from 80% to 600% at a forward current of 5mA. Operating temperature spans from -55°C to +110°C.
Feature Summary
- Provides electrical isolation via optical coupling between input LED and output phototransistor
- Features high insulation voltage capability for safe circuit separation
- Available in surface-mount tape and reel packaging for automated assembly
- Complies with international safety standards including UL, VDE, and CSA approvals
Applications
- Signal isolation in industrial control systems
- Power supply feedback loops
- Communication equipment interface circuits
Procurement Notes
Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required isolation ratings and packaging types. Confirm RoHS compliance status and lead availability as distribution channels may vary. Cross-reference part numbers with official Everlight documentation to avoid substitution errors due to minor suffix differences affecting performance or physical dimensions.
Selection Notes
Select this component when surface-mount assembly is required for single-channel isolation applications. Ensure the 5000 Vrms isolation rating meets system safety requirements. Verify that the NPN phototransistor output type aligns with the receiving circuit design. Consider the operating temperature range for environmental suitability.
Part Context
This part belongs to the EL817 series of photocouplers produced by Everlight Electronics. The series offers various packaging options including DIP and SMD formats. The S1 suffix indicates a specific lead bend configuration suitable for surface mounting. The TA suffix denotes tape and reel packaging. The A suffix typically refers to current transfer ratio grouping.
Replacement Considerations
Direct replacements must match the 4-pin SMD footprint and electrical characteristics. Verify equivalent isolation voltage and CTR ranges. Check for compatible safety certifications if used in regulated environments.
