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EL817(S1)(C)(TB)
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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)(TB) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor within a compact surface-mount package. The device provides high electrical isolation with a rated insulation voltage of 5000 Vrms. Key electrical specifications include a collector-emitter breakdown voltage of 35V, a maximum collector current of 50mA, and a typical forward voltage of 1.4V. The unit operates reliably across a temperature range of -55°C to +110°C.
Feature Summary
- Provides galvanic isolation between input and output circuits using optical transmission.
- Features a compact surface-mount design suitable for automated assembly processes.
- Ensures signal integrity through stable current transfer characteristics.
Applications
- Industrial control systems requiring circuit isolation
- Power supply feedback loops
- Signal isolation in communication equipment
Procurement Notes
Verify the specific suffix designation against the manufacturer's official documentation to confirm exact packaging type and compliance status. Confirm availability as distribution channels may report limited stock or discontinuation statuses that differ from official manufacturing records. Ensure the component matches the required surface-mount footprint and pin configuration for the target application board.
Selection Notes
Select this component when a robust, low-cost solution for DC signal isolation is required. The NPN phototransistor output is suitable for standard logic interfacing. Consider the thermal operating range and isolation voltage requirements relative to the system's safety standards. Verify that the surface-mount package dimensions fit the available PCB real estate constraints.
Part Context
This part belongs to the EL817 series of optocouplers, which are widely used for general-purpose isolation. The series typically offers various package options including DIP and SMD configurations. The EL817 family is recognized for its reliability in protecting sensitive control electronics from high-voltage transients in industrial environments.
Replacement Considerations
Cross-reference with other EL817 variants such as EL817(S1)(C)(TU)-V or EL817S1(C)(TU)-F for compatible surface-mount alternatives. Verify pinout compatibility and electrical parameter equivalence before substitution.
