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EL817(D)
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-DIP
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tube
- 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)：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：Through Hole
- Package / Case：4-DIP (0.300", 7.62mm)
- Supplier Device Package：4-DIP
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Overview
The EL817(D) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with an NPN phototransistor detector in a DIP-4 through-hole package. Key electrical parameters include a maximum collector-emitter voltage of 35 V, a maximum collector current of 50 mA, and a forward voltage of 1.2 V at 20 mA. The device offers a high isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to +110°C. Current transfer ratio specifications range from 300% to 600%, with rise and fall times of 18 µs.
Feature Summary
- Provides galvanic isolation between input and output circuits using optical coupling technology.
- Features a compact four-pin dual in-line package designed for standard through-hole mounting.
- Ensures signal integrity across isolated domains with high insulation voltage capabilities.
Applications
- Power supply feedback loop isolation
- Industrial control system signal transmission
- Home appliance circuit interfacing
Procurement Notes
Verify the specific suffix designation against the manufacturer's latest datasheet to confirm pinout compatibility and packaging type. Ensure that the procurement source provides valid RoHS compliance documentation and UL/VDE certification records. Cross-reference the part number with official Everlight distribution channels to avoid counterfeit components and confirm active status.
Selection Notes
Select this component when a cost-effective, general-purpose optocoupler is required for low-speed digital or analog signal isolation. The DIP-4 form factor suits legacy board designs and manual assembly processes. Consider the CTR range and isolation voltage requirements to ensure adequate noise immunity for the specific application environment.
Part Context
The EL817 series belongs to Everlight's lineup of linear optocouplers widely used in power electronics. This specific variant utilizes a standard DIP-4 housing, distinguishing it from surface-mount alternatives like the EL817(S). The series is recognized for its reliability in maintaining electrical separation while transmitting control signals across different potential levels.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic equivalents such as PC817 only if datasheet parameters match exactly.
