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EL817(S)(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)：50% @ 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(S)(TU)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and provides 5000 Vrms isolation voltage between input and output circuits. The device is designed for surface mount applications in a 4-SMD gull-wing package configuration. Key electrical characteristics include a maximum collector-emitter voltage of 35V and a continuous collector current of 50mA per channel. The internal LED operates with a typical forward voltage of 1.2V and supports a maximum forward current of 60mA. The unit functions within a temperature range of -55°C to 110°C.
Feature Summary
- Provides galvanic isolation via infrared LED and NPN phototransistor architecture
- Supports high voltage isolation up to 5000 Vrms for circuit protection
- Designed for surface mount integration using standard SMD packaging
Applications
- Signal isolation in industrial control systems
- Power supply feedback loops
- Microcontroller interface circuits
Procurement Notes
Verify the specific Current Transfer Ratio (CTR) bin designation required for the application, as suffixes indicate different gain ranges. Confirm that the 'TU' suffix corresponds to the correct reel or cut tape packaging format intended for the assembly line. Ensure the component meets all relevant safety certification requirements for the target market before finalizing procurement orders.
Selection Notes
Select this component when a single-channel isolation barrier is required with moderate speed capabilities. The NPN output type suits applications requiring active-low signaling or pull-up resistor configurations. Consider the thermal management requirements given the operating temperature range and power dissipation limits during high-duty cycle operations.
Part Context
This part belongs to the EL817 family of optocouplers, which are widely used for general-purpose isolation. The 'S' indicates the surface mount variant, while '(TU)' specifies the tape and reel packaging style. This series offers a cost-effective solution for basic digital signal isolation compared to higher-speed logic output alternatives.
Replacement Considerations
Direct replacements may include other EL817 variants from Everlight with matching CTR bins. Cross-brand equivalents such as PC817 or LTV-817 may fit mechanically but require verification of electrical parameters like CTR and isolation voltage.
