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EL817(S)(B)(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)：130% @ 5mA
- Current Transfer Ratio (Max)：260% @ 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(S)(B)(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor, housed in a surface-mount 4-pin package. The device provides a maximum isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to 110°C. Key electrical parameters include a maximum collector-emitter breakdown voltage of 35V, a maximum forward current of 60mA, and a typical rise/fall time of 4µs/3µs. The component is RoHS compliant and UL recognized.
Feature Summary
- High isolation voltage capability between input and output circuits
- Compact surface-mount packaging for automated assembly
- RoHS compliant construction with lead-free terminals
Applications
- Signal isolation in industrial control systems
- Switching power supply feedback loops
- Microcontroller interface circuits requiring galvanic isolation
Procurement Notes
Verify the specific suffix configuration against the manufacturer's datasheet to ensure compatibility with surface-mount requirements. Confirm that the ordering code matches the required tape and reel type for automated placement processes. Check for any recent product lifecycle changes or obsolescence notices from Everlight Electronics before finalizing procurement plans.
Selection Notes
Select this component when a low-profile surface-mount solution is required for signal isolation. Ensure the design accommodates the specified 5000 Vrms isolation rating and the operating temperature range. Verify that the phototransistor output characteristics meet the load requirements of the target circuit application.
Part Context
This part belongs to the EL817 series of photocouplers, which are widely used for electrical isolation. The series includes various package options such as DIP and SMD types. The EL817(S)(B)(TA) specifically denotes the surface-mount variant with defined lead configurations suitable for modern PCB assembly techniques.
Replacement Considerations
Equivalent parts may include other single-channel transistor output optocouplers with similar isolation ratings and SMD packages. Verify pinout compatibility and electrical specifications before substitution.
