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EL814S(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)：20% @ 1mA
- Current Transfer Ratio (Max)：300% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：7µs, 11µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：-
- 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
- Grade：-
- Qualification：-
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Overview
The EL814S(TB) is a single-channel AC input transistor output optocoupler manufactured by Everlight Electronics. It features two infrared emitting diodes connected in inverse parallel, optically coupled to an NPN phototransistor detector. The device provides high isolation voltage of 5000 Vrms and supports a wide operating temperature range from -55°C to 110°C. Key electrical parameters include a maximum collector-emitter voltage of 80V, a typical forward voltage of 1.2V, and a maximum DC forward current of 60mA. The component is available in a surface mount package.
Feature Summary
- AC input response capability due to dual inverse-parallel infrared LEDs
- High isolation voltage between input and output terminals
- Wide operating temperature range suitable for harsh environments
- Compact surface mount packaging for automated assembly
Applications
- Digital logic transmission and signal conversion
- Power supply control and switching circuits
- Electrical insulation isolation between circuits and systems
- Impedance transformation in electronic interfaces
Procurement Notes
Verify the specific suffix (TB) indicates the correct surface mount reel or cut tape packaging configuration required for your assembly line. Confirm RoHS compliance status and UL/VDE recognition numbers match your regulatory requirements. Ensure the manufacturer part number matches the exact datasheet version to avoid pinout discrepancies.
Selection Notes
Select this component when AC signal detection is required on the input side without external rectification. The dual-diode input structure simplifies circuit design for AC applications. Consider the 80V collector-emitter voltage rating for low-voltage switching tasks. Verify that the surface mount footprint aligns with your PCB layout constraints.
Part Context
The EL814 series includes both DIP and surface mount variants. The EL814S(TB) specifically denotes the surface mount version. Other variants like EL814S1(A)(TU) may offer different binning or packaging options. The series is designed for general-purpose isolation where AC input compatibility is beneficial.
Replacement Considerations
Check for direct substitutes such as LTV-814S series components which share similar pinouts and electrical characteristics. Verify that any replacement maintains the 5000 Vrms isolation rating and AC input capability. Ensure the replacement package matches the SMD4 footprint specifications.
