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EL814S(A)(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)：50% @ 1mA
- Current Transfer Ratio (Max)：150% @ 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(A)(TB) is a surface-mount AC input transistor output optocoupler from 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 between input and output. Key electrical parameters include a collector-emitter breakdown voltage (VCEO) of 80 V, a maximum forward current (IF) of 60 mA, and a typical forward voltage (VF) of 1.2 V. The current transfer ratio (CTR) ranges from 50% to 150%. Operating temperature spans from -55°C to 110°C.
Feature Summary
- AC input response capability due to dual inverse-parallel infrared LEDs
- High isolation voltage between input and output circuits
- Compact surface-mount package design for automated assembly
Applications
- Solid-state relay driver circuits
- Microcontroller interface for AC mains monitoring
- Industrial control system signal isolation
Procurement Notes
Verify the specific suffix configuration against the manufacturer's datasheet to ensure correct packaging and compliance status. Confirm RoHS and lead-free attributes as required by project specifications. Cross-reference ordering codes with authorized distributors to avoid counterfeit components. Ensure the surface-mount footprint matches the PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when AC line sensing or isolation is required without external rectification circuitry. The dual-diode input structure simplifies design for alternating current applications. Verify that the 80 V collector-emitter voltage rating exceeds the peak load voltage in the target application. Consider the surface-mount form factor for space-constrained designs requiring high isolation performance.
Part Context
The EL814 series includes both through-hole DIP and surface-mount variants. The EL814S(A)(TB) specifically denotes the surface-mount version with TB packaging suffix. This series is designed for general-purpose isolation where AC input compatibility is beneficial. It shares core optical characteristics with other members of the EL814 family but differs in physical package and mounting method.
Replacement Considerations
Equivalent alternatives may include LTV-814S or PC814S variants if pinout and CTR specifications align. Verify isolation voltage ratings and package dimensions before substitution. Ensure the replacement supports AC input operation if that feature is critical to the original design intent.
