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EL851S1(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)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 5µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：350V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
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Overview
The EL851S1(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features a gallium arsenide infrared emitting diode coupled to an NPN silicon phototransistor in a surface-mount package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a minimum current transfer ratio of 50% at a forward current of 5 mA and collector-emitter voltage of 5 V. The component supports a maximum forward current of 50 mA and operates within a temperature range of -40°C to +100°C.
Feature Summary
- High isolation voltage capability between input and output sides
- Compact surface-mount design for automated assembly
- Compatible with standard SMD reflow soldering processes
Applications
- Industrial control systems requiring signal isolation
- Communication equipment interface circuits
- Microprocessor input/output isolation
Procurement Notes
Verify the specific suffix TA indicates the tape and reel packaging configuration as documented in official datasheets. Confirm RoHS compliance status and relevant safety approvals such as UL or VDE through manufacturer documentation before procurement. Ensure the selected variant matches the required lead spacing and mounting orientation for the target PCB layout.
Selection Notes
Select this component when surface-mount technology is required for optocoupler applications. Consider the 5000 Vrms isolation rating for noise immunity in industrial environments. Verify that the 50% minimum CTR meets the drive requirements of the downstream circuitry. Check thermal management needs against the specified operating temperature range.
Part Context
This part belongs to the EL851 series of single-channel optocouplers from Everlight. The series includes various package options such as DIP and SMD configurations. The TA suffix specifically denotes the tape and reel packaging format suitable for high-volume surface-mount production lines.
Replacement Considerations
Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence before replacing the component in existing designs.
