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EL817(S1)(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)：80% @ 5mA
- Current Transfer Ratio (Max)：160% @ 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(S1)(A)(TB) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with an NPN phototransistor in a compact surface-mount package. The device provides high electrical isolation between input and output circuits, rated at 5000 Vrms. Key electrical specifications include a collector-emitter breakdown voltage of 35V, a maximum forward current of 60mA, and a collector current capacity of 50mA. The unit operates within a temperature range of -55°C to +110°C.
Feature Summary
- Provides galvanic isolation via optical coupling between input LED and output phototransistor
- Features high insulation voltage capability for safe signal transmission across potential differences
- Designed for surface mounting with specific lead configurations for PCB integration
Applications
- Signal isolation in industrial control systems
- Power supply feedback loops
- Communication equipment interface circuits
Procurement Notes
Verify the specific suffix codes against official Everlight documentation to confirm pinout, lead form, and tape/reel specifications. Ensure compliance requirements such as RoHS status match project needs. Cross-reference datasheet revisions to confirm parameter stability before finalizing component selection for production.
Selection Notes
Select this component when surface-mount isolation is required for low-to-medium speed digital signals. Consider the CTR range and switching times relative to the target circuit speed. Verify that the 50mA collector current limit meets the load requirements. Check thermal management needs given the operating temperature range.
Part Context
This part belongs to the EL817 series of photocouplers from Everlight. The series includes various packages such as DIP and SMD types. The S1 designation typically indicates a specific surface-mount footprint variant. The TB suffix often denotes tape and reel packaging for automated assembly processes.
Replacement Considerations
Check for direct equivalents like the EL817S1(A)(TU)-G or other EL817 SMD variants from Everlight. Verify pin compatibility and electrical parameters before substituting.
