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EL817(S1)(B)(TD)-VG
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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)：6µs, 8µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- 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)(B)(TD)-VG is a surface-mount transistor output optocoupler from Everlight. It integrates an infrared emitting diode and an NPN phototransistor in a compact SMD package. The device provides high isolation voltage between input and output circuits, ensuring signal integrity across different potentials. Key electrical parameters include a collector-emitter breakdown voltage of 35V and a maximum forward current of 50mA. The typical rise time is 6µs, with a fall time of 5µs. It supports a wide operating temperature range from -55°C to +110°C.
Feature Summary
- High isolation voltage capability for safe circuit separation
- Compact surface-mount design suitable for automated assembly
- Wide operating temperature range for diverse environmental conditions
Applications
- Signal transmission between circuits of different potentials
- Interface between microprocessors and power control circuits
- Isolation in industrial communication systems
Procurement Notes
Verify the specific suffix VG against official Everlight documentation to confirm tape-and-reel packaging and lead-free compliance. Ensure the TD variant matches required footprint dimensions. Cross-reference RoHS status with current regulatory requirements before finalizing procurement specifications.
Selection Notes
Select this component when surface-mount technology is required for space-constrained designs. Verify that the 50mA output current capacity meets load requirements. Confirm that the 35V collector-emitter voltage rating exceeds the maximum expected load voltage in the application circuit.
Part Context
This part belongs to the EL817 series of transistor output optocouplers. The series is widely used for general-purpose isolation applications. The S1 designation typically indicates a specific lead form or spacing variation within the standard DIP/SMD family, while the TD suffix denotes the surface-mount package type.
Replacement Considerations
Direct replacements must match the SOP-4 or similar small-outline package. Verify pinout compatibility (Anode, Cathode, Emitter, Collector). Check that substitute parts offer equivalent isolation voltage and current transfer ratio characteristics.
