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EL817(S1)(B)(TD)
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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)：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)(B)(TD) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It integrates an infrared emitting diode and an NPN phototransistor within a compact surface-mount package. The device provides high isolation voltage between input and output circuits, ensuring reliable signal transmission across different potentials. Key electrical parameters include a collector-emitter breakdown voltage of 35 V, a maximum forward current of 50 mA, and a typical current transfer ratio of 80% at 5 mA. The unit operates within a temperature range of -55 °C to +110 °C and complies with RoHS standards.
Feature Summary
- High isolation voltage capability between input and output sections
- Compact surface-mount package design for space-constrained applications
- RoHS compliant construction without halogens
- Single-channel configuration with NPN phototransistor output
Applications
- Signal transmission between circuits of different potentials
- Programmable controllers and industrial automation systems
- Home appliances such as fan heaters and measuring instruments
- Telecommunication equipment interface circuits
Procurement Notes
Verify the specific suffix codes against official Everlight documentation to confirm exact packaging type and lead configuration. Ensure compliance requirements match project specifications. Confirm availability status through authorized channels as distribution statuses vary. Cross-reference part numbers with manufacturer databases to avoid substitution errors during procurement processes.
Selection Notes
Select this component when surface-mount assembly is required for optoisolation tasks. Consider the 35 V collector-emitter voltage rating for low-voltage switching applications. Evaluate the thermal operating range for environments exceeding standard commercial temperatures. Verify pin compatibility with existing PCB footprints before finalizing the design integration.
Part Context
This model belongs to the EL817 series of photocouplers, which are widely used for electrical isolation in electronic circuits. The series offers various package options including dual-in-line and surface-mount configurations. Everlight manufactures these devices to meet international safety approvals for industrial and consumer electronics applications.
Replacement Considerations
Public confirmed substitute part numbers include EL817S1(B)(TA)-FVG and EL817(S1)(B)(TA)-FVG. Verify pinout and electrical characteristics before substituting.
