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EL817(S1)(B)(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)：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)(TA) 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 of 5000 Vrms between input and output circuits. It features a minimum current transfer ratio (CTR) of 50% at IF=5mA and VCE=5V. The component operates within a temperature range of -55°C to +110°C and includes a tape and reel packaging option for automated assembly.
Feature Summary
- High isolation voltage capability between input and output
- Compact surface-mount lead form design
- RoHS compliant construction with halogen-free materials
Applications
- Industrial control systems requiring galvanic isolation
- Signal transmission across isolated DC-DC converter boundaries
- Microcontroller interface circuits for noise immunity
Procurement Notes
Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required lead forms and packaging types. Confirm that the tape and reel specifications match your automated placement equipment requirements. Check for any regional distribution restrictions or end-of-life status updates prior to finalizing procurement plans.
Selection Notes
Select this component when a low-profile surface-mount solution is required for space-constrained designs. Ensure the circuit design accommodates the specified CTR range and operating temperature limits. Verify that the isolation voltage rating meets the safety standards applicable to the target application environment.
Part Context
This part belongs to the EL817 series, which offers various lead form options including through-hole DIP and surface-mount configurations. The S1 designation indicates a specific surface-mount lead geometry optimized for reflow soldering processes. The TA suffix denotes the tape and reel packaging format suitable for high-volume manufacturing.
Replacement Considerations
Direct substitutes include other EL817 variants with compatible pinouts such as EL817S1(B). Cross-reference electrical parameters like CTR and isolation voltage when considering alternative manufacturers' equivalents.
