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EL817(S)(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(S)(A)(TB) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an NPN phototransistor output and provides high isolation voltage of 5000 Vrms between input and output circuits. The device is designed for surface mount applications, utilizing a 4-SMD package configuration. Key electrical parameters include a maximum collector-emitter breakdown voltage of 35 V and a continuous collector current rating of 50 mA. The component 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
- Surface mount compatible 4-SMD package design
- NPN phototransistor output configuration
Applications
- General purpose signal isolation in electronic circuits
- Interface between microcontrollers and high voltage loads
- Switching power supply feedback loops
Procurement Notes
Verify the specific suffix codes against the manufacturer's official documentation to confirm exact pinout, lead form, and tape/reel specifications. Ensure that the requested variant matches the required Current Transfer Ratio (CTR) binning and packaging type for your assembly process. Cross-reference the part number with the latest datasheet to confirm availability status and compliance certifications such as UL or VDE recognition.
Selection Notes
Select this component when surface mount technology is required for optocoupler applications. Consider the 5000 Vrms isolation rating for safety-critical interfaces. Evaluate the CTR requirements against the specific application load to ensure adequate switching performance. Confirm that the 4-SMD footprint aligns with the PCB layout constraints and soldering capabilities available in the manufacturing environment.
Part Context
This part belongs to the EL817 series of photocouplers from Everlight Electronics. The series includes various configurations such as DIP through-hole and SMD surface mount options. Variants are distinguished by suffixes indicating lead spacing, bend types, and packaging formats like tape and reel. The EL817 series is widely recognized for its reliability in industrial and consumer electronics applications requiring galvanic isolation.
Replacement Considerations
Direct substitutes may include other EL817 variants from Everlight with matching SMD packages and CTR ranges. Generic equivalents from other manufacturers offering similar 5000 Vrms isolation and NPN output characteristics can be considered if pin compatibility is verified.
