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EL817(S1)(B)(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)：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)(TB) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an NPN phototransistor output and supports surface mount installation in a 4-SMD package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a maximum collector-emitter breakdown voltage of 35 V, a maximum forward current of 60 mA, and a maximum collector current of 50 mA. The unit operates within a temperature range of -55°C to +110°C.
Feature Summary
- High isolation voltage capability between input and output channels
- Compact surface mount package design for automated assembly
- RoHS compliant construction with lead-free terminals
Applications
- General purpose signal isolation in electronic circuits
- Interface applications between microcontrollers and power stages
- Switching power supply feedback loop isolation
Procurement Notes
Verify the specific suffix configuration against the official Everlight datasheet to ensure compatibility with required mounting styles and tape specifications. Confirm that the selected variant matches the intended surface mount footprint dimensions and reel packaging requirements for production integration. Cross-reference approval certifications such as UL or VDE if regulatory compliance is mandatory for the end application.
Selection Notes
Select this component when surface mount technology is required for compact circuit board layouts. Ensure the design accommodates the specified thermal operating range and isolation voltage ratings. Consider the current transfer ratio variations and saturation characteristics when designing the output stage interface. Verify that the package type aligns with the available PCB footprint and soldering process capabilities.
Part Context
This part belongs to the EL817 series of photocouplers from Everlight Electronics. The series includes various configurations such as DIP through-hole packages and different SMD variants like S1 types. These devices are widely used in industrial and consumer electronics for providing electrical isolation while transmitting signals across potential barriers.
Replacement Considerations
Equivalent parts include PC817BS, HT-817S1-BTP1-F, AT817B-FeL-SE, and LTV-817S-B. Verify pinout compatibility and parameter tolerances before substitution.
