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EL817(S1)(D)(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)：300% @ 5mA
- Current Transfer Ratio (Max)：600% @ 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)(D)(TD) is a single-element transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with a phototransistor detector in a compact surface-mount package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 35 V, a maximum forward current of 60 mA, and a typical current transfer ratio ranging from 50% to 600% at a forward current of 5 mA. It operates within a temperature range of -55°C to +110°C.
Feature Summary
- High isolation voltage capability for safe signal transmission across isolated domains
- Compact small outline surface-mount package design for space-constrained applications
- Wide operating temperature range suitable for demanding industrial environments
Applications
- Noise reduction applications requiring reliable transistor output
- Industrial control systems utilizing DC input signals
- General purpose signal isolation in electronic circuits
Procurement Notes
Verify the specific suffix codes against the manufacturer's official datasheet to confirm pinout configuration and packaging type. Ensure compliance requirements such as RoHS status match project specifications. Cross-reference approval numbers like UL or VDE if regulatory certification is mandatory for the end application.
Selection Notes
Select this component when a surface-mount transistor output optocoupler is required for galvanic isolation. Consider the 5000 Vrms isolation rating and the 50-600% CTR range for signal integrity. Verify that the 4-SMD footprint fits the PCB layout constraints and that the operating temperature range meets environmental demands.
Part Context
This part belongs to the EL817 series of optocouplers produced by Everlight Electronics. The series typically includes various package options such as DIP and SMD configurations. The EL817 family is widely recognized for providing cost-effective isolation solutions with standardized pinouts and established reliability records in consumer and industrial electronics.
Replacement Considerations
Check for direct substitutes within the EL817 series offering identical SMD footprints. Verify compatibility with existing circuit designs regarding current transfer ratio and isolation voltage ratings before substitution.
