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EL817 4 PIN Opto-coupler PHOTOTRANSISTOR PHOTOCOUPLER
€0.50
Tax included
PC817/EL817 4-pin DIP general purpose photocoupler. This optocoupler consists of a GaAs infrared LED on the input side and an NPN phototransistor on the output side, providing galvanic isolation between circuits.
The EL817 (also referenced as PC817) is a general-purpose phototransistor optocoupler designed for galvanic isolation between electronic circuits. It integrates a Gallium Arsenide (GaAs) infrared LED on the input side and an NPN phototransistor on the output side.
This component is ideal for protecting microcontrollers (Arduino, Raspberry Pi, ESP32) or control circuits from high voltages while ensuring reliable signal transmission. It is commonly used in switching power supplies, industrial I/O interfaces, and isolated communication systems.
Specifications
| Specification | Value |
|---|---|
| Reference | EL817 / PC817 |
| Output Type | NPN Phototransistor |
| Number of Channels | 1 |
| Isolation Voltage | 5 000 Vrms |
| Output Voltage (Vceo) | 35 V |
| Max Output Current | 50 mA |
| Forward LED Current (If) | 60 mA |
| Current Transfer Ratio (CTR min.) | 50% @ 5 mA |
| Current Transfer Ratio (CTR max.) | 600% @ 5 mA |
| Saturation Voltage Vce | 200 mV max. |
| Mounting Type | Through-Hole |
| Package | 4-Pin DIP (7.62 mm / 0.300") |
ECJTAOPC817
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PC817/EL817 4-pin DIP general purpose photocoupler. This optocoupler consists of a GaAs infrared LED on the input side and an NPN phototransistor on the output side, providing galvanic isolation between circuits.