EL357N Optocoupler 4-Pin SMD SOP Phototransistor Isolator
Prices updated: 13 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 UGE | EL357N OptoCoupler Optoisolator SMD 4pin IC | 15 EGP | View in store |
Price history
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Lowest price recorded: 15 EGP
About this product
EL357N is a 4-pin SMD optocoupler that pairs an infrared LED with a phototransistor, providing electrical isolation between the input and output circuits. It is used for feedback in switch-mode power supplies, programmable controllers and signal transmission in telecom equipment.
Specifications
- Package
- 4-pin SOP, 2.0 mm profile
- Current transfer ratio (CTR)
- 50% to 600% at IF = 5 mA, VCE = 5 V
- Isolation voltage
- 3750 Vrms
- Halogen-free
- Yes
- RoHS compliant
- Yes
Frequently asked questions
What is the price of EL357N Optocoupler 4-Pin SMD SOP Phototransistor Isolator in Egypt?
EL357N Optocoupler 4-Pin SMD SOP Phototransistor Isolator currently costs 15 EGP in Egypt.
Where can I buy EL357N Optocoupler 4-Pin SMD SOP Phototransistor Isolator in Egypt?
EL357N Optocoupler 4-Pin SMD SOP Phototransistor Isolator is available from UGE. Compare the offers above to find the best price.
What is the pinout of the EL357N?
In the standard SOP-4 pinout, pin 1 is the LED anode, pin 2 is the LED cathode, pin 3 is the phototransistor emitter and pin 4 is the collector. Confirm this against the datasheet before laying out the PCB.
How do I design the input and output sides?
Drive the LED side through a series resistor from the control circuit, and connect the phototransistor side with a pull-up resistor to produce the output signal. Because the CTR ranges from 50% to 600%, design the bias for the lower end of that range so the circuit works with every unit.
