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Name: EL817(S)(TB)-G
Brand: Everlight Electronics Co Ltd
SKU: EL817(S)(TB)-G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Everlight Electronics Co Ltd EL817(S)(TB)-G

Part No.:: EL817(S)(TB)-G

Manufacturer:: Everlight Electronics Co Ltd

Package:: 4-SMD, Gull Wing

Datasheet:: EL817(S)(TB)-G.pdf

Description:: OPTOISOLTR 5KV TRANSISTOR 4-SMD

In Stock:: 3859

Quantity:: Add To Cart

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EL817(S)(TB)-G Specifications

Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Discontinued at Mosen
NumberofChannels:
1
Voltage-Isolation:
5000Vrms
CurrentTransferRatio(Min):
50% @ 5mA
CurrentTransferRatio(Max):
600% @ 5mA
TurnOn/TurnOffTime(Typ):
-
Rise/FallTime(Typ):
6µs, 8µs
InputType:
DC
OutputType:
Transistor
Voltage-Output(Max):
80V
Current-Output/Channel:
50mA
Voltage-Forward(Vf)(Typ):
1.2V
Current-DCForward(If)(Max):
60 mA
VceSaturation(Max):
200mV
OperatingTemperature:
-55°C ~ 110°C
MountingType:
Surface Mount

EL817(S)(TB)-G this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including EL817(S)(TB)-G price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for EL817(S)(TB)-G to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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EL817(S)(TB)-G information

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EL817(S)(TB)-G Typical application Circuitry

EL817(S)(TB)-G

An optocoupler, also called an optical isolator, is a part that uses light to transfer electrical signals between two isolated circuits. The part number for this type of device is EL817(S)(TB)-G. It is made up of a phototransistor and an infrared LED that enable signal communication and electrical isolation. This device is widely used in applications requiring electrical isolation to protect sensitive electronics from high voltage spikes, eliminate ground loops, or for safety reasons.

Application Scenarios

EL817(S)(TB)-G is commonly employed in various fields such as industrial control systems, power supply circuits, consumer electronics, and communication systems. A specific application scenario could be its use in an isolated I2C communication interface, where it provides electrical isolation between a microcontroller and an I2C device to prevent noise and ground loop issues.

Parameter Features

The EL817(S)(TB)-G features include high electrical isolation (often thousands of volts), a Current Transfer Ratio (CTR) that indicates the efficiency of optical coupling, and compatibility with a wide range of input and output voltage levels.Its excellent reliability and low power consumption are designed in.

Circuit Connection Example: Isolated I2C Communication Interface

In an isolated I2C communication interface, EL817(S)(TB)-G can be used to isolate the SDA (Serial Data) and SCL (Serial Clock) lines between a microcontroller and an I2C device.

- Power Supply to LED: Connect the anode of the internal LED to one of the I2C lines (SDA or SCL) through a current-limiting resistor, and connect the cathode to the ground of the microcontroller side. This setup allows the LED to emit light corresponding to the I2C signals.

- Phototransistor Output for SDA Line: Connect the collector of the phototransistor to the isolated side's SDA line through a pull-up resistor, and connect the emitter to the ground of the isolated side. The phototransistor will conduct based on the LED's light, recreating the SDA signal on the isolated side.

- Phototransistor Output for SCL Line: Similarly, use another EL817(S)(TB)-G for the SCL line, connecting the collector to the SCL line through a pull-up resistor and the emitter to the ground on the isolated side.

- Current-Limiting Resistor: Choose a resistor value that limits the LED current to safe levels, typically based on the forward voltage and desired current through the LED specified in the datasheet.

- Pull-Up Resistors: Use pull-up resistors on both SDA and SCL lines on the isolated side to ensure the lines are at a defined high level when the phototransistor is not conducting.

When designing circuits with EL817(S)(TB)-G, it's crucial to consider the timing and speed of the I2C communication to ensure that the optocouplers can transmit signals without significant delay or distortion. To supply the LED with enough current without going over its maximum rating, the value of the current-limiting resistor needs to be determined. Similarly, the value of the pull-up resistors should be chosen based on the I2C bus speed and the capacitance of the lines to maintain proper I2C signal integrity. Additionally, the isolation voltage rating of the optocoupler should be higher than any potential voltage difference that could occur between the isolated circuits to ensure safe and reliable operation. Proper PCB layout practices should also be followed to maximize electrical isolation and minimize noise coupling.

EL817(S)(TB)-G FAQ

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6. What is the process for return or replacement of EL817(S)(TB)-G?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the EL817(S)(TB)-G we delivered, we will accept the replacement or return of the EL817(S)(TB)-G only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of EL817(S)(TB)-G.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations