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Name: EL817(S)(TA)
Brand: Everlight Electronics Co Ltd
SKU: EL817(S)(TA)
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)(TA)

Part No.:: EL817(S)(TA)

Manufacturer:: Everlight Electronics Co Ltd

Package:: 4-SMD, Gull Wing

Datasheet:: EL817(S)(TA).pdf

Description:: OPTOISOLTR 5KV TRANSISTOR 4-SMD

In Stock:: 3580

Quantity:: Add To Cart

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EL817(S)(TA) 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):
4µs, 3µs
InputType:
DC
OutputType:
Transistor
Voltage-Output(Max):
35V
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)(TA) this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including EL817(S)(TA) 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)(TA) 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)(TA) information

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EL817(S)(TA) Typical application Circuitry

EL817(S)(TA)

The EL817(S)(TA) optocoupler, sometimes referred to as an optical isolator, is made to use light to transfer electrical signals between two isolated circuits. 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 voltage spikes, eliminate ground loops, or for safety reasons.

Application Scenarios

EL817(S)(TA) is suitable for a wide range of applications, such as signal isolation in communication systems, interfacing microcontrollers with high-voltage circuits, power supply regulation, and digital logic circuits where electrical isolation is necessary. A specific application could be its use in an isolated SPI communication interface, where it provides electrical isolation between a microcontroller and an SPI device to prevent noise and ground loop issues.

Parameter Features

The EL817(S)(TA) features high electrical isolation (typically several thousand 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 SPI Communication Interface

In an isolated SPI communication interface, EL817(S)(TA) can be used to isolate the SPI signals (MISO, MOSI, SCK) between a microcontroller and an SPI device.

- Power Supply to LED: Connect the anode of the internal LED to the SPI signal line (MOSI or SCK) from the microcontroller through a current-limiting resistor, and connect the cathode to the ground of the microcontroller side. This configuration allows the microcontroller to control the LED, which in turn modulates the phototransistor.

- Phototransistor Output for SPI Signals: Connect the collector of the phototransistor to the corresponding SPI signal line (MISO, MOSI, SCK) on the SPI device side through a pull-up resistor, and connect the emitter to the ground of the SPI device side. The phototransistor conducts based on the LED's light, recreating the SPI signals on the isolated side.

- Current-Limiting Resistor: To protect the LED from harm, connect a resistor in series with the LED and set the resistor's current limit to safe values as indicated in the datasheet.

- Pull-Up Resistors: Utilize pull-up resistors on the SPI signal lines on the isolated side to ensure the lines are at a defined high level when the phototransistor is not conducting.

- Repeat for Each SPI Signal: Implement a separate EL817(S)(TA) for each SPI signal line that needs isolation (typically MOSI, MISO, and SCK).

When designing circuits with EL817(S)(TA), it's crucial to consider the timing requirements of the SPI 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 speed of the SPI bus and the capacitance of the lines to maintain proper SPI 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)(TA) FAQ

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

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)(TA) we delivered, we will accept the replacement or return of the EL817(S)(TA) 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)(TA).

(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