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

Part No.:: EL817(S)(D)(TA)-G

Manufacturer:: Everlight Electronics Co Ltd

Package:: 4-SMD, Gull Wing

Datasheet:: EL817(S)(D)(TA)-G.pdf

Description:: OPTOISOLTR 5KV TRANSISTOR 4-SMD

In Stock:: 2228

Quantity:: Add To Cart

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EL817(S)(D)(TA)-G Specifications

Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Discontinued at Mosen
NumberofChannels:
1
Voltage-Isolation:
5000Vrms
CurrentTransferRatio(Min):
300% @ 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)(D)(TA)-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)(D)(TA)-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)(D)(TA)-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)(D)(TA)-G information

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EL817(S)(D)(TA)-G Typical application Circuitry

EL817(S)(D)(TA)-G

An optocoupler, sometimes referred to as an optoisolator, is a device that employs light to transfer electrical signals between two isolated circuits. The EL817(S)(D)(TA)-G is one such device. It usually comprises of a phototransistor and an infrared LED enclosed in an electrically insulating but light-transmitting substance. Optocouplers like the EL817(S)(D)(TA)-G are widely used in various applications to provide electrical isolation and to protect sensitive components from high voltage transients and electrical noise.

Application Scenario: Microcontroller to Relay Interface

One common application of the EL817(S)(D)(TA)-G is interfacing a microcontroller (MCU) with a relay, which is used to control high-power loads. The EL817(S)(D)(TA)-G provides electrical isolation between the low-power MCU circuit and the high-power relay circuit, safeguarding the MCU from potential high voltage spikes.

Parameter Features

The EL817(S)(D)(TA)-G has several important parameters:

- Isolation Voltage: This parameter specifies the maximum voltage that can be isolated between the input and output, ensuring the safety of low-voltage circuits.

- Current Transfer Ratio (CTR): CTR indicates the efficiency of the optocoupler, defined as the ratio of the output photocurrent to the input LED current.

- Forward Current: The maximum current that the input LED can handle without damage.

- The highest voltage that the output phototransistor can tolerate is known as the collector-emitter voltage.

Circuit Connection Details In a microcontroller to relay interface using the EL817(S)(D)(TA)-G, the connections would be as follows:

1. Input Side Connection: Join the anode of the EL817(S)(D)(TA)-G input LED with the MCU output pin. To safeguard the LED, its cathode is connected to ground via a current-limiting resistor.

2. Output Side Connection: The collector of the EL817(S)(D)(TA)-G phototransistor is connected to the relay coil's one end, and the other end of the coil is connected to the power supply (Vcc). The phototransistor's emitter is linked to the ground.

3. Flyback Diode: A flyback diode is placed across the relay coil to protect the EL817(S)(D)(TA)-G from inductive voltage spikes when the relay is turned off.

4. Base Resistor: Although not always necessary for optocouplers, some designs may include a resistor between the MCU output and the EL817(S)(D)(TA)-G input to fine-tune the input LED current.

Design Considerations

When designing circuits with the EL817(S)(D)(TA)-G, consider the following:

- Current Limiting Resistor Value: Calculate the value of the current-limiting resistor on the input side to ensure the LED operates within safe limits but is still able to activate the phototransistor effectively.

- Relay Coil Voltage and Current: Ensure that the relay coil's voltage and current requirements are compatible with the output capabilities of the EL817(S)(D)(TA)-G phototransistor.

- Isolation Requirements: Verify that the isolation voltage of the EL817(S)(D)(TA)-G meets the requirements of the application to protect the low-voltage side from high voltage transients.

- CTR Matching: Choose an EL817(S)(D)(TA)-G with a CTR suitable for the application, ensuring that the phototransistor can be driven into saturation by the current provided by the MCU through the input LED.

Incorporating the EL817(S)(D)(TA)-G in a microcontroller to relay interface circuit involves careful consideration of the device's parameters, the relay specifications, and the operational environment to ensure safe and reliable control of high-power loads.

EL817(S)(D)(TA)-G FAQ

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6. What is the process for return or replacement of EL817(S)(D)(TA)-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)(D)(TA)-G we delivered, we will accept the replacement or return of the EL817(S)(D)(TA)-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)(D)(TA)-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