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

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Everlight Electronics Co Ltd EL817(S)(D)(TA)

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

Manufacturer:: Everlight Electronics Co Ltd

Package:: 4-SMD, Gull Wing

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

Description:: OPTOISOLTR 5KV TRANSISTOR 4-SMD

In Stock:: 3414

Quantity:: Add To Cart

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EL817(S)(D)(TA) 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):
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)(D)(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)(D)(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)(D)(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)(D)(TA) information

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

EL817(S)(D)(TA)

The EL817(S)(D)(TA) is an optocoupler, also known as an optoisolator, which is widely used in electronic circuits to transfer electrical signals between two isolated circuits using light to prevent high voltages from affecting the system receiving the signal. This component typically consists of an infrared LED and a phototransistor, allowing it to provide electrical isolation while transmitting the signal.

Application Scenario: Digital Signal Isolation

A common application for the EL817(S)(D)(TA) is in digital signal isolation, where it is used to isolate sensitive electronics from potentially harmful high voltages commonly found in industrial environments, such as in PLC (Programmable Logic Controller) systems.

Parameter Features

The EL817(S)(D)(TA) has several key parameters:

- Isolation Voltage: This parameter indicates the maximum voltage that the device can withstand between its input and output, ensuring safe isolation of circuits.

- Current Transfer Ratio (CTR): This is the ratio of the output current to the input current, indicating the efficiency of the signal transfer from the LED to the phototransistor.

- Forward Current: The maximum current that can safely pass through the LED.

- Collector-Emitter Voltage: The maximum voltage that can be applied across the phototransistor.

Circuit Connection Details

For digital signal isolation in a PLC system using the EL817(S)(D)(TA), the circuit connections would be as follows:

1. Input Side Connection: Connect the PLC output (signal to be isolated) to the anode of the EL817(S)(D)(TA) LED. The cathode should be connected to the common ground through a current-limiting resistor to protect the LED.

2. Output Side Connection: Connect the collector of the EL817(S)(D)(TA) phototransistor to the input of the isolated circuit, which could be another part of the PLC or an external device. The emitter should be connected to the ground of the isolated circuit.

3. Current-Limiting Resistor: A resistor should be placed in series with the LED to limit the current flowing through it, preventing damage to the LED.

4. Pull-Up Resistor: On the output side, a pull-up resistor may be connected between the collector and the positive supply voltage of the isolated circuit to ensure proper logic levels are maintained when the phototransistor is off.

Design Considerations

When designing with the EL817(S)(D)(TA), several factors need to be considered:

- Choosing the Right Current-Limiting Resistor: The value of the resistor in series with the LED is crucial to ensure the LED is driven properly without exceeding its maximum forward current.

- CTR Matching: The EL817(S)(D)(TA) selected should have a CTR that matches the requirements of the circuit, ensuring that the output can adequately reflect the input signal.

- Isolation Requirements: The isolation voltage rating of the EL817(S)(D)(TA) must meet or exceed the maximum potential difference expected between the isolated circuits to ensure safety and reliability.

- Speed Requirements: The response time of the EL817(S)(D)(TA) should be considered to ensure it meets the speed requirements of the digital signal being isolated.

Incorporating the EL817(S)(D)(TA) in a digital signal isolation circuit for a PLC system involves careful planning and consideration of the device's electrical characteristics, the requirements of the PLC system, and the environmental conditions to ensure effective isolation and signal integrity.

EL817(S)(D)(TA) FAQ

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3. Are the EL817(S)(D)(TA) price and inventory displayed accurate?

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