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

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

Manufacturer:: Everlight Electronics Co Ltd

Package:: 4-SMD, Gull Wing

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

Description:: OPTOISOLTR 5KV TRANSISTOR 4-SMD

In Stock:: 2207

Quantity:: Add To Cart

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EL817(S)(TB) 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)(TB) 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) 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) 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) information

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EL817(S)(TB) Typical application Circuitry

EL817(S)(TB)

The EL817(S)(TB) optocoupler, sometimes referred to as an optical isolator, is a part that connects two isolated circuits by means of light to transfer electrical signals. 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.

Use Cases

Consumer electronics, industrial control systems, power supply circuits, and communication systems are among the applications for EL817(S)(TB). A specific application scenario could be its use in an isolated relay driving circuit, where it provides electrical isolation between a microcontroller and a high-power relay.

Parameter Features

The EL817(S)(TB) features include 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 Relay Driving Circuit

In an isolated relay driving circuit, EL817(S)(TB) can be used to control a relay coil from a microcontroller, providing electrical isolation between the low-power control circuit and the high-power load controlled by the relay.

- Power Supply to LED: Attach the internal LED's anode to the microcontroller's digital output pin via a current-limiting resistor, and attach the LED's cathode to the microcontroller side's ground. With this configuration, the LED can be controlled by the microcontroller according to the relay's desired state.

- Phototransistor Output: Connect the collector of the phototransistor to the positive supply voltage of the relay coil through the relay coil itself, and connect the emitter to the ground of the relay side. The phototransistor will conduct based on the LED's light, energizing the relay coil and switching the relay.

- Current-Limiting Resistor: A resistor is connected in series with the LED to limit the current through the LED to safe levels, preventing damage to the LED. - Flyback Diode: A diode is connected across the relay coil in reverse bias to protect the circuit from voltage spikes generated when the relay coil is de-energized.

- Input Signal from Microcontroller: The microcontroller's digital output pin controls the LED within the EL817(S)(TB), which in turn controls the phototransistor and the relay.

When designing circuits with EL817(S)(TB), it's important to consider the current and voltage requirements of the LED and phototransistor to ensure proper operation. The intended current through the LED and the supply voltage should be taken into consideration when selecting the value of the current-limiting resistor. Additionally, the isolation voltage rating of the optocoupler should exceed the maximum voltage difference that might appear across the isolation barrier to ensure safety and reliability.It is important to adhere to proper PCB layout techniques in order to preserve the electrical isolation.

EL817(S)(TB) FAQ

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We have a professional and experienced quality control team to strictly verify and test the EL817(S)(TB). All suppliers must pass our qualification reviews before they can publish their products including EL817(S)(TB) on icwhale.com; we pay more attention to the channels and quality of EL817(S)(TB) products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

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

The price and inventory of EL817(S)(TB) fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

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

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

(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