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Optocouplers

Optocouplers continue to be a cornerstone component in electronics, merging safety with functionality to meet the rigorous standards of today’s technological demands. Whether for professional, industrial, or personal use, their ability to couple electrical isolation with signal integrity makes them invaluable in complex electronic designs.

What are Optocouplers Used for?

Optocouplers, also known as optoisolators, are essential components in modern electronic systems. They efficiently transfer electrical signals between two isolated circuits while maintaining electrical separation. These devices leverage light to transmit data safely, ensuring that high voltages or surges on one side do not disrupt or damage the components on the other. Optocouplers are indispensable in environments where electrical isolation is crucial for safety and equipment integrity.

Popular Types Include

  • Phototransistor Optocouplers: These are commonly used to convert light signals into electrical signals using a phototransistor.
  • Photo-SCR Optocouplers: Suitable for high-voltage applications needing solid-state reliability.
  • Photo-Darlington Optocouplers: Offers higher current transfer ratios than phototransistors.
  • Photo-TRIAC Optocouplers: Ideal for controlling AC power loads.

Salient Features of Optocouplers

  • Prevents direct electrical connection between circuits.
  • Typically withstands thousands of volts.
  • Ensures quick signal transmission without delays.
  • Saves space on printed circuit boards (PCBs).

What Benefits Do They Offer?

  • Enhanced Safety: Minimises the risk of electric shocks and equipment damage.
  • Reliability: Operates effectively under a wide range of environmental conditions.
  • Versatility: Compatible with many digital and analogue signal interfaces.
  • Cost-Effective: Reduces the need for additional safety components.

Broad Range Applications

  • Industrial Automation: For controlling motors, drives, and other heavy machinery.
  • Telecommunications: Used in systems that require electrical isolation between high-frequency signal circuits.
  • Medical Equipment: Ensures patient and operator safety by isolating high voltages.
  • Consumer Electronics: Provides isolation in devices like power supplies and audio equipment.

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Enrgtech #
Manufacturer Part No
Name
Availability
Price
Rating
HCPL-0201-000E, Broadcom
131 In Stock
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1 +
£ 2.66
5 +
£ 2.26
25 +
£ 1.86
TLP291(BL,SE(T, Toshiba
Pre Order
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Lite-On
LTV-847S, Lite-On
1548 In Stock
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25 +
£ 0.38
Broadcom
6N136-000E, Broadcom
239 In Stock
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1 +
£ 1.34
10 +
£ 0.89
50 +
£ 0.76
HCNW2211-000E, Broadcom
3 In Stock
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1 +
£ 3.56
10 +
£ 2.97
50 +
£ 2.48
HCPL-181-00BE, Broadcom
639 In Stock
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1 +
£ 0.56
HCPL-2232-300E, Broadcom
38 In Stock
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1 +
£ 5.09
10 +
£ 3.82
25 +
£ 3.59
HCNW2601-000E, Broadcom
Pre Order
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3 +
£ 2.99
15 +
£ 2.23
60 +
£ 2.12
ACNW3190-000E, Broadcom
Pre Order
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1 +
£ 4.50
10 +
£ 4.27
25 +
£ 4.00
Vishay
ILQ621, Vishay
18 In Stock
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5 +
£ 2.44
25 +
£ 2.22
50 +
£ 2.00
Renesas Electronics
RV1S9260ACCSP-10YV#SC0, Renesas Electronics
18 In Stock
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20 +
£ 2.69
40 +
£ 2.35
100 +
£ 2.08
Renesas Electronics
RV1S2281ACCSP-10YC#SC0, Renesas Electronics
5598 In Stock
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25 +
£ 0.86
100 +
£ 0.76
250 +
£ 0.67
Renesas Electronics
RV1S2281ACCSP-10YV#SC0, Renesas Electronics
Pre Order
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20 +
£ 0.89
40 +
£ 0.54
100 +
£ 0.48
Toshiba
TLP185(SE, Toshiba
248 In Stock
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125 +
£ 0.14
HCPL-2630-000E, Broadcom
625 In Stock
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1 +
£ 3.27
10 +
£ 2.48
25 +
£ 2.31
ACPL-332J-500E, Broadcom
848 In Stock
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850 +
£ 2.15
1700 +
£ 2.09
4250 +
£ 2.04
ACPL-M43T-500E, Broadcom
68 In Stock
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5 +
£ 1.09
TLP185(BLL,SE(T, Toshiba
898 In Stock
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50 +
£ 0.15
100 +
£ 0.13
150 +
£ 0.12
Isocom
IS2801-4, Isocom
17998 In Stock
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2000 +
£ 0.78
MOC3023XSMT&R, Isocom
998 In Stock
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1000 +
£ 0.41
3000 +
£ 0.40
Isocom
TLP521, Isocom
998 In Stock
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100 +
£ 0.18
200 +
£ 0.18
500 +
£ 0.17
Isocom
TLP521-2, Isocom
1648 In Stock
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50 +
£ 0.38
250 +
£ 0.32
1000 +
£ 0.31
Isocom
TLP621, Isocom
2498 In Stock
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100 +
£ 0.18
500 +
£ 0.17
1000 +
£ 0.16
Lite-On
LTV-217-A, Lite-On
Pre Order
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50 +
£ 0.20
Lite-On
LTV-3150, Lite-On
848 In Stock
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50 +
£ 0.62
100 +
£ 0.61
250 +
£ 0.59
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PC817X2NIP0F, Sharp

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1SNA645022R2700, ABB

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TLP2066(F), Toshiba

TLP2066(F), Toshiba

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AQY272, Panasonic

AQY272, Panasonic

AQY SSR These PCB mount DIP4-pin solid state relays are of the flat packaged type with dimensions of 9.3x8.8x3.9mm. These PCB solid state relays also have high senstivity and a low on-resistance. Typical applications include the controls of various types of loads such as test and measurement equipment, data communications, power supplies sensors etc. Various 4 pin DIP or SMT packages Highly sensitive and low on resistance Low level off state leakage current Operating temperature range of -40 to +85°C Controls various types of loads such as test and measurement equipment, data communications, power supplies sensors etc Approvals UL Recognised for Canada & US Sorry Your request could not be completed at this time
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ACPL-W454-000E, Broadcom

ACPL-W454-000E, Broadcom

Optocoupler, Intelligent Power Module (IPM) Interface, Avago Technologies Avago Technologies optocouplers for IPM (Intelligent Power Module) interface exhibit short propagation delay, fast IGBT switching, high common mode transient rejection and wide operating temperature range. Avago Technologies R2Coupler™ isolation products provide the reinforced insulation and reliability needed for critical automotive and high temperature applications. Optocouplers, Avago Technologies
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TLP521-4SM, Isocom

TLP521-4SM, Isocom

Optocoupler, Phototransistor Output, Isocom Components The TLP521-4 are quad channel optocouplers. Each channel is composed of a Gallium Arsenide infra-red emitting diode and a silicon phototransistor. Package style for this devices is 16 pin, with surface mount. Performance guaranteed over -55°C to +125°C temperature range High current transfer ratio 7500V electrical isolation Optocouplers, Isocom Components
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TLP521BL, Isocom

TLP521BL, Isocom

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VOM617A-2X001T, Vishay

VOM617A-2X001T, Vishay

Optocoupler, Transistor Output, VOM Series, Vishay Semiconductor Vishay low input current optocoupler with a phototransistor output VOM617A and VOM618A series protect equipment users from electrical shocks and protect the microprocessors within these systems from being damaged by voltage spikes. VOM617A and VOM618A series provides up to 3750Vrms of voltage Isolation Applications include Isolation in AC adapters, switch mode power supplies, programmable logic controllers, Industrial controls, telecom systems, smart meters, office equipment, power on Internet and solar Optocouplers VOM617A and VOM618A have an operating temperature up to 110 degrees Celsius. Optocouplers, Vishay Semiconductor
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SFH6186-4T, Vishay

SFH6186-4T, Vishay

Optocoupler, Transistor Output, SFH Series, Vishay Semiconductor VO617A and VO618A series provides up to 5300 Vrms of voltage Isolation. VO615A, VOL617A and VOL628A series provides up to 5000 Vrms of voltage Isolation. VOM617A and VOM618A series provides up to 3750 Vrms of voltage Isolation. VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A Applications include Isolation in AC adapters, switch mode power supplies, programmable logic controllers, Industrial controls, telecom systems, smart meters, office equipment, power on Internet and solar. Optocouplers VO615A, VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A have an operating temperature up to 110 degrees. Optocouplers, Vishay Semiconductor
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VOA300-EF-X019T, Vishay

VOA300-EF-X019T, Vishay

The Vishay automotive fast response linear optocoupler consists of an infrared emitter irradiating an isolated feedback and an output PIN photodiode in a bifurcated arrangement. The feedback photodiode captures a percentage of the LEDs flux and generates a control signal (IP1) that can be used to servo the LED drive current. This technique compensates for the LED’s non-linear, time, and temperature characteristics. AEC-Q102 qualified High gain linearity, ± 0.25 % typically Wide bandwidth, 1.4 MHz typically High gain stability, ± 0.005 %/°C typically High isolation voltage 5300 VRMS
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Optocouplers and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Optocouplers or any other product.
This depends on the Optocouplers individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Optocouplers and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Optocouplers.
Yes. We keep updating our stock frequently and if a product like Optocouplers is not in stock then we will let you know.