TCMT1109 The Vishay TCMT1109 is a single-channel optocoupler featuring a phototransistor output. It offers 3750Vrms isolation and is housed in a surface-mount 4-SOP package.
Mfr Part #:

TCMT1109

Available from 5 distributors
Mfr Name: Vishay
Vishay
The Vishay TCMT1109 is a single-channel optocoupler featuring a phototransistor output. It offers 3750Vrms isolation and is housed in a surface-mount 4-SOP package.
Total Stock: 235,690 pcs
$ Price Range: $0.39

TCMT1109 Available from 5 distributors

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200,000 pcs
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31,020 pcs
31020 pcs On Request 1 On Request On Request 1241+ On Request 2026-06-03 08:15:28
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127 pcs
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TCMT1109 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Current Transfer Ratio (Max)
Current Transfer Ratio (Min)
Forward Voltage
Input Type
Lead Spacing
Maximum Collector Current
Maximum Collector-Emitter Voltage
Mounting Type
Number of Channels
Operating Temperature
Output Type
Package Height
Package Length
Package Width
Power Dissipation
Reverse Voltage
Rise
Supplier Device Package
Supplier Package
Tape & Reel
Tape and Reel
Turn On
Vce Saturation (Max)
Voltage

TCMT1109 Description

Short technical summary and product information.

The Vishay TCMT1109 is a single-channel optocoupler designed for applications requiring electrical isolation. It consists of an infrared-emitting diode coupled to a phototransistor, providing a high isolation voltage of 3750Vrms.

 

This optocoupler operates with a forward current of 60 mA and features a maximum collector current of 50 mA. The Vce saturation voltage is a maximum of 300mV at 5mA, and the typical forward voltage is 1.6V. The current transfer ratio (CTR) ranges from a minimum of 200% to a maximum of 400% at 5mA.

 

Designed for surface mounting, the TCMT1109 comes in a compact 4-SOP package with dimensions of 2.8mm length, 4.4mm width, and 1.9mm height. It operates within a wide ambient temperature range of -40°C to 100°C. The device is available on tape and reel.

 

Key applications include programmable logic controllers, modems, and answering machines, where reliable signal isolation is critical. Agency approvals include UL1577 and DIN EN 60747-5-5.

TCMT1109 Quick Information

Product Type: Optocoupler
Series: TCMT110.
Canonical Name: Vishay TCMT1109 Optocoupler
Subcategory: Transistor Output Optocoupler

TCMT1109 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TCMT1109 Estimated Pricing

Qty Low High
1+ $0.39 $0.39

Estimated market price range - modelled values for guidance only, not live distributor offers.

TCMT1109 Features

  • 3750Vrms isolation voltage rating.
  • Phototransistor output for signal isolation.
  • Wide -40°C to 100°C operating temperature.
  • Surface mount 4-SOP package.
  • Available on tape and reel.

TCMT1109 Applications

  • Used in programmable logic controllers.
  • Suitable for modem applications.
  • Applied in answering machines.
  • General purpose isolation needs.

TCMT1109 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the isolation voltage of the TCMT1109 optocoupler?

The TCMT1109 optocoupler has an isolation voltage of 3750Vrms.

What is the typical forward current for the TCMT1109?

The typical forward current for the TCMT1109 is 60 mA.

What is the operating temperature range for the TCMT1109?

The TCMT1109 operates in a temperature range of -40°C to 100°C.

What package type is the TCMT1109 available in?

The TCMT1109 is available in a 4-SOP package for surface mounting.

What is the minimum current transfer ratio (CTR) for the TCMT1109?

The minimum current transfer ratio (CTR) for the TCMT1109 is 200% at 5mA.

What is the maximum current transfer ratio (CTR) for the TCMT1109?

The maximum current transfer ratio (CTR) for the TCMT1109 is 400% at 5mA.

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