VISHAY TCMT1100 1-Channel Phototransistor Optocoupler, SOP-4, 60mA, 3.75kV

The VISHAY TCMT1100 is a high-performance 1-channel phototransistor output optocoupler, engineered to provide reliable signal isolation. It consists of a gallium arsenide infrared-emitting diode optically coupled to a phototransistor, with both elements mounted on a single lead-frame. This design ensures a fixed and precise distance between the input and output, meeting stringent safety requirements for electrical isolation.

This component is characterised by a low temperature coefficient of CTR (Current Transfer Ratio) and a typical low coupling capacitance of just 0.3pF. It is designed to handle a forward current of 60mA and offers a reverse voltage of 6V. With an operating ambient temperature range from -40°C to +100°C, it is built for stability in challenging environments.

Key applications include programmable logic controllers (PLCs), modems, answering machines, and general-purpose circuits where signal integrity and safety are paramount. It is also widely used in automation and process control systems, as well as communications and networking equipment within industrial settings.

The optocoupler provides a high isolation test voltage of 3750 VRMS, ensuring robust protection against voltage transients and enhancing system safety. Its compact SOP (Small Outline Package) case style with 4 pins makes it suitable for space-constrained PCB designs.

Specifications at a Glance

• Technology: Phototransistor output
• Configuration: 1-channel, 4-pin
• Package: SOP (Small Outline Package)
• Forward Current (If Max): 60 mA
• Isolation Voltage: 3.75 kV (3750 VRMS)
• CTR (Current Transfer Ratio) Minimum: 50%
• Collector-Emitter Voltage (V(br)ceo): 70 V
• Operating Temperature Range: -40°C to +100°C
• Typical Coupling Capacitance: 0.3 pF
• Reverse Voltage: 6 V
• Dimensions (L x W x H): 15 mm x 33