TCLT1100

Overview

The TCLT1100 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor with base output in a low-profile 6-SOP, 5-pin surface mount package. The device provides high isolation capability with a test voltage of 5000 VRMS. Key electrical parameters include a maximum collector-emitter voltage of 80 V and a maximum collector current of 50 mA. The forward voltage is typically 1.25 V with a maximum forward current of 60 mA. The saturation voltage is limited to 300 mV. Timing characteristics specify a typical rise time of 3 µs and a fall time of 4.7 µs.

Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor.
• Features a dedicated base terminal on the phototransistor for enhanced switching speed control and noise immunity.
• Utilizes a compact, low-profile SMD package designed for automated surface mount assembly processes.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microprocessors and digital logic gates
• Switching power supply feedback loops

Procurement Notes

Verify the specific CTR binning code required for your application, as the TCLT1100 series offers flexibility in current transfer ratio ranges. Confirm that the 6-SOP, 5-pin footprint matches your PCB layout constraints. Ensure compliance with RoHS directives if applicable to your manufacturing region. Cross-reference the datasheet revision date to confirm parameter stability against older versions.

Selection Notes

Select this component when a single channel with base access is needed for improved switching performance compared to standard phototransistors. Consider the 80 V collector-emitter voltage rating for medium-voltage switching applications. Evaluate the 5000 VRMS isolation rating against your safety clearance requirements. Compare the 3 µs rise time against system timing budgets to ensure adequate speed for the intended data rate.

Part Context

The TCLT1100 belongs to the TCLT family of Vishay's transistor output optocouplers. This series is characterized by its use of gallium arsenide infrared LEDs coupled with silicon NPN phototransistors. The family includes variants with different CTR specifications and packaging options, catering to diverse isolation needs in consumer and industrial electronics.

Replacement Considerations

Direct substitutes within the same Vishay lineup include the TCLT1102 and TCLT1103, which share similar pinouts and electrical characteristics but may differ in Current Transfer Ratio (CTR) bins or specific testing conditions. Verify that any replacement part maintains the 6-SOP, 5-pin form factor and equivalent isolation voltage ratings.