ISOCOM TIL197 Photodarlington Optocoupler, DIP-4, 50mA, 5.3kV

The ISOCOM TIL197 is a single-channel, 4-pin photodarlington optically coupled isolator, designed for reliable signal transmission in electronic circuits requiring electrical isolation. This high-density mounting component integrates an infrared light-emitting diode (IR LED) optically coupled to an NPN silicon photodarlington transistor, providing a high current transfer ratio (CTR). The standard parts are rigorously tested to ensure a minimum CTR of 500%, making it highly efficient for driving loads or interfacing between different circuit sections.

Constructed in a standard DIP (Dual In-line Package) format, it is perfectly suited for through-hole PCB mounting. A key feature is its high isolation voltage of 5.3kV, which ensures safe and robust electrical separation between input and output, protecting sensitive components from voltage spikes and ground loop issues. It operates with a forward current of up to 50mA and a collector-emitter voltage of 35V.

Ideal Applications

This optocoupler is engineered for signal transmission between systems of differing potentials and impedances. Its reliability across a wide operating temperature range from -30°C to +100°C makes it suitable for demanding environments. With a total power dissipation of 200mW, it is both efficient and durable for continuous operation.

Typical Uses

• Computer systems and peripherals for noise-free interfacing.
• Industrial control systems for isolating logic and power circuits.
• Test and measurement equipment requiring accurate signal integrity.
• General signal processing applications where electrical isolation is critical.

The ISOCOM TIL197 offers a dependable, industry-standard solution for designers and engineers needing high-gain, isolated switching or signal coupling in their projects.