TLP131 Toshiba Phototransistor Output Optocoupler IC SMD SOP 5 Package

TLP131 Toshiba Phototransistor Output Optocoupler IC SMD SOP 5 Package 

The TLP131 is a compact, high-performance phototransistor-type optocoupler manufactured by Toshiba, engineered to provide reliable electrical isolation and stable signal transfer between circuits operating at different voltage levels.
It combines an infrared-emitting diode (IRED) on the input side with a high-sensitivity NPN phototransistor on the output side. These components are enclosed in a surface-mount 5-pin SOP package, enabling compact PCB layouts and compatibility with automated reflow soldering processes.

Designed for both analog and digital applications, the TLP131 delivers high Current Transfer Ratio (CTR) across a wide range of input currents, ensuring efficient signal coupling even with low input drive power.
Its high insulation voltage rating—typically 3750 Vrms—provides robust galvanic isolation, making it suitable for noisy industrial environments or systems requiring protection from high-voltage transients.

The device features fast switching capability, allowing it to be used in moderate-speed signal transmission and control circuitry. Its wide operating temperature range enhances reliability in harsh environments, and the internal shielding structure helps minimize the impact of external electromagnetic interference.

Overall, the TLP131 offers an excellent balance of size, performance, electrical isolation, and reliability, making it a popular choice in embedded systems, industrial controls, and consumer electronic devices that need safe, efficient signal isolation.

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Features:-

• Collector?emitter voltage: 80V (min.)
• Current transfer ratio: 50% (min.)
• Rank GB: 100% (min.)
• Isolation voltage: 3750Vrms (min.)
• UL recognized: UL1577, file No. E67349
• TLP131 base terminal is for the improvement of speed, reduction of dark current, and enable operation

Specification:-

Applications

• Microcontroller and logic signal isolation
• Switching power supply (SMPS) feedback circuits
• Relay, transistor, and MOSFET driver isolation
• Industrial control and automation equipment
• Home appliance control boards
• Communication interfaces and digital isolators
• Noise filtering and signal conditioning
• General-purpose input/output isolation

TLP131_Datasheet