Description
The TLP291-4 is a highly integrated, 4-channel transistor output optocoupler housed in a compact and thin SOIC-16 surface-mount package. Each channel comprises a high-efficiency Gallium Arsenide (GaAs) infrared-emitting diode optically coupled to a silicon phototransistor.
Designed for high-density PCB layouts, the TLP291-4 is perfect for space-constrained applications like hybrid ICs and Programmable Logic Controllers (PLCs). It features a wide operating temperature range (-55°C to 110°C) and provides reliable electrical isolation, making it a robust solution for signal transmission between systems with different voltage potentials.
Note: Product images are for reference only. The actual product may vary in appearance or manufacturer marking depending on stock availability.
Features
- Compact Design: Housed in a thin, space-efficient SOIC-16 surface-mount package.
- High Reliability: Guaranteed performance across a wide temperature range (-55°C to 110°C).
- Electrical Ratings: Collector-Emitter breakdown voltage of 80V (min) and isolation voltage of 2500 Vrms (min).
- Efficiency: High Current Transfer Ratio (CTR) of 50% minimum (100% min for GB rank).
- Safety Standards: Compliant with major international safety certifications (UL, cUL, BSI).
Benefits
- Facilitates high-density board mounting in industrial applications.
- Ensures stable operation even in harsh thermal environments.
- Protects sensitive logic circuits by providing strong galvanic isolation.
- Multi-channel architecture reduces the number of components required for complex signal routing.
Applications
- Programmable Logic Controllers (PLCs)
- Switching Power Supplies
- Simplex/Multiplex Data Transmission
- Hybrid Integrated Circuits
- General Industrial System Isolation
Package Includes
- 1 x TLP291-4 Toshiba Transistor Output Optocoupler (SMD SOIC-16)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | TLP291-4 |
| Device Type | 4-Channel Transistor Output Optocoupler |
| Package / Case | SMD-16 (SOIC-16) |
| Mounting Type | Surface Mount (SMD) |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |



