Photocoupler Photorelay The TLP174G is an optocoupler manufactured by **TOSHIBA**. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Isolation Voltage:** 3750 Vrms (min)
- **Collector-Emitter Voltage (VCEO):** 80 V
- **Collector Current (IC):** 50 mA
- **Current Transfer Ratio (CTR):** 50% (min) at IF = 5 mA, VCE = 5 V
- **Input Forward Current (IF):** 50 mA (max)
- **Forward Voltage (VF):** 1.3 V (typ) at IF = 5 mA
- **Turn-On Time (ton):** 0.5 µs (max)
- **Turn-Off Time (toff):** 0.5 µs (max)
- **Operating Temperature Range:** -55°C to +110°C
### **Description:**
- The **TLP174G** is a **phototransistor coupler** with **high isolation voltage** and **fast switching speed**.
- It consists of a **GaAs infrared LED** optically coupled to a **silicon phototransistor**.
- Suitable for **signal isolation** in **digital logic circuits, I/O interfaces, and industrial control systems**.
### **Features:**
- **High isolation voltage (3750 Vrms)**
- **Fast response time (0.5 µs max for ton/toff)**
- **Compact 4-pin DIP package**
- **Low input current requirement**
- **Wide operating temperature range (-55°C to +110°C)**
- **Compliant with safety standards (UL, CSA, IEC)**
This information is based on TOSHIBA's official datasheet for the TLP174G optocoupler.
