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TLP521-1+ from TOSHIBA

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TLP521-1+

Manufacturer: TOSHIBA

Photocoupler GaAs Ired & Photo -Transistor

Partnumber Manufacturer Quantity Availability
TLP521-1+,TLP5211 TOSHIBA 303 In Stock

Description and Introduction

Photocoupler GaAs Ired & Photo -Transistor The TLP521-1+ is an optocoupler manufactured by Toshiba. Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Manufacturer:** Toshiba  
- **Type:** Phototransistor Optocoupler  
- **Isolation Voltage:** 5000 Vrms (min)  
- **Collector-Emitter Voltage (VCEO):** 55 V (max)  
- **Collector Current (IC):** 50 mA (max)  
- **Current Transfer Ratio (CTR):** 50% (min) at IF = 5 mA, VCE = 5 V  
- **Input Forward Current (IF):** 50 mA (max)  
- **Forward Voltage (VF):** 1.15 V (typ) at IF = 10 mA  
- **Operating Temperature Range:** -55°C to +110°C  
- **Package Type:** DIP-4  

### **Descriptions:**  
- The TLP521-1+ is a single-channel photocoupler consisting of a GaAs infrared LED and a silicon phototransistor.  
- It provides electrical isolation between input and output circuits.  
- Suitable for signal transmission in digital and analog circuits.  

### **Features:**  
- **High Isolation Voltage:** 5000 Vrms ensures reliable isolation.  
- **Compact DIP-4 Package:** Space-saving and easy to mount.  
- **Wide Operating Temperature Range:** Suitable for industrial applications.  
- **High CTR:** Ensures efficient signal transfer.  
- **Low Input Current Requirement:** Compatible with low-power circuits.  

This information is based on Toshiba's official datasheet for the TLP521-1+ optocoupler.

Application Scenarios & Design Considerations

Photocoupler GaAs Ired & Photo -Transistor

Alternative Part Number

  • PC817X1NSZ0F --: Industry-standard single-channel phototransistor optocoupler with CTR and isolation ratings comparable to the TLP521-1, widely available and pin-compatible in most DIP-4 sockets.
  • EL817 --: Direct functional equivalent DIP-4 phototransistor optocoupler with similar CTR bins and 5 kV isolation, commonly used as a drop-in replacement for TLP521-1.
  • LTV-817 --: Low-cost single-channel phototransistor optocoupler matching the TLP521-1's DIP-4 footprint and CTR range, suitable for general isolation and signal-transfer applications.

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