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TLP521--4 from QTC

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TLP521--4

Manufacturer: QTC

Photocoupler (photo-IC output)

Partnumber Manufacturer Quantity Availability
TLP521--4,TLP5214 QTC 2 In Stock

Description and Introduction

Photocoupler (photo-IC output) The TLP521-4 is an optocoupler manufactured by QTC. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Isolation Voltage:** 5000 Vrms (min)  
- **Collector-Emitter Voltage (VCEO):** 55 V  
- **Collector Current (IC):** 50 mA  
- **Current Transfer Ratio (CTR):** 50% (min) at IF = 5 mA, VCE = 5 V  
- **Input Forward Current (IF):** 25 mA (max)  
- **Reverse Input Voltage (VR):** 5 V  
- **Operating Temperature Range:** -55°C to +110°C  
- **Package Type:** DIP-16  

### **Descriptions:**  
- The TLP521-4 is a quad-channel photocoupler (optocoupler) consisting of an infrared LED optically coupled to a phototransistor.  
- It provides electrical isolation between input and output circuits.  
- Suitable for high-voltage applications requiring signal isolation.  

### **Features:**  
- **High Isolation Voltage:** Ensures reliable insulation between input and output.  
- **Quad-Channel Configuration:** Contains four independent optocouplers in a single package.  
- **Low Input Current:** Compatible with low-power logic circuits.  
- **Wide Operating Temperature Range:** Suitable for industrial and automotive applications.  
- **Lead-Free & RoHS Compliant:** Meets environmental standards.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Photocoupler (photo-IC output)

Alternative Part Number

  • PC817 --: Industry-standard single-channel optocoupler with similar CTR and isolation ratings; widely available and often used as a direct substitute in multi-channel designs.
  • LTV-847 --: Quad-channel optocoupler in a 16-pin DIP package, functionally equivalent to the TLP521-4 with comparable isolation voltage and current transfer ratio.
  • PC847 --: Quad-channel optocoupler matching the TLP521-4 pinout and channel count, suitable for direct replacement in isolated interface circuits.

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