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TLP521-2

Manufacturer: FAIRS, TOS, TOSHIBA, T, TOSHIBA

Photocoupler GaAs Ired & Photo -Transistor

Partnumber Manufacturer Quantity Availability
TLP521-2,TLP5212 FAIRS, TOS, TOSHIBA, T, TOSHIBA 9124 In Stock

Description and Introduction

Photocoupler GaAs Ired & Photo -Transistor The TLP521-2 is an optocoupler manufactured by Toshiba. 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 (max)  
- **Emitter-Collector Voltage (VECO):** 7 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):** 25 mA (max)  
- **Forward Voltage (VF):** 1.15 V (typ) at IF = 5 mA  
- **Operating Temperature Range:** -55°C to +110°C  
- **Package Type:** DIP-8  

### **Descriptions:**  
- The TLP521-2 consists of two optically coupled gallium arsenide infrared LEDs and silicon NPN phototransistors in a single package.  
- It provides electrical isolation between input and output circuits.  
- Commonly used in signal isolation, noise suppression, and voltage level shifting applications.  

### **Features:**  
- **High Isolation Voltage:** 5000 Vrms ensures strong electrical isolation.  
- **Dual-Channel Configuration:** Contains two independent optocouplers in one package.  
- **Compact DIP-8 Package:** Suitable for PCB mounting.  
- **Wide Operating Temperature Range:** Reliable performance in extreme conditions.  
- **Low Input Current Requirement:** Efficient for driving with low-power circuits.  

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

Application Scenarios & Design Considerations

Photocoupler GaAs Ired & Photo -Transistor

Alternative Part Number

  • PC817X2NSZ0F --: Dual-channel phototransistor optocoupler in DIP-8, directly comparable CTR and isolation ratings to the TLP521-2.
  • EL817 --: Widely available single/dual phototransistor optocoupler family with similar CTR and 5 kV isolation, a common drop-in replacement.
  • LTV-827 --: Dual-channel phototransistor optocoupler in DIP-8 with equivalent CTR ranges and isolation voltage, suitable as a functional substitute.
  • PC817C --: Industry-standard single-channel optocoupler with similar CTR and isolation ratings; widely available and pin-compatible in many TLP521-2 designs.
  • EL827 --: Dual-channel phototransistor optocoupler, DIP-8 package, comparable CTR and isolation voltage, suitable drop-in replacement.
  • PC827 --: Dual-channel optocoupler in DIP-8 package with comparable current transfer ratio and isolation voltage, suitable drop-in alternative.

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