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IL55B from INFINEON

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IL55B

Manufacturer: INFINEON, VISHAY

PHOTODARLINGTON OPTOCOUPLER

Partnumber Manufacturer Quantity Availability
IL55B INFINEON, VISHAY 3302 In Stock

Description and Introduction

PHOTODARLINGTON OPTOCOUPLER The part **IL55B** is manufactured by **Infineon**. Below are the specifications, descriptions, and features based on available information:

### **Specifications:**
- **Manufacturer:** Infineon Technologies  
- **Part Number:** IL55B  
- **Type:** Optocoupler / Optoisolator  
- **Isolation Voltage:** Typically 5kV (exact value may vary)  
- **Output Type:** Phototransistor  
- **Current Transfer Ratio (CTR):** Varies based on conditions (e.g., 50% to 600%)  
- **Input Current (Forward Current - IF):** Typically 5mA to 50mA  
- **Output Collector-Emitter Voltage (VCEO):** Typically 30V to 70V  
- **Operating Temperature Range:** -40°C to +85°C (or +100°C, depending on variant)  
- **Package Type:** Typically DIP-4 or similar through-hole/SMD package  

### **Descriptions:**
- The **IL55B** is an optocoupler designed to provide electrical isolation between input and output circuits.  
- It consists of an infrared LED (input side) and a phototransistor (output side) in a single package.  
- Commonly used for signal isolation, noise suppression, and interfacing in industrial, automotive, and consumer electronics.  

### **Features:**
- **High Isolation Voltage:** Ensures safety in high-voltage applications.  
- **Fast Switching Speed:** Suitable for digital signal transmission.  
- **Wide CTR Range:** Provides flexibility in design.  
- **Reliable Performance:** Long operational lifespan under specified conditions.  
- **Compliance:** Meets industry standards for optocouplers (e.g., UL, IEC).  

For exact datasheet details, refer to **Infineon’s official documentation** for the IL55B.

Application Scenarios & Design Considerations

PHOTODARLINGTON OPTOCOUPLER

Alternative Part Number

  • SFH615A-2 --: Industry-standard optocoupler with similar CTR and isolation ratings, widely available and pin-compatible in most IL55B sockets.
  • PC817X2 --: Common 5-pin optocoupler offering comparable current transfer ratio and isolation voltage, suitable as a functional replacement.
  • TLP521-1 --: Reliable single-channel optocoupler with similar electrical characteristics and pinout, often used to replace IL55B in industrial designs.
  • LTV-817S --: Cost-effective DIP-4 optocoupler with similar electrical characteristics and isolation performance, suitable as a functional substitute.

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