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TCDT1124 from VISHAY

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TCDT1124

Manufacturer: VISHAY, VIS

Optocouplers

Partnumber Manufacturer Quantity Availability
TCDT1124 VISHAY, VIS 918 In Stock

Description and Introduction

Optocouplers **Part Number:** TCDT1124  
**Manufacturer:** VISHAY  

### **Specifications:**  
- **Type:** Optocoupler, Phototransistor Output  
- **Input Type:** Infrared LED  
- **Output Type:** Phototransistor  
- **Isolation Voltage:** 5000 Vrms  
- **Current Transfer Ratio (CTR):** 50% (min) at 5mA input current  
- **Collector-Emitter Voltage (VCEO):** 70V  
- **Collector Current (IC):** 50mA  
- **Forward Current (IF):** 60mA  
- **Rise Time (tr):** 3μs (typical)  
- **Fall Time (tf):** 3μs (typical)  
- **Operating Temperature Range:** -55°C to +110°C  
- **Package:** DIP-4  

### **Descriptions & Features:**  
- High isolation voltage for safety in industrial and medical applications.  
- Phototransistor output with high current transfer ratio (CTR).  
- Fast switching speed suitable for digital signal isolation.  
- Compact DIP-4 package for easy PCB mounting.  
- RoHS compliant.  

(Source: VISHAY datasheet for TCDT1124)

Application Scenarios & Design Considerations

Optocouplers

Alternative Part Number

  • SFH617A-3 --: Standard optocoupler with similar CTR and isolation voltage, widely available and pin-compatible in most circuits.
  • PC817X3NSZ0F --: Common 4-pin DIP optocoupler with comparable current transfer ratio and isolation, suitable drop-in replacement.
  • LTV-817S-TA1 --: Low-cost optocoupler with similar electrical characteristics and isolation rating, good second-source option.
  • H11A1 --: Classic 6-pin DIP optocoupler with phototransistor output, widely available and functionally similar to the TCDT1124 for general isolation applications.
  • 4N25 --: Standard 6-pin DIP phototransistor optocoupler with similar CTR and isolation ratings, commonly used as a drop-in substitute.
  • PC817 --: Popular 4-pin DIP phototransistor optocoupler offering comparable isolation performance; pinout differs so layout check is required.

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