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TLR346T from TOSHIBA

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TLR346T

Manufacturer: TOSHIBA, TOS

LED DISPLAY

Partnumber Manufacturer Quantity Availability
TLR346T TOSHIBA, TOS 1124 In Stock

Description and Introduction

LED DISPLAY The TLR346T is a photocoupler (optocoupler) manufactured by Toshiba. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Type**: Phototransistor Output Photocoupler  
- **Isolation Voltage**: 5000Vrms (min)  
- **Collector-Emitter Voltage (VCEO)**: 80V (max)  
- **Emitter-Collector Voltage (VECO)**: 5V (max)  
- **Collector Current (IC)**: 50mA (max)  
- **Current Transfer Ratio (CTR)**: 50% (min) at IF = 5mA, VCE = 5V  
- **Input Forward Current (IF)**: 50mA (max)  
- **Forward Voltage (VF)**: 1.25V (typ) at IF = 20mA  
- **Response Time (tPLH/tPHL)**: 3μs (typ)  
- **Operating Temperature Range**: -55°C to +110°C  

### **Descriptions:**  
- The TLR346T is a high-reliability photocoupler designed for signal isolation in various electronic circuits.  
- It consists of a GaAs infrared LED optically coupled to a phototransistor.  
- The device provides electrical isolation between input and output, preventing noise and voltage spikes.  

### **Features:**  
- **High Isolation Voltage**: 5000Vrms ensures robust electrical isolation.  
- **Compact 4-Pin DIP Package**: Suitable for space-constrained applications.  
- **Fast Response Time**: Enables use in high-speed signal transmission.  
- **Wide Operating Temperature Range**: Reliable performance in harsh environments.  
- **High Current Transfer Ratio (CTR)**: Ensures efficient signal transmission.  

This information is based on Toshiba's official documentation for the TLR346T photocoupler.

Application Scenarios & Design Considerations

LED DISPLAY

Alternative Part Number

  • TLR344T --: Same TLR3xxT series LED with similar electrical characteristics and package, differing only in luminous intensity bin, making it a close drop-in replacement.
  • TLR342T --: Same family LED with comparable forward voltage and viewing angle; lower intensity grade but pin-compatible and suitable for most indicator applications.
  • HLMP-1700 --: Industry-standard red LED in a similar through-hole package with comparable forward voltage and current ratings, usable as a cross-manufacturer alternative.
  • TLR346B --: Same TLR series family with similar optical and electrical characteristics, differing mainly in binning/color rank.
  • TLUR3400 --: Comparable through-hole red LED with similar forward voltage and luminous intensity, usable as a cross-manufacturer substitute.

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