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TLP621-3 from TOS,TOSHIBA

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TLP621-3

Manufacturer: TOS, TOSHIBA

Photocoupler

Partnumber Manufacturer Quantity Availability
TLP621-3,TLP6213 TOS, TOSHIBA 385 In Stock

Description and Introduction

Photocoupler The TLP621-3 is a photocoupler (optocoupler) manufactured by **TOSHIBA**. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Isolation Voltage:** 5000 Vrms (min)  
- **Collector-Emitter Voltage (VCEO):** 55 V (max)  
- **Collector Current (IC):** 50 mA (max)  
- **Current Transfer Ratio (CTR):**  
  - **Minimum:** 50% (at IF = 5 mA, VCE = 5 V)  
  - **Maximum:** 600% (at IF = 5 mA, VCE = 5 V)  
- **Input Forward Current (IF):** 60 mA (max)  
- **Forward Voltage (VF):** 1.3 V (typ) at IF = 10 mA  
- **Turn-On Time (ton):** 3 μs (max)  
- **Turn-Off Time (toff):** 4 μs (max)  
- **Operating Temperature Range:** -55°C to +110°C  

### **Description:**  
- The **TLP621-3** is a **phototransistor-output photocoupler** that provides electrical isolation between input and output circuits.  
- It consists of a **GaAs infrared LED** optically coupled to a **silicon phototransistor**.  
- Designed for **high-speed switching** and **signal isolation** in various electronic applications.  

### **Features:**  
- **High isolation voltage (5000 Vrms)**  
- **Compact and reliable DIP-4 package**  
- **High current transfer ratio (CTR)**  
- **Fast response time (μs range)**  
- **Wide operating temperature range**  
- **Suitable for noise suppression and signal transmission**  

This information is based on TOSHIBA's official datasheet for the TLP621-3 photocoupler.

Application Scenarios & Design Considerations

Photocoupler

Alternative Part Number

  • PC817X3NSZ0F --: Triple-channel phototransistor optocoupler in DIP package, widely used as a direct functional replacement for the TLP621-3 with similar CTR and isolation ratings.
  • LTV-827 --: Dual/triple-channel optocoupler family offering comparable current transfer ratio and isolation voltage, commonly cross-referenced for TLP621 series designs.
  • PC3Q67Q --: Multi-channel phototransistor optocoupler with similar input/output characteristics and DIP footprint, suitable as an alternative when TLP621-3 is unavailable.
  • PC817 --: Industry-standard single-channel optocoupler with similar CTR and isolation ratings; widely available and often used as a direct substitute in many circuits.
  • LTV-817 --: Pin-compatible single-channel phototransistor optocoupler with comparable CTR and isolation voltage; common low-cost alternative to Toshiba TLP series.
  • EL817 --: Single-channel optocoupler with similar electrical characteristics and DIP-4 package; frequently cross-referenced for TLP621 applications.

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