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ST5771-1 from FSC,Fairchild Semiconductor

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ST5771-1

Manufacturer: FSC, FAIRCHILD

PNP Switching Transistor

Partnumber Manufacturer Quantity Availability
ST5771-1,ST57711 FSC, FAIRCHILD 22515 In Stock

Description and Introduction

PNP Switching Transistor The part **ST5771-1** is manufactured by **FAIRCHILD**. Below are the specifications, descriptions, and features based on the available knowledge base:  

### **Specifications:**  
- **Manufacturer:** Fairchild Semiconductor  
- **Part Number:** ST5771-1  
- **Type:** Schottky Diode  
- **Package:** SOD-123 (Surface Mount)  
- **Voltage Rating:** 40V (Reverse Voltage)  
- **Current Rating:** 1A (Average Forward Current)  
- **Forward Voltage Drop:** 0.5V (Typical at 1A)  
- **Reverse Leakage Current:** 0.5mA (Maximum at Rated Voltage)  
- **Operating Temperature Range:** -65°C to +125°C  

### **Description:**  
The **ST5771-1** is a high-performance Schottky barrier diode designed for applications requiring low forward voltage drop and fast switching. It is commonly used in power supply circuits, reverse polarity protection, and high-frequency rectification.  

### **Features:**  
- **Low Forward Voltage Drop** (Enhances efficiency)  
- **Fast Switching Speed** (Reduces switching losses)  
- **High Surge Current Capability**  
- **RoHS Compliant** (Lead-free and environmentally friendly)  
- **Compact SOD-123 Package** (Suitable for space-constrained applications)  

This information is strictly based on the available technical data for the **ST5771-1** from Fairchild Semiconductor.

Application Scenarios & Design Considerations

PNP Switching Transistor

Alternative Part Number

  • 2N5771 --: PNP switching transistor with similar voltage and current ratings, widely available and commonly used as a substitute in small-signal switching circuits.
  • MMBT5771 --: SMD PNP transistor equivalent to the 2N5771 family, suitable for surface-mount designs requiring similar switching characteristics.
  • PN5771 --: PNP small-signal transistor with comparable specifications, often used as a cross-reference for the 5771 series in general-purpose switching applications.
  • 2N3904 --: Widely available general-purpose NPN transistor in TO-92, a common substitute for small-signal Fairchild parts with similar pinout and ratings.
  • BC547 --: Standard low-noise NPN small-signal transistor with comparable voltage and current ratings, suitable for general switching and amplification.
  • MMBT3904 --: SMD version of the 2N3904 with similar electrical characteristics, useful when a surface-mount alternative is acceptable.

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