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KSD1621 from UTG

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KSD1621

Manufacturer: UTG, FAIRCHILD

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSD1621 UTG, FAIRCHILD 581000 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The KSD1621 is a PNP silicon epitaxial planar transistor manufactured by FAIRCHILD. Here are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Type:** PNP Silicon Epitaxial Planar Transistor  
- **Collector-Emitter Voltage (VCEO):** -60V  
- **Collector-Base Voltage (VCBO):** -60V  
- **Emitter-Base Voltage (VEBO):** -5V  
- **Collector Current (IC):** -1.5A  
- **Power Dissipation (PD):** 1W  
- **Junction Temperature (Tj):** 150°C  
- **Storage Temperature Range (Tstg):** -55°C to +150°C  

### **Descriptions and Features:**  
- Designed for general-purpose amplification and switching applications.  
- High current gain (hFE) with a typical range of 60 to 320.  
- Low saturation voltage for efficient switching.  
- Epitaxial planar construction ensures reliability and performance.  
- Available in TO-92 package.  

These details are based on FAIRCHILD's documentation for the KSD1621 transistor.

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • 2SC1623 --: NPN small-signal transistor with comparable Vceo and current ratings, widely available and commonly used as a general replacement in low-power switching and amplifier circuits.
  • MMBT3904 --: Very common NPN general-purpose transistor in SOT-23, similar small-signal characteristics and current capability, easy to source and cost-effective.
  • BC817 --: NPN transistor with higher current rating and similar voltage class, suitable for switching and amplification where the original KSD1621 is used.
  • 2N3904 --: Classic through-hole NPN small-signal transistor with comparable current and voltage ratings, suitable for general switching and amplification replacement.

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