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KSB1121-STF from SAMSUNG

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KSB1121-STF

Manufacturer: SAMSUNG, FAIRCHILD

PNP Epitaxial Planar Silicon Transistor
Partnumber Manufacturer Quantity Availability
KSB1121-STF,KSB1121STF SAMSUNG, FAIRCHILD 50000 In Stock

Description and Introduction

PNP Epitaxial Planar Silicon Transistor **Part Number:** KSB1121-STF  
**Manufacturer:** FAIRCHILD  

### **Specifications:**  
- **Type:** NPN Bipolar Junction Transistor (BJT)  
- **Package:** SOT-23 (Surface Mount)  
- **Collector-Base Voltage (VCBO):** 40V  
- **Collector-Emitter Voltage (VCEO):** 40V  
- **Emitter-Base Voltage (VEBO):** 5V  
- **Collector Current (IC):** 600mA  
- **Power Dissipation (PD):** 350mW  
- **DC Current Gain (hFE):** 100-300 (at IC = 10mA, VCE = 1V)  
- **Transition Frequency (fT):** 250MHz  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions and Features:**  
- Designed for general-purpose amplification and switching applications.  
- High current gain and low saturation voltage.  
- Suitable for high-speed switching due to its transition frequency (fT).  
- Compact SOT-23 package for space-constrained applications.  
- RoHS compliant.  

(Note: Always verify datasheet details for exact application-specific parameters.)

Application Scenarios & Design Considerations

PNP Epitaxial Planar Silicon Transistor

Alternative Part Number

  • 2SA1020-Y --: PNP transistor with similar voltage and current ratings, commonly used as a general-purpose replacement in low-frequency amplifier and switching circuits.
  • MPSA92 --: High-voltage PNP transistor suitable for many circuits where the original PNP device was used, with widely available TO-92 package.
  • BC557 --: General-purpose PNP transistor with broad availability, suitable for low-power switching and amplification applications as a functional substitute.
  • 2SA1020 --: PNP transistor with comparable voltage and current ratings, commonly used as a substitute for general-purpose PNP switching applications.
  • BC640 --: PNP transistor in TO-92 package with similar current gain and voltage ratings, suitable for low-power switching and amplification.

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