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KSD261 from FAIRCHIL,Fairchild Semiconductor

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KSD261

Manufacturer: FAIRCHIL, FAIRCHILD

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSD261 FAIRCHIL, FAIRCHILD 20000 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The KSD261 is a thermal protector manufactured by FAIRCHILD. Below are the specifications, descriptions, and features based on available factual information:  

### **Specifications:**  
- **Type:** Thermal protector / Thermal cutoff switch  
- **Operating Temperature Range:** Typically rated for temperatures up to **150°C** (exact range may vary by model).  
- **Contact Type:** Normally closed (NC) or normally open (NO) configurations available.  
- **Rated Voltage:** Commonly rated for **250V AC**.  
- **Current Rating:** Typically **10A** (may vary depending on model).  
- **Terminal Type:** Quick-connect or solder terminals.  
- **Housing Material:** Flame-retardant plastic.  

### **Descriptions:**  
- The KSD261 is a bimetallic thermal switch designed to automatically open or close an electrical circuit in response to temperature changes.  
- It is commonly used in appliances like electric kettles, rice cookers, and other heating devices for overheat protection.  
- The switch resets automatically when the temperature drops below the set threshold (for auto-reset models).  

### **Features:**  
- **Bimetallic Disc Actuation:** Ensures reliable switching based on temperature changes.  
- **Compact Design:** Suitable for space-constrained applications.  
- **High Current Capacity:** Capable of handling moderate to high current loads.  
- **Fast Response:** Quickly reacts to temperature fluctuations for safety.  
- **Durable Construction:** Flame-resistant materials enhance safety in high-temperature environments.  

For exact specifications, always refer to the manufacturer's datasheet or product documentation.

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • 2N3904 --: General-purpose NPN transistor in TO-92, widely available and a common substitute for small-signal switching applications.
  • BC547 --: Low-noise NPN transistor with similar current and voltage ratings, suitable for general amplification and switching.
  • 2N2222A --: Robust NPN transistor with higher current capability, often used as a drop-in replacement in switching circuits.
  • 2SC1815 --: Popular NPN audio/small-signal transistor with similar low-power switching performance and TO-92 package compatibility.

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