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TO-220

Manufacturer: SIL-PAD

Channel style heat sink with folded back fins

Partnumber Manufacturer Quantity Availability
TO-220,TO220 SIL-PAD 84000 In Stock

Description and Introduction

Channel style heat sink with folded back fins The TO-220 is a widely used through-hole semiconductor package designed for power devices like transistors, voltage regulators, and MOSFETs. Below are the factual specifications, descriptions, and features from manufacturers:

### **Manufacturer Specifications:**
1. **Package Type:** Through-hole, three-terminal (commonly).  
2. **Dimensions:**  
   - **Height:** Typically 10.0 mm (varies slightly by manufacturer).  
   - **Width:** 15.7 mm (including leads).  
   - **Lead Pitch:** 2.54 mm (standard).  
   - **Mounting Hole Diameter:** 3.5 mm (for screw attachment).  
3. **Material:**  
   - **Body:** Thermoplastic (often flame-retardant).  
   - **Leads:** Tinned copper or alloy.  
4. **Power Dissipation:** Up to 50W (depends on thermal management).  
5. **Operating Temperature Range:** Typically -55°C to +150°C.  
6. **Voltage/Current Ratings:** Varies by device (e.g., MOSFETs may support up to 100V/75A).  

### **Descriptions:**  
- The TO-220 package includes a metal tab for heat dissipation, often attached to a heatsink.  
- Used in linear regulators (e.g., LM78xx), power transistors (e.g., TIP31), and MOSFETs.  
- Designed for through-hole PCB mounting with screw-secured thermal management.  

### **Features:**  
- **Thermal Performance:** Metal tab improves heat transfer.  
- **Mechanical Stability:** Robust construction for high-power applications.  
- **Standardized Pinout:** Base (B), Collector (C), Emitter (E) for transistors; Input, Output, Ground for regulators.  
- **Compatibility:** Fits standard TO-220 heatsinks.  

Manufacturers include STMicroelectronics, ON Semiconductor, Vishay, and Texas Instruments. Exact specs may vary by device.

Application Scenarios & Design Considerations

Channel style heat sink with folded back fins

Alternative Part Number

  • 1N4007 --: TO-220 is a package type rather than a specific part number; the 1N4007 is a widely available general-purpose rectifier diode commonly used as a reference alternative when a TO-220 diode is needed.
  • 1N5408 --: A 3A general-purpose rectifier diode that is a common substitute in TO-220 diode applications and is easily sourced.
  • MUR1560 --: A 15A ultrafast rectifier often used in TO-220 packages, suitable as a higher-current alternative for TO-220 diode positions.
  • SPK10-0.006-00-104 --: Sil-Pad thermal insulator sheet in TO-220 form factor with similar thermal conductivity and dielectric strength, a direct functional substitute for TO-220 Sil-Pad insulators.
  • TP220-0.005-00-54 --: Thermal pad cut for TO-220 packages offering comparable thermal resistance and electrical isolation, suitable drop-in replacement.
  • K10-TO220 --: TO-220 thermal insulator pad with similar thickness and insulation properties, widely available alternative for Sil-Pad TO-220 applications.

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