page_title: TO-66
hierarchical_section_title: TO-66
caption_attribution_description: English: GD241 PNP transistor in a TO-66 package.
context_page_description: TO-66 is a type of semiconductor package for devices with three pins, such as transistors. The shape is similar to the TO-3 package, but the size is smaller. The TO-66 package is made entirely of metal and is commonly used by silicon controlled rectifiers and power transistors.
context_section_description: TO-66 is a type of semiconductor package for devices with three pins, such as transistors. The shape is similar to the TO-3 package, but the size is smaller. The TO-66 package is made entirely of metal and is commonly used by silicon controlled rectifiers and power transistors.
caption: GD241 PNP transistor in a TO-66 package.
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