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TO-220 Clip-On Heatsink : ID 977 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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File:Sectionalized transistor besides an ordinary paper clip – Bell Telephone Magazine (Spring 1950, p. 22) (14568400179).jpg - Wikimedia Commons
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Fischer Elektronik Transistor bracket (10 slots) THFM 10 Suitable for: TO 218, TO 220, TO 247, TO 264, SOT 32 Heat sink | Conrad.com
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Power Supply Hard Batten Clip Custom Mos Tube Clamp To264 Transistor Ic Mound Layer Power Nickel Plating Ic Chip Clip - Demo Board Accessories - AliExpress
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