U.S. Seller - P Package 3-Lead TO-3P (Similar to TO-247) Silicone Insulator Insulation Sheet 25 mm (0.984252 inch) x 20 mm (0.7874016 inch) thermal insulation
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Pad size : 25mm (0.984252 inch) x 20mm (0.7874016 inch)
Package include:
12/24/50/100 TO-3P/TO-247 Silicone pads
Please review pictures and let me know if any questions.