Silicone Thermal Pad for TO-220 Package — Insulating, 10-Pack

Silicone Thermal Pad for TO-220 Package — Insulating, 10-Pack

Silicone thermal insulating pads for TO-220 package components — pack of 10. These pads are placed between a TO-220 component (MOSFET, transistor, voltage regulator) and a metal heatsink to provide thermal conductivity while maintaining electrical insulation. Without insulation, the metal tab of a TO-220 package is electrically connected to one of its pins — mounting directly to a grounded heatsink would cause a short circuit. These pads solve that problem.

Key Specifications

• Package: TO-220 (pre-cut to fit)
• Material: Silicone (electrically insulating, thermally conductive)
• Thermal conductivity: ~1.0–1.5 W/m·K
• Dielectric strength: >4kV
• Temperature range: -40°C to +200°C
• Pack: 10 pads
• Compliance: RoHS compliant

Why Insulating Thermal Pads?

• ✅ Electrical insulation — prevents short circuit between TO-220 tab and heatsink
• ✅ Thermal conductivity — transfers heat from component to heatsink efficiently
• ✅ Pre-cut for TO-220 — correct size, no cutting required
• ✅ Reusable — silicone pads can be removed and reused
• ✅ 10-pack value — enough for 10 component installations

Installation

Place pad between TO-220 tab and heatsink. Use an insulating bushing on the mounting screw hole as well. Apply light clamping pressure with M3 screw and nut.

Typical Applications

• MOSFET (IRF540, IRFZ44N) heatsink mounting
• Voltage regulator (LM7805, LM317) heatsink mounting
• Power transistor (TIP31, TIP120) heatsink mounting
• Motor driver IC heatsink mounting
• Linear power supply regulator thermal management

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Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

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