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Shop thermal pads, heatsinks, fans and thermal paste at Communica. Local stock, branch pickup in Samrand/Pretoria/Cape Town, VAT invoicing and quotes.
Check Samrand and branch availability with VAT invoices and account quotes.
Choose thermal pads, paste or heatsinks based on W/mK and mounting needs.
Combine heatsinks, fans and pads for SBCs, power boards and LEDs.
Effective thermal management keeps processors, power converters and LED drivers within safe temperatures so they run reliably. Whether you are building a Raspberry Pi cluster, a motor driver board, or a custom power supply, choosing the right thermal management accessories reduces throttling, extends component life and helps with stable testing results. Communica stocks a broad range of components to manage heat: heatsinks, fans, thermal pads, paste, heat pipes and passive airflow accessories suitable for hobbyist and professional projects.
Stock levels and lead times matter in South Africa. Many popular maker items are available for immediate collection at our Samrand head office or at branches in Pretoria and Cape Town. Expect common thermal paste tubes and small heatsinks to be in the hundreds of ZAR range (example: 15-200 ZAR depending on size and brand) while active fans and larger extruded heatsinks can range higher. For current availability, check the full collections page or verify branch stock before you travel.
Browse related categories and brands to compare options: Shop by Category, Shop by Brand, or see all stock in the main index All Products.
| Accessory | Typical spec to check | When to use |
|---|---|---|
| Thermal paste | Thermal conductivity (W/mK), dielectric/ conductive | CPU/SoC interfaces, power ICs |
| Thermal pad | Thickness (mm), thermal conductivity | Gap filling, insulated surfaces |
| Heatsink | Material, footprint, mounting method | Passive cooling of ICs and MOSFETs |
Pro tip: for rapid prototyping use adhesive-backed heatsinks or thermal pads for convenience; for long-term projects prefer mechanical mounting and clean surfaces with isopropyl alcohol before applying thermal paste.
If you need to visit in person, check branch hours and locations before travelling: Branches & Trading Hours. For an overview of the company and logistics, see our About page: About Communica.
When selecting thermal accessories, match thermal resistance and mounting method to your application. Use Ohm’s-law style thinking for heat: a simplified analogy is Thermal Resistance (°C/W) instead of electrical resistance. Lower thermal resistance means better heat transfer. For calculations:
Temperature rise estimate: DeltaT (°C) = Power dissipation (W) × Thermal Resistance (°C/W).
Example: a power MOSFET dissipating 2 W attached to a heatsink with 15 °C/W thermal resistance gives DeltaT = 2 × 15 = 30 °C above ambient. If ambient is 25 °C, junction temperature will be higher depending on package thermal path. This provides an estimate for whether an active fan or larger heatsink is required.
Communica supports VAT invoicing and account quotes for procurement teams; request a quote when buying higher-volume accessory bundles. For fast pickup, check stock at Samrand or alternate branches. Typical availability: common pastes and small heatsinks are usually in local stock; specialised heat pipes or branded cooling fans may have lead times-use the products index to confirm stock levels.
Want to compare options or place an order? Use site navigation to shop by category, or review brand-specific ranges at Shop by Brand. For quick verification of available items, check All Products and then Compare Specs.
You can Shop Now online for immediate dispatch, Check Stock in Samrand before driving in, or Request a Quote for larger projects or educational procurement. Communica offers convenient branch pickup and issue VAT invoices on request for institutional purchases.
For branch details and opening times, see Branches & Trading Hours. To learn more about Communica and our history serving South African makers, visit About Communica.
Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.
Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.
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