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Request a tailored quote for heatsinks, fans, thermal pads and cooling systems. Local stock, VAT invoices, Samrand pickup and expert spec guidance.
Get VAT invoices, lead times and branch pickup options for bespoke cooling solutions.
We provide Rth calculations, fan power checks and compatibility advice for projects.
Browse collections and brands with Samrand collection or nationwide delivery.
Selecting the right electronics cooling system is about matching thermal performance, size, noise, and cost to your application. Whether you’re a maker cooling a Raspberry Pi cluster, a university lab prototyping power converters, or a procurement team specifying enclosures for production, Communica supplies heatsinks, axial and blow fans, fan controllers, heat pipes, thermal pads, and compound pastes from brands commonly used in South Africa.
We offer quote services for single components through to full system packages. Quotes include VAT invoices, lead-time estimates, and branch collection options from our Samrand head office or other branches. For an immediate view of categories we stock, visit our Collections (Shop by Category) page or browse all products on the All Products index.
| Type | Typical power range | Noise | Use case |
|---|---|---|---|
| Small passive heatsink | <5 W | Silent | Single IC, sensor boards |
| Axial fan (40-120 mm) | 5-50 W | 25-40 dBA | Enclosure ventilation, PCBs |
| Heat pipe / vapor chamber | 20-200 W | Varies | High-power, compact systems |
For brand-specific options, consult our Shop by Brand list to see commonly stocked manufacturers and maker-favourite items.
A thorough quote combines component cost, estimated shipping or branch collection details, and any recommended accessories (mounting hardware, thermal pads, fan grills). Provide your thermal load and mechanical constraints; our technical team can propose options and estimated ZAR pricing ranges for quantities.
Basic thermal calculation: required thermal resistance (Rth) to keep a component below a maximum temperature. Formula: Rth_required = (T_junction_max - T_ambient) / P_dissipation Where temperatures are in °C and power P in W. For instance, to keep a 10 W regulator 40°C above a 25°C ambient: Rth_required = 40 / 10 = 4 °C/W.
Ohm’s law & fan power: P = V x I. A 12 V fan drawing 0.12 A consumes 1.44 W. Include fan power when estimating enclosure thermal load.
Common bundles we quote together: heatsink + mounting kit + thermal pad for DIY projects; fan + PWM controller + grille for noisy environments; heat pipe assembly + thermal adhesive for compact enclosures. For a curated parts search, view relevant categories under Collections (Shop by Category) and add items to a request for an official quote.
To request a personalised quote, prepare your component list, quantities, mechanical constraints, and preferred delivery or collection branch. You can start from the Communica homepage or send a detailed parts list from the All Products index to receive a formal quote with VAT-inclusive pricing and lead-time estimates. Common CTAs you can follow on the site include Shop Now, Check Stock in Samrand, and Request a Quote.
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.
Get answers to common questions about Power And Thermal Management
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