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Find heatsinks, fans, thermal pastes and packaged cooling solutions available at Communica Samrand. Check stock, request quotes and collect locally.
Immediate pickup options and typical lead times for popular cooling parts.
Use thermal resistance and airflow metrics to size heatsinks and fans correctly.
Combine fans, heatsinks and TIMs with mounts and filters for ready-to-fit solutions.
Managing heat is essential for reliable electronics - from prototype PCBs to motor drivers and power supplies. If you need fast local access to cooling hardware in Samrand, Communica stocks a broad range of options including aluminium heatsinks, axial and blower fans, thermal pads and pastes, heat pipes, and active cooled enclosures. This page summarises common options, when to use them, and how to check local availability at our Samrand head office/warehouse.
When selecting parts, compare thermal resistance (°C/W), airflow (CFM or m3/h), fan speed (RPM), noise (dBA), rated voltage/current, and mechanical mounting. For packaged solutions note board cutouts and connector compatibility. Below is a concise spec table to compare typical parts.
| Component | Typical spec | When to choose |
|---|---|---|
| Small aluminium heatsink | Thermal resistance 5-20 °C/W | Low-power ICs, MOSFETs |
| 40-120 mm axial fan | Airflow 5-70 CFM, 12V typical | PCBs, enclosures with intake/exhaust |
| Thermal pad/paste | Conductivity 1-10 W/mK | Fill gaps, improve contact |
For makers and procurement teams who need immediate pickup, check Samrand inventory and branch hours before travelling. See branch details and trading hours for Samrand and other locations on our branches page: Branches & Trading Hours. If you prefer to browse categories, our collections index lists heatsinks, fans, adhesives and more: Shop by Category.
Pro tip: for student projects allow 1-2 working days for less-common parts; popular fans and TIMs are often available same-day at Samrand.
Look for pre-drilled heatsinks and matched fan sizes (e.g., 40mm fan with 40x40mm mount). Communica stocks accessory bundles such as fan grills, rubber anti-vibration mounts, and temperature sensors useful for closed-loop cooling. For brand choices and broader product search see our brands page: Shop by Brand.
Start with a thermal budget: estimate power dissipation (P) in watts for the hottest component, then choose a solution with thermal resistance (Rth) giving an acceptable temperature rise. Use the basic relation:
T_rise (°C) = P (W) × Rth (°C/W)
Example: a motor driver dissipating 5 W paired with a heatsink of 6 °C/W yields a 30 °C rise. If ambient in a workshop is 30 °C, the component could reach ~60 °C - often acceptable for power semiconductors but check component datasheets for limits.
For fan-powered cooling use PWM speed control for quiet operation. Typical wiring for a 3-pin fan is:
+12V ---o o--- Fan V+ (red) GND ---o o--- Fan GND (black) PWM (optional) ---o--- Fan tach/pwm (yellow)
For 4-pin PWM fans, connect the PWM pin to a microcontroller or fan controller with appropriate logic level (often 5V). Always confirm rated voltage and inrush current to avoid overloading regulators; for example, multiple 40 mm fans at 12V may draw 0.1-0.3 A each.
Communica supports account quotes and VAT invoices for education and procurement teams. For fast pickup, check stock at the Samrand warehouse via our homepage: Communica Homepage, then use "Check Stock in Samrand" or request a bundle quote for fans, heatsinks and TIMs. Example bundle pricing is often quoted in ZAR; contact the Samrand branch for current estimates and lead times.
Match mounting hole patterns and voltages; pair thermal pads (1-2 mm thickness) to uneven surfaces and paste for flat, serviceable CPU-like interfaces. Common accessory packs include thermal paste (1-5 g), fan grills, screws and rubber mounts - useful for lab benches and education kits.
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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