Shopping Cart

Product Description (Detailed):

The ubiquitous 7805 voltage regulator IC, a cornerstone in countless electronic circuits, reliably provides a stable +5V output from a higher, unregulated DC input. However, its linear regulation principle inherently leads to power dissipation as heat, particularly when the input-output voltage differential is significant or the load current is high. This excess energy, converted to thermal energy, necessitates effective heat dissipation for the 7805 IC to ensure stable operation and prevent premature failure. Without proper 7805 thermal management, the internal thermal shutdown protection circuit will activate, temporarily ceasing regulation and leading to unreliable circuit performance.

To mitigate this, a 7805 voltage regulator heatsink is crucial. Typically, the 7805 comes in a TO-220 package, designed for robust power applications and facilitating the attachment of a heatsink. The heatsink acts as an extended surface area, transferring the heat generated by the IC to the surrounding ambient air through convection and radiation. When selecting an LM7805 heatsink, factors like its thermal resistance (RθJA​ or RθJC​), material (e.g., aluminum alloy for its excellent thermal conductivity), and physical dimensions are critical. The power dissipated by the 7805 can be approximated by PD​=(Vin​−Vout​)×Iload​. For instance, a 12V input supplying a 500mA load would dissipate $(12V-5V)\times 0.5A=3.5W$. This substantial wattage demands an adequately sized heatsink to keep the junction temperature (TJ​) of the IC below its maximum operating limit, typically 125∘C. Incorporating a heatsink ensures the 7805 can deliver its rated current (up to 1.5A for the standard TO-220 variant) without thermal throttling, safeguarding your circuit's longevity and performance.

The 7805 Heat Sink is a high-quality aluminum heat dissipation component designed specifically for TO-220 package voltage regulators such as 7805, 7812, LM317, and similar ICs. It helps keep the IC temperature within safe operating limits by dissipating excess heat generated during voltage regulation.

This heat sink is perfect for DC power supply designs, battery charging circuits, and microcontroller-based systems, where the voltage regulator might experience high current loads and needs thermal protection.

Key Features:

• Designed for TO-220 package ICs like 7805, 7812, LM317

• Helps reduce IC temperature and prevent thermal shutdown

• Ideal for power supply circuits and linear voltage regulators

• Durable black anodized aluminum for better heat dissipation

• Compact and lightweight for PCB mounting or prototyping

Technical Specifications:

How to Use:

1. Align the TO-220 IC (e.g., 7805) with the heat sink's mounting hole.

2. Secure with a metal screw and insulating washer (if required).

3. Ensure tight contact for optimal heat conduction.

4. Mount the assembly onto your PCB or enclosure.

Optional: Use thermal paste or compound between the IC and heat sink for improved performance.

Applications:

• DC power supply circuits

• Arduino or embedded projects

• Battery chargers and LED drivers

• DIY kits and robotics controllers

• Anywhere a 7805 voltage regulator is used under load

Package Includes:

• 1 × 7805 Heat Sink (Black Aluminum, TO-220 compatible)