Which aspect is NOT part of the IED components?

The main charge is one of the key components of an improvised explosive device (IED), as it contains the explosive material that generates the blast. The power source, which provides the energy needed to initiate the detonator or activate the device, is another critical component. The switch, which acts as the mechanism to trigger the device, is also essential in the overall operation of an IED.

However, the detonator is indeed a fundamental part of IEDs. It is responsible for initiating the explosion, often acting as a bridge between the switch and the main charge. Therefore, the correct response must highlight that the detonator is an integral component, unlike the option identified, which does not accurately represent one of the main components of an IED. Thus, when determining which aspect is not part of the IED components, the correct focus should exclude the detonator from the list of critical parts, as it is essential for the device's functionality.