A compact heat exchange device suitable for cooling electronic components, comprising: - an outer first plate, bearing a first inlet door for a cooling fluid and a first outlet door for such fluid downwards the thermal exchange; - a second outer plate, fixed with said first plate and bearing a second inlet door for a fluid to be cooled down and a second outlet door for such fluid downwards the thermal exchange; and - one or a plurality of intermediate plates interposed between said first and second outer plates and fixed with the latter, such intermediate plate(s) being arranged parallelly one with respect to the other one and/or to said first and second outer plate, wherein said or each intermediate plate bears a first thermal exchange surface and a second thermal exchange surface arranged on opposite sides of the plate, the whole configuration being such that each one of said first and second thermal exchange surface faces a corresponding surface of said first or second outer plate or another adjacent intermediate plate, wherein each one of said first and second thermal exchange surface is equipped with respective first or second exchange members, in particular fins, suitable to increase the area of thermal exchange with the cooling fluid or with the fluid to be cooled down, wherein the overall configuration is such that said first and second exchange members, together with said corresponding surface facing them of said first or second outer plate or of an additional intermediate plate, define flow channels (101, 102) for the cooling fluid flowing, in use, from said inlet door to said outlet door or for the fluid to be cooled down flowing, in use, from said second inlet door to said second outlet door, said thermal exchange device being suitable to be made fixed with, or in communication of fluid to be cooled down to, an electronic component, preferably at said second plate, characterised in that said first plate bears fluid-distributing means (16, 161) for the cooling fluid, which distributing means comprises a projecting distributing septum and/or a tapered distributing surface. - an outer first plate, bearing a first inlet door for a cooling fluid and a first outlet door for such fluid downwards the thermal exchange; - a second outer plate, fixed with said first plate and bearing a second inlet door for a fluid to be cooled down and a second outlet door for such fluid downwards the thermal exchange; and - one or a plurality of intermediate plates interposed between said first and second outer plates and fixed with the latter, such intermediate plate(s) being arranged parallelly one with respect to the other one and/or to said first and second outer plate, wherein said or each intermediate plate bears a first thermal exchange surface and a second thermal exchange surface arranged on opposite sides of the plate, the whole configuration being such that each one of said first and second thermal exchange surface faces a corresponding surface of said first or second outer plate or another adjacent intermediate plate, wherein each one of said first and second thermal exchange surface is equipped with respective first or second exchange members, in particular fins, suitable to increase the area of thermal exchange with the cooling fluid or with the fluid to be cooled down,