Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1991-02-28
1992-11-17
Picard, Leo P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361387, 361389, 361397, 361400, 165803, 165185, 174 163, 174 522, 357 80, 357 81, H05K 720
Patent
active
051648849
ABSTRACT:
The invention relates to a cooling construction for cooling a power transistor (4) having a plastic encapsulation, wherein the waste heat produced is conducted away mainly via the collector lead (6), the collector lead being connected to the collector strip (3) on the circuit board. When it is desired to conduct the produced waste heat specifically on the component side of the circuit board (1), it is possible to use a construction according to the invention in which there is placed on the circuit board (1) a highly heat conductive insulation plate (8) which covers the collector strip (3) entirely over part of its length next to the transistor (4), and that to the insulation plate (8) there is fixed a cooling plate (9) to which the thermal energy produced in the transistor is conducted. The insulation plate (8) may in part also extend on top of the plastic encapsulation of the transistor.
REFERENCES:
patent: 3517272 (1970-06-01), Lee et al.
patent: 3859570 (1975-01-01), Veranth et al.
patent: 4935581 (1990-06-01), Komathu
patent: 5021925 (1991-06-01), Soboleski
Mandel et al., Heat Dissipator Assemblies, Mar. 1966, IBM Technical Disclosure Bulletin, vol. 8, No. 10.
Harry Swanson, Mounting Techniques for Powermacro Transistor, Motorola RF Device Data, 6-190-6-192.
Nokia Mobile Phones Ltd.
Picard Leo P.
Whang Young S.
LandOfFree
Device for cooling a power transistor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for cooling a power transistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for cooling a power transistor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1176619