All Questions
Tagged with heatsink transistors
18
questions
5
votes
2
answers
259
views
If I attach the heat sink on the transistor, will switching power loss be lower?
If I attach the heat sink on the transistor, will PWM switching power loss of transistor be lower?
- 163
0
votes
2
answers
165
views
Does the direction of the screw for heatsink mounting matter?
I am currently design a high power system transistors in TO220 package.
I am planning to mount those transistors on a metal box that will act as a dissipator/heatsink for the transistors. The walls of ...
- 103
1
vote
1
answer
340
views
Mica Insulator for TO-220 Grounded Heat Sink
If I have a three terminal TO-220 voltage regulator where the center terminal and heat sink are connected ground terminals, is there any reason not to mount the heat sink directly to an aluminum ...
3
votes
1
answer
114
views
Thermal circuit for shared heatsink
I am following this video from EEV blog where he talks about calculating heatsinks and I noticed that he does not talk about multiple components sharing a single heatsink. I have lurked around the ...
- 543
-4
votes
2
answers
1k
views
Can I use those TO-220 heatsinks with a TO-126 package?
The TO-126 component is this : https://pdf.direnc.net/upload/bd679-datasheet.pdf
Dimensions for heatsink : 19.7 mm - 14.8mm - 9.7mm
I wonder can I mount this TO-220 heatsinks to BD679 or not. The ...
- 2,106
1
vote
1
answer
444
views
Will 5W power on TIP41C/TIP42C require a heat sink?
I do guess it will require but I have never used a heat sink before, so I am not sure.
- 2,106
0
votes
1
answer
86
views
Transistor Inverter - when does excessive small wattage become a problem?
I'm trying to choose the best values of resistors given the stock I have so that I can deliver sufficient power and current to an HM-TRP radio module.
In this circuit, I used the 100K resistor ...
2
votes
2
answers
336
views
install heatsink on BJT
I am facing the problem with the heat of transistor disturb sensor reading. Here the link refer problem
I am using BC548 transistor. It is a bit hot when operating because it disipates power around ...
- 61
1
vote
2
answers
2k
views
Transistor Power Dissipation / Overheating
I am working on an audio project in which a voltage controlled square wave oscillator drives a 5W 4Ohm Speaker. I am using a unipolar 12V supply. In order to limit the current going through the ...
- 151
0
votes
3
answers
2k
views
Transistor heating up problem
I have an LM317AHVT power supply with PNP pass transistor.
I noticed that the power transistor is heating up to about 64C after a few minutes. I am using an 130x80x30mm heatsink and an 92mm fan to ...
- 343
0
votes
1
answer
223
views
Thermal design for an IGBT
I am working on a project that involes an inverter made with IGBTs. The device I selected for builing the H bridge is this: STGW60H65DFB. One of my roles in this project is also to select a suitable ...
- 152
2
votes
2
answers
1k
views
Does bolting to aluminum for electrical contact have any oxidation concerns?
If I bolt a transistor to aluminum for an electrical and thermal connection, are there any oxidation concerns for the electrical contact?
- 286
0
votes
1
answer
83
views
Heatsinking a TO 220 Case
There are modules that I have purchased that are already built on a PCB, and I would like to integrate them into my board. There is a TO-220 case which is a transistor on the bottom side, and it is ...
- 31
6
votes
2
answers
723
views
MOSFET Circuit Design and Thermal Considerations
I'm a newbie at EE, and just I wanted to verify that the design I came up with for a MOSFET circuit that drives a 12V 500mA water pump will work. I'd also like to confirm I can run the N-Channel ...
- 325
1
vote
2
answers
587
views
Could I use a heatsink to interconnect transistors mounting base?
I'm designing a CMOS H-bridge single sided board. To keep it small as possible, I would like to not connect the transistor's drain by trace. In spite off, as they are connected to the mounting base ...
- 759