All Questions
Tagged with heatsink temperature
23
questions
6
votes
2
answers
1k
views
Is raising a hot Zener diode from the PCB (for better ventilation) a bad idea?
Whenever I rework a Zener diode which has been running too hot (i.e. failed), I like to replace it with a higher-power equivalent when possible, and (if through-hole) raise it slightly off the board ...
- 16.3k
1
vote
1
answer
1k
views
LM2596 Heat Sink
I’ve designed a DC-DC step down circuit based on the LM2596 regulator to replace a battery in a project. The circuit steps down a 12V supply to 3.9V and is used to power a module which draws 500mA, ...
- 37
8
votes
3
answers
3k
views
Effect of length on a thermocouple's accuracy
I'm a mechanical engineer working on acquiring some temperature data using thermocouples.
Q. I wanted to know the effect of wire length on a thermocouple's accuracy.
I don't have much of electrical ...
- 97
0
votes
2
answers
98
views
heat sink solution for light source around 1000°C
I'm going to use a infrared light source IR12k which can reach 975°C for my design. However, I'm not sure whether I can solder this light source with cable whose other end is soldered with power board....
- 570
0
votes
1
answer
47
views
Is it okay to leave regulators heating at higher end of range of operating range?
IC operating range -20 to 80 degrees Celsius
Regulator IC application spec 12V in, 5V 1.5A output
Is it okay to keep IC running at 70-75 degree Celsius (with heat sink) all the time, circuit will be ...
- 194
0
votes
2
answers
2k
views
How to mount TO-92 package on a heatsink?
I want to measure heatsink temperature using LM35 TO-92 package. heatsink is a flat surface of aluminum.
What is the proper way of mounting a TO-92 temperature sensor on a heatsink so that can ...
- 2,396
0
votes
1
answer
455
views
What temperature should I expect by lighting 3W-LEDs?
I have a PCB with 10 LEDs (reference : SPHWH2L3D30ED4TPK3) which will each dissipate 3 W (forward voltage of 3 V and 1 A passing through). The PCB is a circle with a diameter of 20 cm and LEDs are ...
- 659
1
vote
0
answers
45
views
Heat transfer coefficient in a Module Baseplate
Today, for example in a power IGBT module cooled by a heatsink, it has been found that the heat transfer coefficient (htc) distribution may not be uniform across the bottom surface of the module ...
- 151
0
votes
1
answer
426
views
Water-Based Heat Sink
I am trying to incorporate a TEC in a portable system. The heat from the interior of the system needs to be transfered to the exterior where it can be dissipated freely into the environment. Now, I ...
1
vote
2
answers
2k
views
I want to attach a heat sink to the inductors on my motherboard, which glue could I use? [closed]
If I wanted to attach a heat sink to the inductors on my motherboard, which glue could I use?
I have a Gigabyte A320M-S2H, this motherboard has heating problem when used with the AMD ZRyzen 7 2700X ...
- 113
0
votes
2
answers
203
views
Confusion with relating thermal resistance temperature, and electrical power and heat sinking
What is meant by the following?:
In general, a device with a thermal resistance θ equal to 100°C/W will
exhibit a temperature differential of 100°C for a power dissipation of
1 W, as measured ...
- 1,505
0
votes
2
answers
840
views
Help to calculate heat dissipation on plastic dual in line DIP package (DIP-8 opamp)
Question is about maximum chip heat dissipation (and not about efficiency or correctness of this design).
Circuit is quite simple: put in parallel 30 Dual Opamps in 8 pin DIL package (i.e 60 opamps ...
- 461
-2
votes
2
answers
317
views
What do we mean by bidirectional TEC?
I have designed a H-Bridge driving circuit for TEC where the polarity across the TEC (load) changes according to heating and cooling application. But when I am searching for TEC Module they have ...
- 45
0
votes
1
answer
73
views
Internal thermal limit of LF00 voltage regulators
Reading the datesheet of the LF00 voltage regulator series leads to a basic question to myself.
The basic facts at the beginning of the sheet telling me, there is a logic with an
INTERNAL CURRENT ...
- 111
2
votes
2
answers
2k
views
Can conformal coating help against high-temperature environments if the chips heat up as well?
I have seen many claims of conformal coating helping for protection against, amongst many other things, extreme temperature.
One such claim in here would be: Question regarding PCB coating
My ...
- 123